no. 1480. SCHIZOPOD CR US r R I CE. I NS— ORTM. 1 NN. 47 



(50 to TO mm.). But I am not quite sure of it, and so I prefer, for 

 the present, to regard G. sarsi as a variety of G. zoêa (= willemoesi). 

 It should be mentioned that Faxon a thinks that G. sarsi is "a form 

 probably not specifically distinct from G. willemoesi." 



The young specimens extracted from the pouch of the old female 

 show a distinct angle or point behind on each side of the carapace, 

 but as the carapace is rather shapeless, being represented by a kind of a 

 bag tilled partly with oily or fatty substance (yolk), it is impossible to 

 correlate these two small points with the infero-posterior corners of 

 the carapace, although this correlation is very probable. 



3. I have shown that the denticulation of the posterior margin of 

 the carapace and of the dorsal spine does not constitute a specific 

 character. 



1. The subdorsal keels of the abdomen, mentioned hy Wood-Mason, 

 ire present in all specimens at hand. The}^ are formed by rather faint, 

 blunt elevations, and I should not call them keels. They are easil} T 

 overlooked, especially in poorl} T preserved material. 



5. A third, fine median keel of the telson is distinctly seen in Sars's 

 illustration of the telson of G. willemoesi (Plate V, fig. 6), and is present 

 m all specimens examined b} T myself. On closer examination I find 

 that this median keel is rather a fine double keel. 



Wood-Mason's sentence that the telson "appears to be more pro- 

 iuced at the tip than in any other species'- is, as I have alread}^ 

 remarked in the report on the Hawaiian Schizopods, unintelligible to 

 lie. I do not see any difference from other species in the shape of the 

 jelson. 



Localities represented in the TJ. S. National Museum. 



FROM U. S. BUREAU OF FISHERIES STEAMER AVxttrOSS STATIONS. 



GNATHOPHAXTSIA Z0ÈA. 



2723 — 1 female (gravid). Between Nantucket and Cape Charles, 1,685 



fathoms. 

 1306— 1 male. Off San Diego, California, 207-197 fathoms. 



GNATHOPHAUSIA Z0ÈA SARSI. 



3351 — 1 young. Between Havana and Yucatan; 126 fathoms. 



Pre v io us records . 



Typical form, as G. zoêa: West of Azores, 1,000 fathoms (Sars); 

 rropical Atlantic, 1° 17' North, 2±° 23' West, 1,850 fathoms (Sars); 

 )fi Brazil, 770 fathoms (Sars); Pacific, north of Kermadec Island, 600 

 [athoms (Sars); off Galapagos Islands, 381 and 581 fathoms (Faxon); 



«Mem. Mus. Comp. Zcol., XVIII, 1895, p. 215. 



