COPEPODA.—BRADY. 381 
from two examples taken at New Amsterdam, and described by me in the Report on 
the Harpacticoidea of the German South Pole Expedition. I have thought it desirable 
to give further figures of some of the more important structural details which I was 
able to examine more fully in the specimens here referred to. The only discrepancy 
of any moment is the absence of a secondary branch in the posterior antenne, but this 
may very likely have been lost in the processes of collecting and preservation. ~ 
MAcHArRopus picrratus Brady. 
Macharopus digitatus Brady, 1910, p. 559, Plate LVI, figs. 1-9. 
A single specimen, doubttully referable to this species, occurred in the tow-net 
gathering from Station 18, 
Family Diosaccipa. 
Genus Amputascus G. O. Sars, 1905. 
AMPHIASCUS ELEGANS sp. nov. 
(Plate X., figs. 1-12.) 
Length 0:87 mm. 
Female.—Body rather slender, the anterior portion scarcely broader than the 
posterior; cephalic. segment about as long as the remaining four segments of the 
cephalothorax; rostrum very stout and prominent, reaching as far as the first two 
joints of the anterior antenne. Urosome barely as long as the metasome, and scarcely 
at all tapering backwards; caudal rami irregularly quadrangular, dilated basally, about 
as broad as long. Anterior antenne slender, eight-jointed, the first two joints much the 
largest, the terminal four jointed each about half as long as the proximal portion ; 
the following formula indicates approximately the proportionate lengths of the joints; 
SUSU IN A, I, i, ie 
joint of the outer branch very small; outer branch of the first pair of legs three-jointed, 
about half the length of the inner branch, the three joints equal in length; inner branch 
three-jointed, the median joint very short, distal joint more than twice as long and 
bearing two strong apical sete. Last pair of legs foliaceous, the two lamin of nearly 
equal length, the outer one ovate, the inner sub-cuneate, tapering to the distal end, 
> th oe ; 
iy ty By ey ht ; 3 posterior antenna stout, strongly spiniferous, middle 
both branches bearing several marginal sete. 
Male.—Anterior antenne geniculated and irregularly nodose as usual, the 
posterior maxilliped slender, elongated, rather strongly clawed, but almost destitute 
of setae; endopodite of the second pair of feet much modified, the distal joint carrying 
two strong apical spines, the inner one long, the outer very short, also two long apical 
sete, one of which is dilated at the base; fifth pair of legs short, the basal lamina broad, 
with a truncated and strongly ciliated distal extremity, the distal outer lamina small, 
broadly ovate, with five strong marginal sete. 
Taken at Stations 7 and 10 sparingly. 
