272 STHENIAS GRISATOR. 



NOTE XXVI. 

 ON THE MALE SEX OF LAMIA GRISATOR, EABR. 



BT 



C. RITSEMA Cz. 



This species , which inhabits India (Tranquebar) i), is 

 the type of de Castelnau's genus Sthenias , but, according 

 to the description of the mandibles and antennae, only 

 the female sex was known to that Author, and even to 

 Lacordaire at the time he wrote the 2nd part of the 9th 

 volume of his ))Genera des Coléoptères," published in 1872. 



In the Leyden Museum are two male specimens of this 

 species from Tranquebar (from the collection of Mr. Raye 

 van Breukelerwaard), and these have the outer margin of 

 the basal half of the mandibles thrown up and prolonged, 

 so as to form a tooth-like , nearly perpendicular , appen- 

 dage. The antennae reach a little beyond the apex of the 

 elytra and are fringed all along their under surface. The 

 scape is shorter than the 3rd joint, the 3rd to 10th joint 

 gradually decrease in length , the 1 1th however one and 

 a half as long as the 10th , slightly curved , the apex 

 pointed , not hooked. The hind margin of the last ventral 

 segment rounded , gently emarginate in the middle. 



The Sumatran specimen regarded by Pascoe (Longicornia 

 Malayana, p. 160) as belonging to Sthenias grisator F. is 

 quite distinct from it. I propose to call this species, of 

 which the Leyden Museum possesses two male specimens 

 from Serdang: East Sumatra (Dr. B. Hagen), Sthenias 

 Pascoei. The mandibles in this species as well as in 

 Sthenias franciscanus Thoms. (from Java and Sumatra) are 

 simple in the male sex. 



1) The African Lamia cylindrator Fabr. is specifically distinct from it. — I 

 believe that Xylorhiza hieroglyphica Redtb. (Reis. Novara. Coleopt. p. 178; 

 pi. 5, f. 2) from Java, also belongs to the genus Sthenias. 



JSTotes from tlie Leyden IMuseuni, "Vol. X. 



