622 " THETIS " SCIENTIFIC RESULTS, 



and wrist in botli gnatliopods are furnished with many long 

 set99. 



The first and second peraeopods resemble those of the female 

 except in regard to the second joint, which is more expanded and 

 has the front margin fringed with short spines as well as thesetse 

 or slender spines with which the other sex appears to be content. 

 The third peraeopods differ from those of the female also in regard 

 to the second joint, this being in the male nearly as broad as long,, 

 instead of twice as long as broad. The fifth peraeopods of the 

 male have a large group of very long seta) at the apex of the 

 sixth joint, not perceived in the female. 



In the peculiar third joint of the mandibular palp, the missing 

 dorsal arch of the sixth pleon segment, the minute rami of the 

 tliird uropods, and numerous other characters both sexes agree. 



Localities. — Off Manning River; off Port Hacking; and off 

 Wata Mooli, from 54-59 fathoms. The "Challenger " specimens 

 were taken off Melbourne, at a depth of 33 fathoms. No doubt 

 the supposed male had lost its second gnatliopods, 



Family PODOCERID^. 



Podoceridce, Stebbing, Das Tierreich, xxi., 1906, p. 694, 

 Podoceridte, Chevreux, Mem. Soc. Zool. Fr., xx., 1908, p. 521. 



Genus PODOCERUS, Leach. 



Podocerus, Leach, Edinb. Encycl., vii., 1814, p. 433. 

 Podocerus, Stebbing, Das Tierreich, xxi., 1906, pp. 700, 741, 

 Podocerus, Chevreux, Mem. Soc. Zool. Fr., xx., 1908, p. 521. 



In 1908 Chevreux added a new species to this genus, from the 

 Gambler Archipelago, naming it after the island at which it was 

 taken, P. tnangarevoi. 



PODOCERUS HYSTRIX, sp.nov. 



(Plate Iviii.). 



Stations 28, 35, 37, 57. 



From the " Challenger " specie,?, Podocerus dan(x, the present 

 species may be distinguished by the more numerous processes on 

 the peraeon, the different structure of the second gnathopods in 

 the male, and the considerably smaller size. In its ornamenta- 

 tion it bears a striking resemblance to the species which Professor 

 Haswell in 1888 described as Cyrtophiiim{V) hystrix, but subse- 

 quently transferred to Lcetmatophilus. As Haswell had only a 



