464 



Annals of the South African Museum. 



of Olivier's specific name will not be unreasonable. It anticipates 

 indicus by several years. 



The male specimen of which the petasma is figured has six 

 ventral spines on the rostrum ; the total length of the specimen 

 is a little under 4 in., the carapace with rostrum measuring 

 50 mm., the sharply carmate sixth pleon segment 15 mm. and the 

 sulcate telsoii 14 mm. The somewhat larger female specimen, 

 from which all the other figures are drawn to a uniform scale of 

 magnification, has only five ventral spines on the rostrum. The 

 greater prolongation of the rostrum in young as compared with 

 older specimens may be correlated with some requisite of defence 

 which ceases with increasing size and strength. 

 Locality. Cape Point, N.E. by E. 36 miles; depth 650 fathoms, 



green mud. A 209. 



The species is also recorded from " Umgeni Eiver," 207, and from 



" Umgeni Lagoon," Durban, taken by T. L. "Huston. AGr 1087. 



INDEX. 



A. 



Achaeopsis 453 



Actaea . .... 455 



actaeif ormis ( Maxillothrix), pi. cix 457 

 Actea andamanicus (Homola) . 457 

 affinis (Eucrate), pi. ex . . 458 

 andamanicus (Homola) . . 457 

 Axius ...... 457 



B. 



Blastidae .... 

 Blastus ..... 

 Brachyura 

 brayerii (Ebalia) . 

 bryerii (Ebalia) 



C. 



Campylonotus 



Catometopa . 



crassimanus (Microprosthema) 



Cyclometopa . 



. 454 

 . 454 

 . 453 

 . 459 

 . 459 



457 

 458 

 462 

 455 



D. 



diadumena (Ebalia) . - 460 



Dorynch.ua . . 453 



Dromiidae . . 462 



E. 



Ebalia . . - 459 

 elegans (Eurynome), pi. cviii . 454 



ensifer (Eumiersia) . . . 462 



Eucrate . . 458 



Eudromia . 4(52 



Eumiersia . . . 462 



Euvycarcinus ... 456 



Eurynome . . - 454 



F. 



fascicularis (Blastvis) . . 454 



fascicularis (Pisa) . . . 454 



frontalis (Eudromia) . . . 462 



