General Catalogue of South African Crustacea. Ml 



side of a small finely pectinate plate apparently belonging to the 

 epistome. 



The broadly rounded cutting edge of the mandible has a little 

 tooth projecting from its centre ; the palp is small. Of the biseviate 

 branchial plumes shown on the plate, the larger couple probably 

 belonged to the third maxilliped, the smaller to the cheliped, two 

 arthrobranchiae being the proper complement for each of these 

 appendages in the Oxystomata (see Ortmann, Zool. Jahrb., vol. vi., 

 p. 551, 1892). 



The chelipeds are remarkable, not only for their place of insertion 

 far in front of the other legs, but also from the wide gap which 

 separates the long finger at its insertion from the strange, somewhat 

 crooked, doubly dentate thumb. The finger is curved at the end, 

 and is also furnished with teeth, which are less conspicuous than 

 those of the shorter thumb. All the peraeopods are more or less 

 granular and hairy, the fingers in the last four pairs being as long 

 as the preceding joint. 



In the largest specimen the carapace measured 6 mm. in length 

 by 10 mm. in breadth ; the length of the back, including the first 

 four segments of the pleon, being 11 mm. 



All three specimens were females. The specific name alludes to 

 the wide disjunction between the first and second peraaopods. The 

 readiness with which specimens disjoin their limbs is, unfortunately, 

 a character common to many species. There were, however, six of 

 the quaint chelipeds to be allotted to the three specimens. 



For No. 240, the locality of this species was stated by Dr. Gilchrist 

 to be " Cape Natal N.W. W. 5J miles ; 62 fathoms," or 113 m. 



The generic name, compounded of the Latin nasns, a nose or 

 Ness, and the local designation Natal, identifies this novelty with 

 Cape Natal, where it was discovered. 



BRACHYURA ANOMALA. 



1839. Dromiacea, de Haan, Crustacea Japonica, decas quarta, p. 102. 



1899. Bracliynra anomala, Alcock, Deep Sea Brachyura of Investi- 



gator, p. 6, and Dromiacea or Brachyura primigenia, 

 Alcock, Journ. Asiat. Soc. Bengal, vol. Ixviii., pt. 2. 

 p. 124. 



1900. Brachyura anomala (part), Stebbing, S.A. Crustacea, pt. 1, 



p. 22. 



1902. B. a., Stebbing, ibid., pt. 2, p. 18. 

 1905. B. a., Stebbing, ibid., pt. 3, p. 68 



