PHOXICHILIDIIDAE 



50'' 20' S, 62° 30' W, 162-161 m.; gn. S. Sh. 



48°52'S, 6o°25'W, 195-20701.; f. gn. S. 



89 



Commercial otter trawl: 



Commercial otter trawl : 



St. WS 225. 9. vi. 28. 

 I specimen. 



St. WS 234. 5. vii.28. 

 I ovigerous (^. 



St. WS 237. 7. vii. 28. 46^ 00' S, 60^ 05' W, 150-256 m.; c. br. S. Sh. Commercial otter trawl: 

 3 specimens (i was apparently undergoing a moult when captured). 



St. WS243. 17. vii. 28. 5i^o6'S, 64^ 30' W, 1 44-141 m.; c. d. S. Commercial otter trawl: 

 I ovigerous cj. 



St. WS 244. 18. vii. 28. 52" 00' S, 62° 40' W, 253-247 m.; f. d. S. M. Commercial otter trawl: 



3 $$, 2 immature specimens. 



St. WS 245. 18. vii. 28. 52" 36' S, 63° 40' W, 304-290 m.; d. gn. S. Sh. Commercial otter trawl: 

 5 ??, 3 (J(J (2 ovigerous) and several young specimens. 



St. WS 246. 19. vii. 28. 52" 25' S, 61° 00' W, 267-208 m.; c. gn. S. P. Commercial otter trawl : 



4 specimens, including i ovigerous cJ. 



Remarks. Caiman, 191 5, p. 42, has suggested that Phoxichilidium patogonicum, Hoek, 

 is identical with Pallenopsis glabra, Mobius. All the syntypes in the Challenger collection 

 are females; the genital pores are quite distinct in all, although the oviger is not fully 

 developed in the smallest individual. Caiman has also commented on the compactness 

 of the body in the Challenger specimens as compared with the Terra Nova material 

 described as Pallenopsis glabra. 



The material in the Discovery collection is, for the most part, of the compact type 

 and was also collected from the 

 Falkland Island area. The largest 

 specimens from this region, e.g. 

 the adult from WS 88, is very 

 similar to the largest Challenger 

 syntype. The small specimens 

 tend to have the lateral processes 

 but little separated and to have 

 rather long fine setae on the 

 walking legs. The smallest speci- 

 men from the more southern 

 region (that from St. 190, length 

 = 9-5 mm.) also has the lateral processes of the body but little separated and setose 

 legs. The largest specimens (Sts. 140 and 187) have the lateral processes separated by 

 a distance equal to their own diameter. 



Although this species reaches a considerable size in the more southern, colder region 

 the males reach maturity early and carry ova when they have reached a length of 

 7-7-5 mm. (from ocular tubercle to tip of abdomen). The genital pores, also, are formed 

 in the females when they reach a length of about 8-9 mm., but the ovigers are not 

 fully developed until later. Even in adult females two of the four termmal segments 

 (7 and 8) are nearly always more or less fused together, as figured by Bouvier (1913, 

 p. Ill, fig. 64). 



a 



Fig. 44. Pallenopsis patagonica (Hoek). Femoral gland-tubercle 

 of male. «. Trunk length = 1 1-2 mm., St. WS 92. 6. A smaller 

 specimen from St. WS 84. c. Trunk length = 107 mm. from 

 St. WS92. 



