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127
met. Halevedhængene meget smaa, enleddede. Farven
graahvid. Længden 4.20""".
Findested. Ståt. 248.
Bemærkninger. Fra den typiske Art er denne let
kjendelig ved de overalt piggede Integumenter, de mindre
stærkt forlængede 2det Par Folere og den rudimentære
Beskaffenhed af Halevedhængene; endelig derved, at ikke blot
lste. men ogsaa 3die Forkropssegment til liver Side gaar
ud i spidse Torner.
Beskrivelse af Hunnen. Legemet er (se Pl. XI.
Fig. 26) af den for Slægten eharaeteristiske spinkle og
langstrakte Fonn, med den storste Brede neppe overskridende
1 5 af Længden og Midtpartiet særdeles smalt og ligesom
udtrukket.
Integumenterne er temmelig faste og overalt ru af
meget smaa tiltrykte Pigger.
Hovedet er forholdsvis lidet, næsten cirkelforniigt og
ved Basis delvis omfattet af lste Forkropssegment, med
Panderanden jevnt buet.
D>’ 3 förste Forkropssegmenter er omtrent indbyrdes
af ens Storrelse og over dobbelt saa lirede som lange. De
forreste Sidehjørner af lste og 3die er utrukne til lange
skraat fortilrettede dolkformige Fortsatser, hvoraf navnlig
de paa lste Segment er af betydelig Længde.
De 2 følgende Forkropssegmenter viser en meget
eiendommelig Form, idet de tilsammen danner et stærkt
forlænget, paa Midten smalt cylindriskt, eller næsten
timeglas-formigt Kropsafsnit, indtagende omtrent Halvparten af
Total-længden. Begge Segmenter er meget fast, og som det synes
ubevægeligt forbundne med hinanden, men dog tydeligt
begrændsede ved en lige Tværsutur, som bemærkes foran
Midten af nævnte Afsnit.
De 2 sidste Forkropssegmenter er meget smaa, med
jevnt afrundede Sidedele og den bagre Band noget
conca-veret.
Bagkropsseginentet er forholdsvis lidet, kun indtagende
1/7 af Totallængden. Af Fonn er det ovalt, noget indknebet
ved Basis, og med Enden stumpt tilspidset.
Af Øine lindes intetsomhelst Spor.
lste Par Følere (Fig. 27) er omtrent saa lange som
Hovedet og de 2 første Forkropssegmenter tilsammen. Skaftets
lste Led er meget kort. skjælformigt, med en noget takket
Band. 2det Led er stærkt lorlænget og smalt, i den indre
Kant forsynet med stærke Børster. 3die Led er forholdsvis
lidet og synes mere at slutte sig til Svoben end Skaftet;
det følges af 3 korte Led, der forestiller den egentlige
Svøbe.
2det Par Folere (se Fig. 26) er betydelig stærkere
udviklede, skjøndt neppe opnaaende Legemets Længde.
Skattets 5 Led er alle sinale og simpelt cylindriske. Svøben er
powerful in structure than in the typical species, with 4th
joint but very little swollen. Caudal appendages
exceedingly minute, uni-articulate. Colour greyish-white. Length
4.20"’".
Locality. — Ståt. 248.
Remarks. — From the typical species, this form is
easily distinguished by the rough surface of the integuments,
the less produced 2nd pair of antennæ, and the
rudimentary character of the caudal appendages; finally, not only
by the 1st, but also the 3rd, segment projecting on either
side as an acute spine.
Description of the Female. — The body (Pl. XI,
fig. 261 has the slender and elongate form peculiar to the
genus, with the greatest breadth scarcely exceeding
one-fifth of the length, the medial part remarkably narrow and,
as it were, drawn out.
The integuments are rather compact, and everywhere
rough, from minute appressed spines, or spicules.
The head is comparatively small, almost circular in
shape, and at the base partly encompassed by the 1st free
segment, with the frontal margin uniformly arched.
The 3 first segments are well-nigh uniform in size,
and more than twice as broad as long. The anterior
lateral corners of the 1st and 3rd jut out as long, oblique,
anteriorly directed, dagger-shaped projections, those on the
lst segment in particular being of very considerable size.
The 2 succeeding segments exhibit a very peculiar
form, constituting together an exceedingly elongate and, in
the middle, narrow-cylindric, or almost hourglass-shaped
section of the body, that measures about one-half of the
total length. The two segments are very firmly, and, it
would seem, immovably connected with each other, though
distinctly defined by a straight, transverse suture, occurring
somewhat anterior to the middle of the aforesaid section.
The 2 last segments belonging to the anterior division
are very small, with uniformly rounded lateral parts and
the posterior margin somewhat concave.
The abdominal segment is comparatively small,
measuring not more than one-seventh of the total length. In
form, it is oval, somewhat constricted at the base, and with
the extremity obtusely pointed.
Of eyes no trace whatever could be detected.
The 1st pair of antennæ (fig. 27) are about as long
as the head and the 2 first segments taken together. The
lst joint of the peduncle is extremely short, squamiform,
with a somewhat jagged margin. The 2nd joint is greatly
produced, and slender, as also, along the inner margin,
furnished with 4 strong bristles. The 3rd joint is
comparatively small, and would appear rather as belonging to
the tlagelluni than to the peduncle; it is succeeded by 3
short articulations, representing the true fiagelluiii.
The 2nd pair of antennæ (fig. 26) is much stronger
in development, though scarcely attaining the length of the
body. The 5 joints of the peduucle are all slender and
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