46 



'TERRA NOVA" EXPEDITION. 



Remarh. — The specimen described above resembles the holotype, which is also 

 a male, in almost every detail except that it is considerably larger. 



This species differs from the typical forms of the genus Pallenojms in the absence 

 of auxiliary claws * and of the femoral gland-duct of the male, and most conspicuously 

 .in the structure of the ovia;ers. In the first of these characters it resembles 

 P. viacrojiyx, Bouvier, and, apparently, P. brevidigitata, Mobius.f The femoral duct 

 is reduced to a papilla in the former of these species, and is not described or figured 

 in the latter. An important point of resemblance is found in the ovigers of the male 

 sex of P. brevidigitata, which have the sixth segment enlarged and pear-shaped. In 

 that species, however, four normal segments follow the sixth, while in P. spicata the 

 whole distal part is represented by a small papilla. It is worthy of note that this 

 reduced number of segments in the oviger is found in the male sex, since it is in the 

 female that other species of the genus show a tendency to a reduction of this appendage 

 and a coalescence of some of its 'segments (Loman, 1908, p. 63). It would be of 

 interest to know the condition of the oviger in the female and young of P. sjncata. 

 The condition found in the adult type-specimen of Hodgson's " P. setigera," described 

 above, suggests as a possibility that the terminal segments may even be deciduous in 

 the adult male. 



Gends PHOXICHILIDIUM, Milne-Edwards. 



Phoxichilidium australe, Hodgson (Text-fig. 10). 

 P. australe, Hodgson, 1914-15, p. 145. 



Occurrence. — Station 355, McMurdo Sound, 300 fathoms ; 2 ^, 1 ?. 



Description of male. — Trunk elongated, segmentation distinct, lateral processes 

 separated by about their own diameter. Cephalon narrowed in front, and produced 

 over base of proboscis. Ocular tubercle more than half as wide as anterior part of 

 cephalon, not higher than wide, inclined forwards, broadly rounded, with a small apical 

 tubercle. Eyes dark. 



* Cf. also Hodgson's Heteropallene (1910&, p. 225). 



f Although Mobius mentions "2 Nebenklauen " among the characters of the genus, they are 

 omitted from his figures and not mentioned in his description of this species. 



