■ 84 THREE NEW SPELIES [D-cembcr, 



iistant granules, and touchirjg the anterior segment of the 

 )ody; hands of the antermr feet dilated, ovate, thumb as 

 ong as the palm, nearly attaining the carpus, tip closing' 

 nthin a prominent, spinose tooth, on the base of the palm; 

 lands of the second pair cylindric, incurved, with a pro- 

 cess dentate at tip, and placed at the inner base, armed 

 with an equal incurved thumb not closing on the hand, 

 obtuse, and furnished with a seta at tip; remaining feet 

 ciliated. 



Lengih half an inch, breadth rather more than one 

 fifih of an ii.ch. 



Found with the preceding species, common. 



3. N. ovalis^. Body oval, depressed; ultimate scg^ 

 ment of the tail obtuse, with three hardly raised very ob- 

 tuse lines at base; lateral appendices dilated, three caudal 

 seg^nients 



Inhabits bays and inlets of the United States; com- 

 rion. 



Cabinet of the Academy. 



Body perfectly oval, segments subequal, fourth, fifdi, 

 and sixth largest, first segment of the tail equal to the 

 preceding one, simple; terminal segment triangular, ob- 

 tusely rounded at tip, rectilinear each side, half as long as 

 tlie bodv, wltli three longitudinal, abbreviated, raised, 

 v'.ry obtuse- lines at base, of which the middle one is 

 most conspicuous; lateral processes dilated, depressed, 

 rectilinear within and rounded on the external miirgin,so 

 as to form widi the terminal segment a perfectly semi- 

 crbicuhir terrninauon of the body, without interval; head 

 somewhat unequal; er/es conspicuous, hemispherical; 

 n-iteriJice equal; labrum triangular, advanced, very con 



