South African Crustacea. 29 



GEN. SCLEEOCEANGON, 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. 



SCLEEOCEANGON BELLMAELEYI, 11. 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, Ceraphilus 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 Cheraphiius. 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. 



