350 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loc 



5 (fig. 2,d-f). The hind margin of the sixth joint of peraeopods 3 to 5 

 does not boar spines except at the distal end. 



Metasome segments 2 and 3 with lower hind corner quadrate, or 

 a little less than a right angle in some specimens. Uropod 1 projects 

 farther back than 2, and 2 farther than 3. Uropod 1: Peduncle a 

 Uttle longer than the subequal rami, armed on upper outer margin 

 with three or four spines and an apical stouter spine; outer ramus 

 \\-ithout marginal spines but armed apically with one long and several 

 shorter spines; inner ramus with three or four marginal spines and 

 several apical spines. Uropod 2: Outer ramus without marginal 

 spines, but with apical spines; inner ramus wdth two marginal spines 

 and apical spines. Uropod 3: Very short, peduncle not extending 

 beyond the telson and about equal in length to the outer ramus which 

 bears only terminal spines; inner ramus very small and as shown for 

 that of P. hawaiensis (fig. 4,7i). 



The gills are simple. The small vesicle accompanjdng the gills of 

 the second gnathopod and those of the first four peraeopods referred 

 to by Stebbing (1897, p. 26) could not be found. Stebbing says, 

 "The skin has some minute setules scattered over it," but these could 

 not be found in any of the specimens studied. 



Males from the West Indies measure about 9 mm. from the front of 

 the head to the end of the uropods. Males from the Galapagos 

 Islands measure 10.5 mm. 



Female: The female is much like the male, but with the differences 

 usual in the closely related genus Hyale. The antennae are shorter, 

 and the gnathopods are smaller and weaker (fig. l,e,f). The marsupial 

 plates are like those of P. hawaiensis (fig. 4,r). 



In the collection of the U. S. National Museum there are specimens 

 of P. fascigera from Florida; Texas; Jamaica; Haiti; Puerto Rico; St. 

 Croix; Dominica; Martinique; Venezuela; Curagao; and Sabanilla, 

 Colombia; and, from the Pacific, west coast of Mexico; Peru; Juan 

 Fernandez Islands; and Gahlpagos Islands. 



Parhyale fascigera penicillata, new subspecies 



Figure 2,g-i 



This subspecies is much like P. fascigera. Antenna 2 of the male 

 carries two groups of plumose setae on the lower distal end of the 

 fourth joint, and five groups on the lower margin of the fifth joint 

 (fig. 2,g). The sixth joint of the first gnathopod of the male is nar- 

 rower than in tj^pical Jascigera, and the large palmar spine is at the 

 defining curve; the seventh joint is short. The second joint of the 

 second gnathopod of the male is without a lobe at the lower front 



