General Catalogue of Soiitli African Crustacea. 291 



Gen. STENOCIONOPS, Leach. 



1823. Stenocionojjs, Leach. In Desmarest, Diet. Sci. Nat., vol. xxviii., 



p. 266. 

 1825. Pericera, Latreille, Encycl. M6th., Hist. Nat. Insectes, vol. x., 



p. 699. 

 1897. Stenocionops, Rathbun, Proc. Biol. Soc. Washington, vol. xi 



p. 157. 

 1901. S., Rathbun, Bull. U.S. Fish. Coram, for 1900, vol. ii., p. 72. 

 The synonymy of this genvxs is due to Miss Rathbun, who 

 has pointed out that the Stenocionops of Latreille is distinct 

 from the earlier Stenocionops of Leach. Alcock divides the 

 MaiinaB (my family Mamaiidae) into three alliances, Maioida, 

 Stenocionopoida, and Periceroida, names which are no longer 

 tenable, now that the genus Maia in the first has become 

 Mamaia, Stenocionops, Latreille, in the second has been 

 changed to Ophthalmias, Rathbun, and Pericera, Latreille, 

 in the third has fallen as a synonym to the true 

 Stenocionops of Leach. 



Stenocionops fubcata (Olivier). 

 1791. Cancer furcatus, Olivier, Encycl. Meth., Hist. Nat. Insectes, 



vol. vi., p. 174. 

 1804. Cancer cornudo, Herbst, Krabben und Krebse, vol. iii., pt. 4, 



p. 6, pi. 59, fig. 6. 

 1834. Pericera cornuta, Milne-Edwards, Hist. Nat. Crust., vol. i., 



p. 335. 

 1886. P. c, Miers, Challenger Brachyura, p. 76. Simon's Bay, 



18-36 m. 

 1901. Stenocionops furcata, Rathbun, Bull. U.S. Fish. Comm. for 



1900, vol. ii., p. 73. 

 Desmarest, Consid. g6n. Crust., p. 153 footnote, 1825, makes 

 Maia taurus, Lamarck, the type of Stenocionops, Leach, adding 

 that M. Latreille refers to it the Cancer corundo of Herbst. 

 Corundo is a misprint for cornudo, of which species Maia taunts 

 is a synonym. This is recognised by Latreille under Pericera, 

 Regne Animal, 6d. 2, vol. iv., p. 59, 1829, but on the next page, 

 under Stenocionops, he declares that Desmarest was in error m 

 citing Maia taurus as type of the latter genus, without any 

 allusion to Desmarest's statement that Latreille himself had 

 referred Cancer cornudo to it. Latreille in 1825 and 1829 took 

 Cancer cervicornis, Herbst, as the type of Stenocionops. 



