1044 Wisconsin Academy of Sciences, Arts, and Letters. 
In the ephippial female (PL LXX, fig. 9) there is developed 
on the valves a densely reticulated ephippium, not unlike that 
of Iheringula. There are two ephippial eggs but in the speci¬ 
mens these were not deposited in the ephippium, nor were 
any cells for them seen. Perhaps they are placed in a circu¬ 
lar chamber, as in Iheringula. 
The male (PI. LXIX, fig. 8) is about 0.4 mm. long. It has 
a large antennule; the projections of the labrum are little 
developed; the vas deferens opens in front of the terminal 
claws. The first foot (PI. LXIX, fig. 7) has a large hook, 
which hears a spine on its inner curve and which is toothed at 
the end. 
Prom this account of the animal the following generic de¬ 
scription may he given, modified from Daday. 
Genus. Wlassicsia Daday. 
Porm oval or sub-quadrangular, not compressed. Valves 
with small dorsal crest, setae on ventral margin; marked by 
fine, transverse striae, forming delicate reticulation with 
meshes whose long axis is transverse. Head large, rounded 
as seen from side; no cervical sinus; small cervical gland; 
rostrum practically obsolete. Pornices moderate, extending to 
end of rostrum. Labrum with a pair of processes at the base; 
a large triangular projection further back; and beyond this 
another rounded lobe, which extends backward over small, 
delicate terminal lobe. Antennules freely movable, long, slen¬ 
der; with basal sense hair; olfactory setae short, unequal. 
Antennae moderate; setae °y 0 ~ 1 the proximal seta 
of ventral branch stiff but not very stout. Pive pairs feet. 
Abdominal process present. Postabdomen large, bilobed. Ter¬ 
minal claws small, curved, with one very small basal spine. 
Intestine not convoluted, with two hepatic coeca. Eye large 
with abundant pigment and few lenses. Ocellus small, quad¬ 
rate. Large,, closely reticulated ephippium, with two eggs. 
Male with large antennule; small processes on labrum; hook 
on first foot. 
