I9I7-J 



»S. Kemp : Notes on Crustacea Decapoda. 



219 



Leander carinatus, Ortmann. 



1891. Leander longirosfris var. can')iatus, Oilmann, Zool, Jahrb., Syst., V, 



p. 521. ' 

 1902. Leander carinatus, Doflein, AbliandL niatli.-pliys. Klasse K. Bayer. 



Akad. Wiss., XXI, p. 639, pi. iii, fig. 8. 

 1914. Leander styliferus var. carinatus, Balss, ibid., Suppl. Bd. 11, Abh. 



10, p. 57 (? part only). 



Twenty-seven specimens from N. China^ all of which are un- 

 fortunately in very poor condition, appear to belong to this 

 species. L. carinatus was originally described by Ortmann in the 

 briefest possible manner from a much mutilated specimen obtained 

 in China and was regarded by its author as a variety of Milne- 



FiG. 6. — a, b. Leander styliferus, Milne- Edwards. 

 c, d. Leander carinatus, Ortmann. 

 a, c. Third peraeopod. b, d. Fifth peraeopod. 



Edwards' L. longirosiris (=/.. styliferus). If my identification is 

 correct there can be no doubt that the form is specifically dis- 

 tinct, though closely related to L. styliferus. L. carinatus may be 

 distinguished by the following characters : — 



(i) The basal crest of the rostrum bears from 6 to 9 (usually 

 7 or 8) teeth,' a number rather higher than is usual in L. styliferus. 

 The foremost of these teeth is much in advance of the hindmost 

 tooth of the ventral series. 



I Of twenty specimens one has 6 teeth on the basal crest, ten have 7 teeth, 

 tight have 8 teeth and one has 9 teeth. 



