Full resolution (JPEG) - On this page / på denna sida - Sidor ...
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
1:24
hvoraf do 2 yderste foruden de sædvanlige Haarbørster er
forsynede med nogle laa (3) Sandsevedhæng at den
sædvanlige smale, lineære Fonn. Hos N. oblongus
repræsenteres derimod hele Svøben af et enkelt enormt udviklet
kølleformigt Sandsevedhæng.
2det Par Følere (Fig. 33) er omtrent dobbelt saa
lange som lste Par og ialmindelighed vinkelformigt bøiede,
med Endepartiet bagudrettet. Af Skaftets 5 Led udmærker
det 2det sig derved, at det paa den ydre Side gaar ud i
et stærkt, udadrettet, tornformigt Fremspring. lsteog3die
Led er ganske korte, hvorimod de 2 sidste er mere
forlængede. Svøben er traadformig, noget kortere end Skaftet
og sammensat af 13 med simple Borster besatte Led.
Overlæben (Fig. 34) danner en liden afrundet,
ligesom af 2 Segmenter bestaaende Lap, der er bevægeligt
forbundet med Epistomet.
Underlæben (Fig. 35) har 2 ganske korte, i sin indre
Kant eilierede Endelapper.
Kindbakkerne iFig. 36) viser den for Familien
sædvanlige Bygning. Det forreste tandede Parti har tæt bag
Spidsen en Gruppe af stive Borster og er ved et dybt
vinkelformigt Indsnit skilt fra Tyggeknuden; denne bar
Formen af en cylindrisk, næsten under en ret Vinkel fra
Corpus udgaaende Fortsats, der i Enden er noget skraat
afkuttet og her forsynet med den sædvanlige riflede
Skulptur. Palpen er vel udviklet, omtrent af selve Kindbakkens
Længde og bestaaende af 3 tydelige Led, hvoraf det
midterste er længst. Endeleddet er stærkt krummet og langs
sin indre Kant forsynet med en Rad af eilierede Torner.
Ved Enden af 2det Led sees en Gruppe lignende Torner
eller Borster; forovrigt er Palpen ganske nogen.
lste Par Kjæver (Fig. 37) er af sædvanligt Udseende.
Den indre Tyggelap er ganske smal og noget bugtet; de
paa samme fæstede Børster’meget smaa.
2dct Par Kjæver I Fig. 38) har de 2 ydre
fingerfor-mige Fortsatser meget sinale og ved Spidsen forsynede med
3 tynde Borster.
Kjævefødderne (Fig. 39) udmærker sig i høi Grad ved
den usædvanlige Udvikling af Tyggelappen. der er betydelig
større end selve Basaldelen og af aflang 4-sidet Form, med
det indre Hjørne udtrukket til et skarpt tandformigt
Fremspring. Derimod er Palpen ualmindelig sinai og simpelt
cylindrisk, forøvrigt sammensat af det normale Antal Led.
Af disse er det 2det længst og ligesom de følgende ved
Spidsen forsynet med nogle faa simple Borster. Den
plade-formige Epignath er stærkt udviklet, af uregelmæssig
tresidet Form og rækker med sin stumpe Spids omtrent til
Enden af Palpens 3die Led.
of the peduncle taken together, and consisting of 4 distinctly
defined joints, of which file 2 outermost, apart from the
usual auditory bristles, are furnished with a few (3) sensory
appendices, of the normal slender, linear form. In AT.
ob-langus, on the other hand, the whole flagellum is represented
by a single, prodigiously developed, cucubiter-shaped sensory
appendix.
The 2nd pair of antennæ (fig. 33) are about twice
as long as the 1st pair, and, as a rule, angularly bent,
with the terminal part directed backward. Of the 5 joints
of the peduncle, the 2nd is distinguished by its jutting forth
on the outer side as a strong, outward-directed, spiniform
projection. The ] st and 3rd joints are quite short, whereas
the 2 last occur more produced. The flagelluhi is
filiform, somewhat shorter than the peduncle, and composed
of 13 articulations, beset with simple bristles.
The labruin (fig. 34) forms a small rounded lobe,
consisting, as it were, of 2 segments, and movably
connected with the epistome.
The labium (fig. 85) has 2 very short terminal lobes,
ciliated along the inner margin.
The mandibles (fig. 36) exhibit the structure
characteristic of the family. The anterior dentate part has in
immediate proximity to the point a group of stiff bristles,
and is, by a deep angular incision, cut off from the molar
protuberance; the latter presents the form of a cylindric
projection, jutting forth almost at right angles with the
corpus, the said projection being somewhat obliquely truncate
at the extremity and furnished there with the usual fluted
sculpturing. The palp is well developed, about equal in
length to the mandible itself, and composed of 3 distinct
articulations, of which the middle one is longest. The
terminal articulation very considerably curved, and furnished,
along its inner margin, with a series of ciliated spines. At
the extremity of the 2nd articulation occurs a group of
similar spines or bristles; for the rest, the pal]) is entirely
naked.
The 1st pair of maxillæ (fig. 37) has the usual
appearance. The inner masticatory lobe is quite slender, and
somewhat sinuous; the bristles attached to the lobe are
exceedingly small.
The 2nd pair of maxillæ (fig. 38) have the 2 outer
dactyliform projections exceedingly slender, and furnished
at the point with 3 delicate bristles.
The maxillipeds (fig. 39) are very prominently
characterized by the unusual development of the masticatory
lobe, which is considerably larger than the basal part
itself, and of an oblong, quadrilateral form, with the inner
corner drawn out to a sharp, dentiform projection. The
palp, on the other hand, is remarkably slender and
siinple-cylindric, but has, for the rest, the normal number of
articulations. The longest of these is the 2nd, which, like
the succeeding, is furnished at the point with a few simple
bristles. The lamelliform epignath is very fully developed,
of an irregular-triangled form, and reaching with its obtuse
point about to the extremity of the 3rd articulation of the
palp.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
