Mr. A. Murray on Coleoptera from Old Calabar. 91 



sideways, tliey are scarcely broader than when viewed from above, 

 and terminate in a point curved upwards ; there is no tubercle 

 beneath them, nor on the upperside are there two on each side 

 of the inner lower margin, as is the case with the female of this 

 species. On the upper margin of the curve of the horns the 

 teeth or tubercles are more numerous and larger than in B.pro- 

 trudens. The scutellum does not differ from that of protrudens. 

 The elytra differ in the costse being almost absent, the striation 

 straighter and less oblique, and in the apex of each being pro- 

 longed into a rather obtuse triangular end. I see no difference 

 in the underside. 



Female. Very nearly the same as the male, 

 but it is distinguished by the elytra each ter- i'l(^t 

 rainating in a prolonged knob. The head is 

 the same. The thorax is scarcely so coarsely 

 tuberculate, and the disk is smooth and 

 only shows a sculpture of the form of ad- 

 pressed tubercles, instead of having flat-topped smaller tubercles 

 present; and the dorsal longitudinal line is not so deep as in 

 the male : the horns of the projecting angles are longer and 

 less incurved; they have not a tubercle on the underside as in 

 B. protrudens, but two on the inner margin of the upperside, 

 one a little behind the point, and the other on the front margin, 

 just before where the curve of the horn begins, with a mai'ginal 

 edging uniting the inner two ; the hollow between the horns is 

 greater than in the male. The elytra are, if anything, more 

 deeply punctate, and at the apex, instead of a simple obtuse end, 

 each elytron is prolonged into a rather large conical knob, 

 smooth and shining, a little turned upwards and outwards. In 

 other respects the same description will apply to both. 



I state the distinction of the sexes on the authority of Imhoff. 

 Until I saw his description I had regarded the male and female 

 as distinct species. 



I have only seen three specimens. 



3. Bostrichus brevicornutus. 



B. producto similis ; elytris apice rotundatis /■%! ^t^ 



dignoscitur. fjr| fy""! 



Long. 6-8 lin., lat. If -2 lin. 



Very like B. productus (male), but has the 

 elytra without any prolongation. The head 

 and thorax are almost identical with those of that species, while 

 the punctuation is more like that of B. protrudens, the striation 

 being, as in it, more oblique than in B. productus. The elytra 

 are rounded at the apex, and have the apical marginal edging 





