22 BULLETIN 201, UNITED STATES NATIONAL MUSEUM 



series number 542, latitude 18°37'15" N., longitude 65°3' W., 300 

 fathoms, March 3, 1933, 1 specimen, 19 mm. 



Distribution— Gulf of Mexico and Caribbean Sea, 119 to 3( ) 

 fathoms. _ ry^c 



Remarks. — These specimens were also recorded by me iii *\19o » • i| 

 agree very closely with Faxon's description and figures. The car? [' t 

 is smooth, without tubercles or spinules. The antennal scale has nine 

 teeth on the outer margin in addition to the terminal spine, rather 

 more than in Faxon's specimen where there were only six teeth. The 

 telson has five to seven spines on the lateral margins including the 

 apical spines, and between the latter are five to seven spinules. In 

 both specimens the rostrum extends well beyond the antennular 

 peduncle but is shorter than the scale. 



Genus PARALOPHOGASTER Hansen 



Paralophogaster Hansen, 1910, p. 15. 



PARALOPHOGASTER GLABER Hansen 



Paralophogaster glaber Hansen, 1910, p. 16, pi. 1, figs. 2a-2n. — Tatteksall, 1923, 

 p. 279. 



Occurrence. — Japan: Albatross stations 4816, 1 specimen, 20 mm.; 

 4817, 1 specimen, 20 mm. Philippine Islands: Albatross station 

 5121, 6 specimens up to 25 mm. ; 5456, 4 young specimens, 6 mm. 



Distribution. — East Indian seas, off New Zealand, western north 

 Atlantic. 



Remarks. — These specimens agree well with Hansen's description 

 and figures except that the antennal scale is only iy 2 times as long as 

 the antennular peduncle. There is a prominent median dorsal blunt 

 spine on the carapace at the base of the rostral plate. Two of the 

 young specimens from station 5456 have no median rostral tooth and 

 in all the young specimens there are only two or three spines between 

 the two long spines near the apex of the telson. 



In 1937, when describing P. atlanticus, I compiled a key to the 

 known species of this genus. Since that paper a further species, 

 P. intermedius, has been described by Coifmann (1936, p. 10). The 

 paper in which this species was described reached me too late for in- 

 clusion in my paper. There are thus six described species of the 

 genus. 



One of the characters upon which I relied for the separation of the 

 species was the relative length of the antennal scale. This was de- 

 scribed as twice as long as the antennular peduncle in P. glaber and 

 P. macrops, and only iy 2 times as long in the other species. The exam- 

 ination of the present material shows that, as far as P. glaber is con- 

 cerned, this character does not hold, for the antennal scale is only V/ 2 



