MAC'RURA. SOU MITT. 343 



The thelycum in all of these specimens is much as 

 inat figured for the Darnley Island specimen of 

 P. pulmcnsis (= novfe-guinew) below (Plate Ixi., fig. 1), 

 and seems to be intermediate between those figured by 

 Alcock and de Man. 



The male, and smallest specimen, is about 48 mm. 

 long, of which length the carapace and rostrum together 

 equal 17 mm. This is the identical length given by 

 McCulloch for the holotype for the same interval (see 

 previous pages). This, of course, indicates some error 

 in HaswelPs original measurement given as "2-5 inches," 

 a length which would be some 15 mm. greater than the 

 compared specimen before me "which," as Mr. McCulloch 

 distinctly states above, "is of about the same size" as the 

 holotype. 



The rostrum has six teeth on its free, portion, all 

 before the orbital margin, not counting the epigastric 

 tooth on the carapace, thus giving a total count of 

 seven teeth, or one more than in the holotype. The 

 first or epigastric tooth is about as far from the second 

 as this is from the fourth ; beginning with the second 

 tooth, the interval between the successive teeth becomes 

 greater until the sixth is reached. The distance from 

 the sixth to the seventh is but half that between the fifth 

 and sixtli ; the seventh is situated at three-fifths the 

 distance from the sixtli to the tip. The rostrum is 7-5 

 mm. long and reaches about two-thirds the length of the 

 last segment of the antennular peduncle, which is about 

 as long as the antennal scale. As in P. stridulanx 

 (= P. norce-guinetr) there is an inconspicuous postocular 

 notch, or denticle ; a strong antennular spine, and a 

 small but well-formed and distinct hepatic spine. In 

 this particular, HaswelFs holotype, as well as the fore- 

 going specimens, are at variance with his description, 

 which states that the hepatic spine is absent. The 

 stridulating organ is quite inconspicuous, but plainly 

 seen with a glass, and composed of 11 or 12 little quad- 

 rangular, tuberculiform ridges on a slightly raised, non- 

 pubescent, curved band. The third rnaxillipeds extend 

 nearly four-fifths the length of the anteuual scale; the 

 first pair of legs easily attain the end of the antennal 

 peduncle, as do also the fourth legs ; the second legs 

 exceed the first by the length of their hands, and the 

 third legs in turn exceed the second by their hands and 



