362 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



Remarks. — This species resembles somewhat Wilson's (1913) 

 slender Hatschekia oblonga, but it differs in the absence of a neck, 

 the shape of the carapace, the armature of the legs, the length of 

 the caudal rami, and in having double hooks on the maxillipeds. 



HATSCHEKIA species 



Figure 74, u-w 



Female. — Two specimens were taken from the gills of a rock 

 beauty, Holocanthus tricolor (Bloch), but both are so mutilated 

 that it does not seem proper to assign to them a specific name. 



Body slender, about seven times as long as wide. Frame for 

 head rectangular. Second antenna with basal segment growing 

 smaller distally ; terminal hook curved and sharp pointed. Caudal 

 rami minute, rough tipped and bearing one small seta ; smaller than 

 hooks on either side of them. 



Measurements: Length 1.0 mm.; width 0.15 mm. 



Male. — Unknown. 



Remarks. — This species appears to differ from others in the 

 genus in its minute caudal rami and the large hooks lateral to them. 



Family EUDACTYLINIDAE 



Genus KR0YERIA Beneden 



KR0YERIA SPATULATA Pearse 



Kr0yera spatulata Pearse, Journ. Elisha Mitchell Sci. Soe., vol. 64, p. 127, 

 figs. 1-10, 1948. 



Two females came from the gills of a sand shark, Carcharias 

 littoralis (Mitchill). 



Genus NEMESIS Risso 



NEMESIS PILOSUS, new species 



Figure 75 



Female. — Cephalothoracic carapace elliptical, slightly longer 

 than wide, pilose throughout ventral surface. First free thoracic 

 segment a little longer than the two following, which are about 

 the same length, each segment completely covered dorsally by a 

 plate that overlaps the one behind it a little and laterally is some- 

 what enlarged and curved ventrally. The fifth segment is narrower 

 than those preceding it ; nearly twice as wide as long ; dorsal plate 

 does not extend laterally and hence does not curve ventrally. Geni- 

 tal segment not quite so long as and two-thirds as wide as fifth 

 segment. Abdomen 3-segmented; first segment widest, first and 



