432 }VisG37isin Academy of Sciences, Arts, and Letters. 



with rather small spines. The lateral hairs of the second basal , 

 segments are delicate. The exopodite is composed of three seg- 

 ments. The first segment is stout, its length being to its 

 breadth as V/^ to 1. The second segment is produced into the 

 customary hook, which is armed Avith short hairs on its inner 

 margin and with a spine on the outer distal angle. The third 

 segment is distinct and armed terminally with two spines, the 

 inner being distinctly plumose. The endopodite is nearly a 

 third longer than the first segment of the exopodite, and is in- 

 distinctly divided into two segments. It is terminated with 

 two rather long spines, and is armed on the inner surface of the 

 tip with short, stout hairs. 



In the male fifth feet, the spines of the first basal segments 

 are also rather small. The second basal segment of the right 

 foot is considerably longer than broad, and its inner and outer 

 margins are curved. The lateral hair is situated at three- 

 fourths of its length. The first segment of the right exopodite 

 is nearly square. The second segment is more than twice the 

 length of the first, and the lateral spine is situated nearly at 

 the end of the segment. The terminal hook is falciform, quite 

 symmetrical in its form, and equals in length the combined 

 lengths of the basal segments and of the exopodite. It is finely 

 denticulate in the inner margin. The endopodite is slender 

 and somewhat longer than the first segment of the exopodite. 

 The left fifth foot of the male extends to about one-half the 

 length of the second segment of the right exopodite. The lat- 

 eral hair of the second basal segment is situated very near the 

 end of the segment. The first segment of the exopodite is 

 about twice as long as broad, and armed on its inner surface 

 with a setose pad. The second segment is rather more than 

 half the length of the first and is armed terminally with two 

 blunt processes. It has also two setose pads, one nearly ter- 

 minal and the other on the proximal half of the inner surface. 

 The endopodite is indistinctly two-segmented, is slender, and 

 slightly longer than the first segment of the exopodite. 



Forbes, in the original description, speaks of the female ab- 

 domen as being asymmetrical. This did not appear to be the 



