354 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loe 



Stebbing to be present in P. fascigera. Males from Ecuador reach a 

 length of 11 mm., and males from Fort Jefferson, Tortugas, Fla., 

 12 mm. 



Female: Tlie female is much like the male except in the gnatho- 

 pods. Gnathopod 1: More slender than in the male; second joint 

 about as long as the fifth and sLxth joints combined and with a small 

 rounding lobe on the lower front margin; fifth joint shorter than 

 sixth, with a rounding lower lobe; sixth joint not quite twice as long 

 as wide, hind margin with a row of spines; palm not as oblique as in 

 the male, convex, with a row of four or five curved spines interspersed 

 with more numerous shorter spines, below which are four or five 

 groups of long spines, defining angle evenlj^ rounding with a stout 

 spine on the outside and one on the inside, and bearing a very few 

 of the minute rasping teeth like those of the male; seventh joint not 

 so aquiline as in the male, fitting palm, bearing three spinules on the 

 inner margin and two longer ones near apex (fig. 4,o,2>). 



Gnathopod 2: Stouter than 1; second joint equal in length to the 

 fifth and sixth joints combined, widening distally with the lower 

 front margin produced downward into a more or less triangular lobe, 

 which is somewhat more prominent than that of the second gnathopod 

 of the male; fourth joint produced forward below; fifth joint about 

 two-thirds as long as sixth; sixth joint about one-third longer than 

 wide and widest in the middle, hind margin about as long as palm, 

 slightly bulging in the middle and bearing a row of long spines; palm 

 quite oblique, slightly convex, armed with four or five curved spines 

 and a row of more numerous shorter spines below which are five 

 groups of long spines, defined by two stout spines, and merging into 

 the hind margin by an evenly rounding curve; seventh joint fitting 

 palm and bearing six spinules on inner margin and two or three longer 

 ones near the apex. 



The marsupial plates are drawn out into a long narrow apex and 

 densely fringed with rather short setae (fig. 4,r). Cheveux (1901, p. 

 401, fig. 17) shows this character for Hyale brevipes. 



Females from Hawaii measure 7 mm.; those from the Galapagos 

 Islands, 8.5 mm. 



As all of Dana's types have been destroyed, a neotype is here being 

 designated. 



Neotype: A male, USNM 96984, from the Waikiki Maime 

 Laboratory, Honolulu, Hawaii, taken by G. S. Mansfield on Apr. 

 24, 1942. 



There has been considerable confusion as to the status of these 

 two species of Parhyale. Dr. K. Stephensen (1948, p. 6) appears to 

 have been the first to have noted the characters which distinguish 



