40 Annals of the South African Museum. 



though it has the more numerous dorsal spines on the rostrum 

 and the more extensively developed flagella on the first and 

 second antennae. 



In our specimen the eyes have an unusual appearance, the 

 dark red cornea being mapped out into quadrangular areas of 

 different sizes, an effect due to the vicissitudes of captivity 

 and travel. The carapace has 8 teeth on the medio-dorsal 

 carina, the hindmost 3 very small ; it has 6 on the rostrum 

 dorsally and 8 very distinct ventrally with one or more among 

 the setules close to the orbit. The flagella of the first antenna 

 are elongate, distally of extreme tenuity ; the flagellum of the 

 second antenna is considerably over 100 mm. long. The two 

 second peraeopods are very unequal, and the fourth pair much 

 longer than the fifth. 



Locality. Buffalo Eiver, N. 15 miles (East London, Cape 

 Colony) ; depth 310 fathoms. A 1292. 



HETEEOCAEPUS ALPHONSI, Bate. 



1888. Heterocarpus alplwnsi, Bate, Eep. Voy. Challenger, vol. 24, 



pp. 629, 632, pi. 112, fig. 1, II, II". 



1891. ,, ,, Wood-Mason and Alcock, Ann. Nat. 



Hist., Ser. 6, vol. 7, p. 196. 



1892. ,, ,, Wood-Mason and Alcock, Ann. Nat. 



Hist., Ser. 6, vol. 9, p. 367. 

 1901. ,, ,, Alcock, Catal. Indian Deep-sea Ma- 



crura, pp. 103, 106. 



From other species of the genus Alcock distinguishes this 

 as having the third, fourth, and fifth pleon segments sharply 

 carinate, and each prolonged into a backward pointing tooth, 

 the other pleon segments not carinate, the sixth not twice as 

 long as the fifth and shorter than the telson. Length of the 

 South African specimen from tip of the long slender rostrum 

 to end of telson about 5 inches. The rostrum has 11 teeth on 

 the lower edge, above 9 teeth are spaced along the rostrum on 

 to the body of the carapace. 



Locality. Cape Natal N. by E. 24 miles (Natal) ; depth 

 440 fathoms. A 1291. 



HETEEOCAEPUS LAEVIGATUS, Bate. 



1888. Heterocarpus laevigatus, Bate, Eep. Voy. Challenger, vol. 24, 



p. 636, pi. 112, fig. 3. 



