i 34 DISCOVERY REPORTS 



Description. Distinguished from tumida by the single tooth on pleon segment 4. 

 The telson is scarcely more than twice as long as broad, the inner margins of the lobes 

 straight, not sinuous. Secondary cutting plate in right mandible represented by a very 

 stout spine (cf. Barnard, 1916). Second joint of peraeopod 5 with two (or three) long 

 plumose setae arising from the submarginal keel on the inner surface. No trace of eyes 

 or ocular pigment. 



Remarks. A very close ally of tumida, which is a typical northern form, but has been 

 recorded off the coasts of South Africa and California. 



Genus Synopioides, Stebb. 

 Stebbing, 1906, p. 226. 

 Schellenberg, 1926, p. 336. 



Synopioides macronyx, Stebb. 



Stebbing, 1888, pp. 1000, 1223, pi. xciv^4; 1906, p. 227. 

 Schellenberg, 1926, p. 336; 19266, p. 225, fig. 17. 

 Barnard, 1930, p. 363, fig. 34. 



Occurrence: 1. St. 89. South Africa. 3 ?$ 9-1 1 mm. 



2. St. 256. South-east Atlantic. 1 $ 9 mm. 



Remarks. Head and other characters as described by Schellenberg (1926 b). Second 

 joint of peraeopod 3 distally expanded on hind margin, of peraeopod 4 ovate, slightly 

 concave proximally, of peraeopod 5 pyriform. 



Distribution. Atlantic: 43°N-3i°S. Southern Pacific and Indian Oceans. 



Genus Halice, Boeck. 



Stebbing, 1906, p. 228. 



Chevreux, 1912 {Bull. Inst, ocean. Monaco, no. 233), p. 1. 



Barnard, 1925, p. 347. 



Halice profundi, n.sp. 



Occurrence: \. St. 41. South Georgia. 1 $ 12 mm. Type $. 



2. St. 45. South Georgia. 3 ?$ 8-10 mm. Type ?. 



3. St. 142. South Georgia. 1 $ 10 mm., 1 ovig. ? 11 mm. 



4. St. 208. South Shetlands. 1 immat. ? 1 1 mm. 



5. St. MS 71. South Georgia. 1 $ 8 mm. 



Description. Very like abyssi, Boeck. Rostrum extending scarcely to midway along 

 1st joint of antenna 1. The short inferior margin of head projects considerably farther 

 downwards in $ than in Sars' figure (1895, pi. cxlv) of abyssi and is rounded below. 

 Side-plates 1-5 shallower than in abyssi. Postero-inferior angle of pleon segment 3 

 quadrate, with a minute point. Tooth on pleon segment 4 double, that on segment 5 

 slender, spine-like as in aculeata, Chevr., much longer than that on segment 4. 



Antenna 1 , accessory flagellum in $ ovate, about as broad as long, rather abruptly 

 narrowed at the apex where the seta is inserted. The breadth may not be natural, but 

 due to swelling in the preservative, though none of the other appendages show any 

 undue swelling. 



