te 
Mr. A. Murray on Coleoptera from Old Calabar. 91 
sideways, they 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 coste 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- 
minating 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 marginal 
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. 7 
I have only seen three specimens. 
3. Bostrichus brevicornutus. 
B. producto similis; elytris apice rotundatis 
dignoscitur. 
Long. 6-8 lin., lat. 12-2 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 
