﻿South African Crustacea. 29 



Gen. SCLEROCEANGON, G. 0. Sars. 



1885. Sclerocrangon, Sars, Norske Nordhavs Exp., vol. 14, Crustacea, 



vol. 1, p. 14. 



1886. „ S. I. Smith, Eep. U.S. Fish. Comm. for 1885, 



p. 652 (48). 

 1895. „ Faxon, Mem. Mus. Comp. Zool, vol. 18, 



p. 132. 

 1910. ,, Kemp, Fisheries, Ireland, Sci. Invest., 1908, i. 



[1910] , pp. 135, 139. 

 1914. Crangon {Sclerocrangon), Balss, Abhandl. K. Bayer. Ak. Wiss., 

 Suppl. vol. 2, pt. 10, pp. 62, 65. 



Sclerocrangon bellbiarleyi, n. sp. 

 Plate LXXIV. 



The new species is closely allied to two earlier members of the 

 genus. The first of these was named Pontophilus jacqueti by A. 

 Milne-Edwards in 1881, CeraphiHs agassizii by Smith in 1885, 

 Sclerocrangon agassizii by Smith in 1886, S. jacqueti by Faxon in 

 1895, and more decidedly by Kemp in 1910. The name Ceraphilus 

 was no doubt an oversight for Cheraj^hilics. The second allied 

 species is Sclerocrangon procax, Faxon, 1895. In the sculpture of 

 the carapace the new species shows general agreement with its 

 allies, but with some differences of detail. Thus the supra-ocular 

 teeth are not produced nearly as far as the short rostrum, the large 

 ascendant process over the rostrum is common to both sexes, the 

 smaller median process behind it is set more forward than in either 

 of the other species, and so is the little marginal tooth to the rear of 

 the large antero-lateral processes. In our specimens the pleon is 

 without medio-dorsal carina except a faintly expressed blunt one on 

 the sixth segment, which has its lateral carinae well marked. In 

 these respects, however, they agree with the variety of S. jacqueti 

 which Kemp has figured. From that species they differ in having, 

 like S. procax, a longer second joint to the first antennae. The 

 scale of the second antennae is narrow in S. procax, apically bifid 

 into two processes, both figured as acute. In the other two species 

 the scale is broad, in S. jacqueti having a normal tooth with no bifid 

 appearance, such as is produced in the new species by a tooth with 

 a broad base and a serrate inner margin the tip of which is on a 

 level with the setose rounded part of the apical margin. 



The eyes are not very small, with no perceptible tubercle, dark 

 red as preserved. 



