South African Crustacea. 67 



notch of each division, and two spines near each outer margin, with 

 a feathered setule near the upper one. 



The specimen figured measured 7 mm. in length. Another 

 specimen, measuring only 4-5 mm., had the marsupial plates less 

 developed and the telson less narrowed apically. 



Locality. Table Mountain E. 41 miles ; depth, 245 fathoms ; 

 bottom, green sand. The specific name, from dyicde (hook), and vwroe 

 (back), refers to the dorsal process on the fourth segment of the pleon. 



One specimen presents an appearance probably abnormal. The 

 upper hind margin of the third pleon segment was in contact with 

 the telson. When these parts were pulled asunder it was found 

 that all the three terminal segments of the pleon were enclosed 

 within the third segment, which showed through its pellucid integu- 

 ment the dorsal outline of the fourth in its natural condition, that is, 

 with a rounded boss, deep cavity, and uplifted triangular process. 

 The segments resisted endeavours to draw them into the open in a 

 way that proved their position to be no result of accidental intrusion. 

 The specimen measured 4 mm. from front of head to end of third 

 pleon segment. The principal flagellum of the first antennae is 

 six-jointed, the flagellum of the second nine-jointed. 



GEN. AMARYLLIS, Haswell. 



1880. Amaryllis, Haswell, P. Linn. Soc. N.S. Wales, vol. iv., p. 253. 

 1906. Amaryllis, Stebbing, Das Tierreich, Arnphipoda, p. 23. 



Dr. Chilton has recently pointed out that the species which 

 he described in 1885 as Glycerina affinis is in fact Amaryllis 

 macrophthalmus , Haswell. 



AMARYLLIS MACROPHTHALMUS, Haswell. 

 1880. Amaryllis macrophthalmus, Haswell, P. Linn. Soc. N.S. 



Wales, vol. iv., p. 253, pi. 8, fig. 3. 

 1885. Glycerina affinis, Chilton, P. Linn. Soc. N.S. Wales, vol. ix, 



p. 1036, pi. 47, fig. 1, a, b. 

 1902. Amaryllis macrophthalmus, G. M. Thomson, Ann. Nat. Hist., 



Ser. 7, vol. x., p. 463. 



1905. Amaryllis macrophthalmus, Chilton, Tr. N.Z. Inst., vol. xxxviii., 



p. 267. 



1906. Amaryllis macro phthalma, Stebbing, Das Tierreich, Arnphipoda, 



p. 24. 



The report on this species in the Challenger Amphipoda was based 

 on a very small and obviously young specimen from Patagonia, com- 



