MACEOMA. 217 



SiKKiM : Mungphu ; Assam : Silhet, Patkai Mts. 

 Type in the British Museum. 



The British Museum contains a single specimen from each oi' 

 the above locaHties. 



Genus MACROMA. 



Macroma, G. ^- P., Monogr. Cet. 1833, p. 35 ; Westw., Thes. Ent. 

 Oxon. 1874, p. 8 ; Lacord., Gen. Col. iii, 1856, p. 543. 



Type, Macroma cognata, Schaum (S. Africa). 



Range. Africa and Tropical Asia. 



Body more or less boat-shaped, very compact, convex above, and 

 extremely smooth and shining above and below. Legs, like the 

 rest of the body, almost devoid of hairs, the front tibiae bidentate 

 and all the tarsi very short, with extremely close-fitting joints, of 

 which the basal one is almost concealed. Clypeus simple and 

 moderately long, gently curved in front, without reflexed margin, 

 and curving downwards at the sides. Mandible loug and very 

 sharp at the extremity. Lobes of the maxilla forming two long 

 sharp teeth. Mentum either (1) broad, flat and slightly emarginate 

 in front, or (2) very protuberant beneath, the front edge forming 

 a flat vertical surface, straight, or slightly prominent in the middle 

 of the upper edge. Prothorax narrow in front, not margined at 

 the sides, and straight at the basal edge or angularly prominent 

 in the middle. Scutellum small and very acute. Elytra without 

 stride or costfe, very deeply cut away at the sides behind the 

 shoulders, with the apical margins separated. There is a fine 

 sinuated or jagged raised line crossing the elytron transversely a 

 little before the end. The pygidium has a very sharp posterior 

 edge, is not pointed at the end, and its dorsal surface is longitudi- 

 nally carinate at the middle. Fifth ventral segment broad. 

 Sternal process very slightly prominent, flat and a little dilated in 

 front of the middle coxae. 



S • Abdomen strongly arched and longitudinally channelled 

 beneath. Hind tarsi longer than in the female. 



Keg to the Species. 



1 (2) Mentum vertically flattened javanica, G. & P., p. 218. 



2 (1) Mentum horizontally flattened. 



3 (6) Scutellar region not depressed. 



4 (5) Elytra black melanopus, Schaum, p. 219. 



5 (4) Elytra yellow and black lanthorrhina, Hope, p. 219. 



6 (3) Scutellar region much depressed. 



7 (8) Prothorax black insignis, Gestro, p. 220. 



8 (7) Prothorax red superba, V. d. Poll, p. 221. 



