301 
The caudal appendages are only a little shorter than the 
protopodite of cirrus VI; in the right appendage of one specimen 
there were 6, in the left one 5 segments, but in the latter the 
basal segment is twice as long as in the right appendage, thus 
certainly representing two segments. 
The penis is twice as long as cirrus VI, annulated, and only 
with a tuft of hairs at its distal end. 
The branchiae are rather large with plicated surface. 
The present species in many respects holds an intermediate 
position between Catophragmus imbricatus and Catophragmus poly- 
merus. With the latter it shares the great number of compartments, 
and the ridged plates, although the arrangement of the ridges is 
asymmetrical in Catophragmus polymerus , but symmetrical in the 
present species. With Catophragmus imbricatus it has the caudal 
appendages in common, but they are more fully developed in the 
present species, which also has a greater number of compartments. 
It must, therefore, be regarded as a separate species, and I have 
allowed myself to name it Catophragmus Pilsbryi after the eminent 
cirriped investigator Henry A. Pilsbry. 
The species seems to be strictly litoral, judging by its finding 
place; it thus would seem to be possible to get material for a 
study of its development, a tempting task on account of the sup- 
posed primitive position of the genus among the sessile barnacles. 
Genus Pachylasma Darwin. 
Pachylasma scutistriata n. sp. 
38° 25’ S., 148° 28’ E., 70—80 fathoms. „Endeavour“ 8/IX 14. Two 
specimens. 
38° 15’ S., 148° 43’ E., 70—120 fathoms. „Endeavour“ 9/IX 14. Sev- 
eral specimens, mostly attached to crinoid stalks, some (without 
substratum) overgrown with sponges. 
38° 12’ S., 149° 40’ E., 100 —160 fathoms. „Endeavour“ 16/IX 14. Sev- 
eral specimens on the stem of an antipatharian, together with 
Oxynaspis celata, Heteralepas morula, Ibla pygmæa, and Ba¬ 
lanus auricoma. 
Compartments pink with whitish alae; radii absent. The alae 
are very broad, and distinctly striped perpendicularly to their upper 
