642 Wisconsin Academy of Sciences , Arts , and Letters. 
Tlie dorsal antenna is just in front of the transverse neck fold; 
the lateral antennae are placed well forward and nearer the dorsal 
side than is usually the case. 
The mastax of this species is a modification of the virgate type, 
intermediate between Enteroplea (= Triphylus) and Eosphora 
and still retaining the pumping action. The rami are symmetri¬ 
cal and elongate-triangular with a right-angled bend near mid¬ 
length. There is an elongate, rather narrow ventral opening be¬ 
tween the rami, and a much larger, ovate opening dorsally be¬ 
yond the angle. Between these two openings there are four or 
five very small teeth in each ramus. The fulcrum consists of two 
plates with their dorsal edges joined to form a V. The unci have 
only a single, strong, slightly curved tooth; at its base there is a 
very small, subsquare plate with two faint striae as the last rudi¬ 
ments of the normal 4 to 6 teeth. The manubrium is a nearly 
straight rod, with a small triangular expansion at its anterior 
end. The piston is large and well-developed. Salivary glands 
have not been observed; the gastric glands are unusually large. 
The stomach is joined to the intestine without constriction. A 
large bladder is present. The foot glands are large, elongate, and 
almost cylindrical, terminating in a large mucus reservoir at the 
base of the toes. The ovary is large and slightly elongate; the 
nuclei are irregularly polygonal in outline. 
The ganglion is comparatively small and rounded. The retro- 
cerebral organ consists of a small sac and two subcerebral glands, 
nearly as large as the sac; they do not appear to include bacte- 
roids at any time, either in young or in full-grown animals. No 
eye-spot is present. 
Total length 350-400/*; toes 20-22/*; trophi 33/*. 
Eosphora anthadis appears to be widely distributed, although 
it is usually found in small numbers. 
Eosphora Gelida Harring and Myers, new species 
Plate LX, figures 1-6 
The body is elongate, nearly parallel-sided, and quite slender; 
its greatest width is only one fourth of the total length. The 
integument is unusually flexible, and the animal is highly con¬ 
tractile. The body is very transparent. 
The head and neck are not separated by any external fold; 
