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.
bare at the latter part. The inner lobe of the third joint is rather small (fig. 23) and has two
or three rather powerful distal bristles of moderate and somewhat different lengths, the lengths
varying to some extent; these bristles have either short hairs or else rather coarse secondary
spines. In addition this lobe has proximally on the posterior side a fairly long bristle, with
short hairs distally and usually with long hairs at the middle. The outer lobe of this joint has
two moderately long distal bristles, usually subequal, with long hairs at the middle and short
hairs distally, but sometimes, however, the inner one, sometimes the outer one has only short
hairs. The end joint, which is fairly large and without any signs of any further division into
joints, has five or six, usually six, moderately long and rather powerful distal bristles; their
relative lengths vary to some extent. Pilosity: The two last-mentioned joints are rather
sparsely furnished with soft hairs.
S i X t h 1 i m b (fig. 25) : — This is rather elongated and has a rather varying number
of bristles; the types and relative lengths of the bristles also vary both from one specimen to
another and on the right and the left side of the same specimen. Protopodit e: The first
endite has only one rather long and powerful distal bristle, furnished with about three oblique
wreaths of secondary bristles and pectinated distally; this endite always seems to be without
any medial bristles. The second endite usually has three distal bristles, of which the two dorsal
ones are subequal, rather long and powerful and have at the middle a few wreaths of long, stilf
secondary bristles-and are pectinated distally; the ventral bristle is somewhat shorter, but
powerful, at the middle it has a wreath of long, sti ff secondary bristles, distally of which there
are a few powerful secondary teeth. This process usually has, in addition, two short, plumous
medial bristles. Variations in the number of the bristles were observed, the folio wing numbers
were found: three distal bristles + one medial bristle; three d. + three m., four d. + two m.,
four d. + three m. and even four d. + four m. The third endite usually has three distal bristles
and one medial bristle. Of the former the middle one is of the same type as the ventral one
on the preceding endite, the dorsal and the ventral ones vary in type, sometimes liaving short
hairs, sometimes having one or a few wreaths of long, stiff secondary bristles at the middle and
short hairs distally. The medial bristle is of about the same lengtli as the distal bristles and has
a wreath of long secondary bristles at the middle and short hairs distally. Variations were
observed with regard to the number of bristles, the following numbers were found : three distal
bristles -f- no medial bristle, three d. + two m. and four d. + one m. The e p i p o d i a 1
appendage of the protopodite is represented by from two to four short, bare or almost
bare bristles. Exopodite: First joint: The endite usually has six distal bristles and one
medial bristle. Of the former one of the middle ones is about the same as the ventral distal
bristle on the second endite of the protopodite, the others are rather long and powerful, varying
in type, sometimes having short hairs and sometimes with one or a few wreaths of long, stiff
secondary bristles at the middle and short hairs distally. The medial bristle is similar to the
corresponding bristle on the preceding endite, sometimes, however, having only short hairs.
Other numbers of bristles that were observed were as follows: six distal + two medial bristles, five
d. + one m. and three d. -j- one m. Second joint: This has from 25 to 32 bristles, some rather
long and others rather short, all situated near the ventral edge; there is no pronounced gap
<< prev. page << föreg. sida << >> nästa sida >> next page >>
