204 Memoirs of the Indian Museum. [Vol. Ill, 



Parietal ridges of head short and laterally truncate, being separated 

 from supraorbital ridge by a deep hollow ; insects strongly and 

 i) more extensively punctured .. .. .. .. Le/)^(i»/rtX', Kaup, pp. 251 



& 302. 

 Parietal ridges long, laterally continuous with supra-orbital ridges ; 

 insects sparsely and less extensively punctured . . . . Leptaiilacidcs, Zang. 



4. LIST OF SPECIMENS IN THE INDIAN MUSEUM COLLECTION, WITH 

 NOTES ON THOSE IN CERTAIN OTHER COLLECTIONS.' 



Localities are recorded as briefly as possible in this list. For further geographical 

 information regarding them, and also for all information regarding the synonymy 

 adopted here, the sixth part of this paper should be referred to. I have thought it best 

 to retain, for the present, all names already in use which can be applied to forms satis- 

 factorily distinguishable from their allies in the collection before me, even when (as 

 in the case of Ephisphenus comptoni and its varieties) there is evidence to show that 

 a larger series of specimens is almost certain to prove that the characters, which now 

 seem to be distinctive, are of no real taxonomic importance '. But as full species I 

 have only recognized forms differing in at least one constant and definite character, 

 or combination of characters, from every other form known to me. 



The descriptions refer only to the specimens before me, and the measurements 

 given for each species do not always show the total range in size indicated in the 

 descriptions of previous authors. 



Subfamily ^^L/lCOCyCL/A^^£. 



Genus COMACUPES, Kaup. 

 Comacupes cavicornis, Kaup. 



1. C. CAVICORNIS, Kaup, s. str. 



Regd. No. "^ '^^^f=^ Sinkep Island Moti Ram. 



Description. — Length 23-25 mm. Labrum about twice as wide as long, anterior 

 margin slightly concave, angles rounded, sides slightly convergent behind. Upper 

 tooth oi mandibles weak, obtuse; anterior ower tooth conical, usually truncate or 

 bifid at apex, that of left side partially fused to lower margin of lamelliform middle 

 lower tooth. Mentum hairy and coarsely punctured, with a strong median keel, 

 which is obliquely truncate behind and extends into a slight prominence in middle of 

 anterior margin. Head hairy and strongly punctured, except on supra-orbital ridges 

 and anterior margin ; central tubercle narrow (usually more so in front than behind), 

 pointed before and behind, hollowed out above, the upper margins of its raised sides 

 straight and usually somewhat elevated behind and dipping at an angle of about 120° 

 above the somewhat elongated anterior overhanging portion ; anterior margin of head 

 thickened, approximately straight except close to lateral sutures of frons on inner side 



^ See footnote 2 on preceding page. 



■^ A list of these collections will be found above, p. 



^ This has since been confirmed; see p. 2S2. 



