430 ]Mr. G. J. Arrow on new 



Wnlkor, was described from a female of 0. ajnnifer, F., is 

 not correct. The types of both are in the British Museum 

 collection and the two species are quite distinct, although 

 licarly related, belonging to the group in Tvhich the male has 

 a single very long and slender horn curving backwards. 

 0. sjiitn'fer, F., is steel-blue, with rugose elytra, and O. tur- 

 badis, Walker, is coppery, with the elytra finely punctured. 



{d) Head of the male witliout liorn. 

 Onthophagus cceruleicoltis, sp. n. 



Caerulens, subtus nigro-cteruleus, pedibus piceis vel rufo-piceis ; 

 antennis ehtrisque fla^^s, honim sutura fasciisqne duabus trans- 

 Tcrsis interruptis uigris ; capita piano, dense rugoso, antice 

 producto, baud acute, margins postico arcuato, medio fere 

 angulato ; prothoraee valde gibboso, nbique dense granulate, 

 postice lebate, fere angulato, lateribiis valde arcuatis, angulis 

 anticis retundatis, posticis ebsoletis ; elytris subtiliter striatis, 

 iuterstitiis planis, rugose punctatis et minuti&sime setiferis ; 

 pygidio grosse punctate ; corpore subtus ubique punctate, parce 

 griseo-hirte. 



Long. 5-5-8-5 mm. 



Hdb. S. India, Dharwar, Belgaum. 



Metallic blue, darker beneath, w-ith the legs piceous or 

 piceous-red, the antennae testaceous and the elytra yellow, 

 with the suture and two transverse rows of spots black, the 

 spots of the posterior row sometimes coalescing into an 

 irregular band. 



This is a small species, moderately elongate and very 

 convex. The head is small, flat, finely rugose, and without 

 horn or carina, and the clypeus is bluntly produced in the 

 middle. The posterior margin of the head forms a sharp 

 edgCj but is not produced. The prothorax is very globose, 

 finely granulated, and without arniatuie or excavation, with 

 the sides strongly rounded, the posterior angles obliterated, 

 and the base lobed but scarcely angulated, the lobe indicated 

 by a slight impression on each side. The elytra are finely 

 striated and the interstices rugosely punctured and very 

 minutely setose. The pygidium and underside are coarsely 

 jninctured and clothed with short greyish hairs. The front 

 tibia3 are broad and strongly but very bluntly quadiidentate. 

 The sexes are apparently alike. There is no trace of horn 

 or carina, but a very minute tubercle sometimes traceable 

 near the middle of the head probably indicates the male. 



This species and the following one belong to a group of 

 which several have been described from Tropical Africa, and 

 of which 0. maculatus, F., is the type. The elytra are less 

 rugose than is usual in this group. 



