232 



Memoirs of the Indian Museum. 



[Vol. Ill, 



'^~ Kobo, Abor Country, 400 ft. 



^""■^^g^" Janakmukh, Abor Country, 600 ft. 



^^^ (Spirit specimens) Rotung, Abor Country, 1400 ft. 

 320|9 3274 Upper Rotung, Abor Country, 2000 



ft. 

 ?^ Kalek, Abor Country, 3800 ft. 



"^ Cachar 



-1 

 i 



I 



3275-6 ( 



/ 9129 9131 9133 92« 

 j X ' 1 ' X ' 1 

 "J 9253-S 9265-6 3288-91 

 L 1 ' 1 ' 19 

 4144-7 670 704 709 

 13 ' 14 ' 1 

 711 3275-6 



Sibsagar 



Khasi Hills 



. Tavoy 



^ Between Thingannyinauug and 

 " V Sukli, Dawna Hills, 900-2100 ft. 

 . Sukli, Dawna Hills, c. 2100 ft. 



) S. W. Kemp. 



J. Wood-Mason. 



Stoliczka bequest, 



S. E. Peal, Moti Ram. 



Shillong Museum. 



Museum Collector. 

 If. H. Gravely. 

 F. H. Gravely. 



Mr. Steven's collection includes a specimen collected by Mr. W. H. Webb at 

 Gopaldhara in the Rungbong Valley, Darjeeling District, and several from Silonbari 

 at the base of the N. Lakhimpur Hills. The Berlin collections include specimens from 

 Formosa (numerous localities), Hainan, S. Palawan, Tonkin, and Catchin Couri. The 

 British Museum collection includes also specimens from Sin L,um, and Cambodia. 



Description. — Length 33-49 mm. Lahrum as in A. leavicollis. Lamellae of 

 antennae much as in A. . leavicollis in small specimens,* often proportionally shorter and 

 thicker in large ones. Mandibles also much as in /I. leavicollis in small specimens, the 

 recurved upper edge behind the left upper tooth often broader, especially in front in 

 larger specimens, sometimes forming a stout secondary tooth in the largest of all, its 

 outer margin concave rather than convex. Mentitm as in A : leavicollis. Anterior angles 

 of head much more prominent than in A. leavicollis in most small, but very little more 

 prominent in most of the largest specimens, almost always directed more or less inwards 

 in the former, in which, consequently, the supra-orbital and supra-occipital ridges 

 together appear to enclose more than half a circle; in the latter, the area enclosed by 

 the supra- orbital and supra-occipital ridges usually resembles almost and often quite as 

 perfect a semi-circle as in A . leavicollis ; left outer tubercle somewhat less variable, 

 usually rather long and .slender, parallel sided, and scarcely forked ; sometimes broader 

 and shorter ; rarely with even the faintest trace of an external enlargement ; right outer 

 tubercle variable as in ^. leavicollis, usually more pronouncedly bidentate with the 

 two teeth somewhat nearer together ; frontal area often very short and broad , especially 



' Of these specimens only the head and prothorax, in one case together with a single elytron, were . 

 found. 



■^ In one specimen from Sikkim (No. '^) there are only five lamellae altogether, that of the sixth 

 segment being suppressed or possibly reduced and fused with that of the fifth. I have seen no trace 

 of a lamella on the fourth segment of any specimen. 



