1038 Wisconsin Academy of Sciences, Arts, and Letters. 
enlarged than any here given. The ventral margin bears 
numerous stont, rather short spines and spinules. 
The head is not large; the fornices are of moderate size and 
continued to the end of the head; the rostrum hardly exists. 
There is a small cervical gland, hut no cervical sinus. 
The antennules are freely movable, cylindrical, slightly 
curved, beset with transverse rows of very tine short hairs. 
They have a basal sense hair and the olfactory setae are of 
moderate length and unequal. 
The antennae are about as large as in Lathonura. The 
setae are ° ~ ° ~ 1 the proximal seta of the ventral ra¬ 
mus is stiff, but not stout; the others are sparsely plumose, 2- 
jointed. The spines are °~ 1 ~ - ~ all small. 
The labrum has a pair of small, conical elevations near the 
base; then a very large, characteristic, triangular or conical 
elevation, and beyond this a small, rounded lobe, extending 
backward and overlying the small and delicate terminal lobe. 
In the presence of the two small elevations at the base and the 
large median elevation Wlassicsia resembles Grimaldina and 
Bunops. The large projection and most of the rest of the 
labrum are filled with an opaque granular substance, perhaps 
glandular. (PI. LXIX, fig. 4, e, e' e") 
There are five pairs of feet. I give figures and descrip¬ 
tions of them. I do this partly because my specimens differ 
in details from the figures given for W. pannonica by Daday, 
and partly because there seems to be some difference of opinion 
among authors as to the comparative morphology of the ap¬ 
pendages, especially the first and second pairs. 
The first foot (PL LXIX, figs. 5, 6; PI. LXX, fig. 2) is by 
far the largest and is bent at an angle. The protopodite and 
endopodite are beset with clusters of short hairs. The exo- 
podite (d, PI. LXIX, fig. 6) bears one long two-jointed seta and 
a second seta on the outer side, much smaller, delicate and 
plumose. The function of this last is apparently sensory. 
The endopodite has two main parts: the outer branch (e) 
and the inner branch (e' e"). The former is closely 
