320 Annals of the South African Museum. 



The most interesting feature of the material herein dealt with is the 

 presence of 2 species, heretofore only known from the North Atlantic, 

 namely, Sphyrapus malleolus N. & S. and Ayathotanais rnyalji Hansen. 

 Other examples of " bipolarity " among the Isopods and Amphipods 

 have already been recorded in previous papers. 



The specimens of these 2 species were sorted out from about 120 c.c. 

 of plankton taken in " coarse tow-net on beam-trawl, Cape Point N. 

 89 E. distant 36 miles, 700 fathoms, August 20, 1903." This small 

 quantity of material contained, besides numbers of minute Grateropods, 

 Pteropods, Chaetoguaths, larval Polychaets, Ostracods, Copepods and 

 many Amphipods, the following species of Isopods : 



Apseudes australis n. sp. . . .2 specimens. 



Sphyrapus malleolus N. & S. .3 ,, 



Agathotanais ingolfi Ha'nseu . 1 ,, 



Gnathia sp. ..... 4 ,, 



Neoarcturus oiidops Brnrd. . . 48 ,, 

 Haploniscus dimeroceras n. sp. . .68 ,, 



Eugerda sp. . . . . .2 ,, 



Macrostylis spiniceps u. sp. . .1 ,, 



Rhabdomesus bacillopsis n. sp. . .2 



Ih/chthonos capensis n. g. et sp. . 6 ,, 



Pseudomunnopsis beddardi (Tatt.) .5 ,, 



Ih/arachna affinis n. sp. . . .4 ,, 



,, crassiceps u. sp. . .2 



Eurycope sulcifrons n. sp. . .10 ,, 



quadrata n. sp. . . 9 



,, fusiformis n. sp. 3 ,, 



Of these, HaploniscMS, Eugerda, Rhabdomesus, Ilychthonos, Pseudo- 

 vmnnopsis, Ilyarachna and Eurycope are genera new to the South 

 African region ; and the 2 specimens of Rhabdomesus are the first 

 complete specimens discovered since the " Challenger " obtained the 

 first fragmentary examples of the genus. 



On the previous day the " Pieter Faure " had dredged in nearly the 

 same locality Psendatithvra lateralis Richardson, an aberrant Anthurid 

 only known from deep water off the West African coast. 



The haul on August 20 was probably often surpassed as far as 

 actual number of species is concerned, but scarcely in respect of 

 interest and importance. It shows what vast possibilities still remain 

 for increasing our knowledge of the fauna of South Africa, especially 

 of the denizens of the deep water off the Cape Point. 



In this connection the remarks made by Hansen * in discussing the 



* Dan. Ing-olf Exp. vol. 3, 3 ; Crust. Malacostr. 2, p. 3, 1913. 



