28 Annals of the South African Museum. 



Locality. Cape Point N.E. by E. f E. 38 miles ; depth, 750-800 

 fathoms ; bottom, green mud. 



Both Smith and Faxon suggest the possibility that P. nanus may 

 be only a dwarf deep-water variety of P. sculptus. 



TRIBE SCYLLAEIDEA. 



1893. Scyllaridea, Stebbing, Hist. Crust., Internat. Sci. Ser., vol. 

 Ixxiv., p. 191. 



This tribe, by Boas and many other writers called Loricata, 

 comprises the two families Scyllaridae and Palinuridae. Borradaile, 

 in his recent classification (Ann. Nat. Hist., Ser. 7, vol. xix., p. 407, 

 1907), retains the name Scyllaridea, but makes it one of the two 

 " super-families " in his tribe Palinura, the Eryonidea being the 

 other super-family. The Macron/res cuirasses of Milne-Edwards, for 

 which de Haan gives the Latin Loricata, included the Galatheidae 

 and the Eryonidae as well as the two families above mentioned. 



FAMILY SCYLLAKHLE. 



1837. " Scyllariens " (tribe), Milne-Edwards, Hist. Nat. Crust., vol. 



ii., p. 279. 

 1841. Scyllaroidea (fam.), de Haan, Crust. Japon., decas quinta, 



p. 148. 



1847. Scyllaridce, White, List of Crust, in Brit. Mus., p. 67. 

 1852. Scyllaridce, Dana, U.S. Expl. Exp., Crust., vol. xiii., pt. 1, 



p. 515. 

 1888. Scyllaridce, Bate, Challenger Macrura, Reports, vol. xxiv., 



p. 57. 

 1891. Scyllaridce, Ortmann, Zool. Jahrb., vol. vi., p. 38. 



1900. Scyllaridce, M. J. Eathbun, Proc. U.S., Nat. Mus., vol. xxii., 



p. 309. 



1901. Scyllaridce, M. J. Eathbun, U.S. Fish. Comm. for 1900, vol. ii., 



p. 97. 



1906. Scyllaridce, M. J. Eathbun, U.S. Fish. Comm. for 1903, pt. 3, 

 p. 896. 



The genera now assigned to this family are Scyllarus, Fabricius, 

 Scyllarides, Gill, Ibacus, Leach, Themis, Leach, Parribacus, Dana, 

 and Pseudibacus, Guerin-Meneville, with which Miers considers 

 Evibacus, S. I. Smith, to be synonymous (Pr. Zool. Soc. London, 



