12 Mr. H. W. Bates on Coleoptera 



A large series of examples, showing no gradations towards 

 the similar but much larger 0. ramosus. In Assam the species 

 occurs as a slight variety, rather more brassy in colour, with 

 stronger thoracic punctures, and the interstices of the elytra 

 distinctly convex. 



Onthophagus kuluensis, n. sp. 



Allied to 0. orientalis, and similar to it in the armature of the head in 

 the male, but smaller, glabrous, and very finely sculptured. Obscure brassy- 

 black, moderately shining. Thorax evenly ocellate-punctulate, immarginate 

 at the base with triangular, subdepressed, median projection. Elytra de- 

 pressed near the sciitellum, very finely striated ; striae distantly and faintly 

 punctulate ; interstices plane, sericeo-opaque, very finely punctulated. Py- 

 gidium with a few distant setiferous punctures. Antennae, palpi, and tarsi 

 pitchy-red. 



(? major. Head impunctate, polished ; clypeus broadly trapezoidal, with 

 strongly-reflexed obtuse apex and sinuated sides ; clypeal carina strongly 

 elevated and straight from side to side ; lamina of the vertex elevated, 

 oblique ; middle of upper margin strongly bowed forward, each end with an 

 erect, but flexuous, acute horn. Thorax dilated anteriorly, the front steeply 

 inclined but scarcely retuse, smooth. Anterior tibiae much elongated, flexuous, 

 with much produced inner apical angle. 



5 . Head rather closely punctured, strongly bicarinated ; clypeus similar 

 in form to the male, but apex much less reflexed. Thorax with shorter de- 

 clivity in front, protuberant in the middle of the summit. 



$ minor. Lamina of the vertex much less elevated, and with little trace 

 of the anterior projection ; horns short, head punctured. Thorax with only 

 slight anterior declivity and protuberance. 



3' effeminatus. Lamina of the vertex rudimentary, unarmed, upper edge 

 faintly trinodose. Head punctured. Long. 7 — 9 miUim. 



Very numerous examples. 



Onthophagus concolor, Sharp, Journ. As. Soc. Bengal, 1878, 



p. 170. 



The following is a detailed description of this species, founded 

 on a good series of examples : — 



Biack above, opaque in front, aenescent, shining, beneath polished ; apex 

 of the palpi and claws reddish ; clypeus subsemicircular, apex reflexed, 

 obtusely truncated and subsinuated, surface punctured with larger punctures 

 intermixed ; gense separately and slightly rounded. Thorax with sides 

 slightly sinuated near the prominent and subfalcate anterior angles, and 

 behind romided to the base, the latter obsoletely margined and very slightly 

 angular in the middle ; surface very sparingly punctured, each puncture with 

 a short black bristle. Elytra plane above, faintly crenulate- striated ; inter- 

 stices flat, finely shagreened, and sparingly setiferous-punctulate. Pygidium 

 shagreened and very sparsely punctured. Long. 7^^ — 8i millim. 



$ major. Front smooth and without carina ; occiput with a moderately 

 long, nearly erect, horn, gradually widened below to the base. Thorax in 

 front oblique, subretuse in the middle, smooth. 



^ minor. Same as ^ major, except that the occipital horn is reduced to 

 a moderately prominent tubercle. 



$ effeminatus. Same as ^ major, except that the short obtuse occipital 

 ridge is without horn, and the thorax is convex and punctate to the front 

 margin. 



? major ? Clypeus with an arcuated carina not prolonged to the sides ; 



