46 
“TERRA NOVA” EXPEDITION. 
Third right leg— 
First coxa 
Second coxa 
Third coxa 
Femur . 
First tibia 
Second tibia 
Tarsus and propod us 
Claw 
2-0 
6-0 
2*25 
16-5 
14-0 
19-0 
3 • 75 
2-0 
Remark. v.—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 Pallenopsis in the absence 
of auxiliary claws * and of the femoral gland-duct of the male, and most conspicuously 
in the structure of the ovigers. In the first of these characters it resembles 
P. macron//,r, 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. spicata. 
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. 
Gi 5NUS PHOXICHILIDIUM, Milne-Edwards. 
Phoxichilid iit hi 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 Heteropattene (1910&, p. 225). 
| 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. 
