144 Annals of the South African Museum. 



new name in place of the preoccupied Platyaspis, Sars, 1870. It 

 contains the species P. typicus (Sars), 1870, and P. brachyurus 

 (Zimmer), 1907. The species orbicularis, which Dr. Caiman 

 referred to Platyaspis in 1905 and to Paralamprops in 1912, may, 

 perhaps, be transferred to a new genus Platytyphlops to be sub- 

 sequently introduced. The suggestion made by Professor Sars in 

 1900 that Chalawstulis, Norman, 1879, might be referred to the 

 Platyaspidae (now Platysyrnpodidae) will not suit the character of 

 the first maxillae in Norman's Chalarostylis elcgans, since Dr. Caiman 

 has observed that those appendages have a normal bisetose palp. 



GEN. HEMILAMPKOPS, Sars. 



1882. Hemilamprops , Sars, Forh. Selsk. Christian., 1882, pp. 11, 55. 

 1899. H., Sars, Crustacea of Norway, vol. hi., p. 21. 



As this is at present the only genus assigned to the family, the 

 family characteristics may suffice to define it. The species included 

 are H. roseus (Norman), 1863 ; H. crixtattix (Sars), 1870 ; H. uniplicatus 

 (Sars), 1872 ; H. assimilis, Sars, 1882 ; H. normani, Bonnier, 1896 ; H. 

 pellucidus, Zimmer, 1908. 



HEMILAMPKOPS PELLUCIDUS, Zimmer. 



Plate LI I. 



1908. Hemilamprops pellucida, Zimmer, Deutsch. Tiefsee-Exp., 

 vol. viii., pt. 3, pp. 171, 172, pi. 39, figs. 53, 54, pi. 40, 

 figs. 55-59. 

 1910. H. p., Stebbing, S.A. Crustacea, pt. 5, p. 415. 



The specimens here described and figured, if not in absolute agree- 

 ment with the young female and still younger male, examined by 

 Dr. Zimmer, do not admit of any real doubt that they belong to the 

 same species. 



The integument is pellucid, delicate, microscopically scabrous. 

 Pseudorostral lobes short, subacute, with serrate edges. Carapace 

 in both sexes rather deep, the small triangular eyelobe without 

 lenses, the medio-dorsal line carrying four or five forward-pointing 

 denticles, immediately followed by a nearly level line of twenty 

 denticles reaching back beyond the middle of the carapace and suc- 

 ceeded by a groove between the inflated branchial regions. Pedi- 

 gerous segments combined shorter than the carapace. Pleon longer 

 than those segments and carapace together. Telson with three long 

 apical spines, its denticulate margins carrying six to eight pairs of 



