CRUSTACEA OF ALABAMA. 29 



nal segment armed with two very long setae and one shorter one ; caudal stylets very 

 slender, with a terminal claw, a sub-terminal claw somewhat smaller and a weak petinate 

 seta one-fifth the length of the stylet from the end ; palp of mandible very bristly. The 

 intromittant organ of the male is more simple than those hitherto described, consisting 

 of a broad, flat basal segment on either side, with a coiled ductus ejaculatorius and a 

 funnel-shaped terminal portion consisting of two opposable flaps. The basal segment is 

 indistinctly two-jointed and those of both sides are seated on a common prominence. 



Length of male, 1.70 mm., of female 2.16; height of male, .84 mm., of female 1.24. 

 The above measurements are too large, but express the correct proportions. It is one 

 of the smaller species. 



Cypris striolata, Brady. 



(Plate'IV, Fig. 3.) 



"Shell broadly ovate; greatest height in the middle, equal to about two-thirds of 

 the length. Dorsal margin strongly arched, sloping with a gentle curve toward the an- 

 terior, but with a bolder sweep toward the posterior extremity, ventral margin mostly 

 somewhat convex. Anterior and posterior margins rounded, the former somewhat nar- 

 rowed. Seen from above, the outline is compressed, oval, rather narrowed in front, the 

 greatest breadth equal to less than half the length. End view oval. The surface of the 

 shell is highly polished and marked by closely set longitudinal anastamosing striae. 

 Color dark brown. Length one thirty-third, height one-fiftieth of an inch." The setae 

 of the lower antennae unequal, three being long ; second foot with one long seta and two 

 shorter ones ; caudal stylets rather short, with two nearly equal claws near the end. .60 

 mm. long ; widely distributed. 



[Genus notodromas, Lilljeborg.] 



There seems to be no longer sufficient reason ior considering this genus distinct 

 from Cypris, as none of the assumed generic characters are distinctive unless it be the 

 form of the maxillae. Comparing the second maxillae in Cypris, Candona, and Notodro- 

 mas, it is at once seen that there are only differences in the degree of modification. The 

 pediform nature of these maxillae seems in no sense of generic importance, neither are 

 there peculiarities in the structure of the shell not seen in less extreme development in 

 members of the genus Cypris. The eyes, however, are not confluent as in Cypris. 



Cypris (Notodromas) monacha, Mueikr. 



(Plate IV, Fig. 4.) 



Shell, in the female, sub-quadrangular, dorsal outline strongly curved, highest back 

 of the middle, anterior and posterior margins meeting the lower line at an angle, passing 

 into the upper one by a flowing curve, lower outline slightly convex, lower surface bear- 



