52 Mr. A. Murray on Coleoptera from Old Calabar. 
and punctate. Elytra of the breadth of the thorax, rounded 
on the shoulder (a small longitudinal depression within), and 
more narrowly at the apex, smooth, green and more brilliant 
at the apex, with the suture bluish and depressed in the mid- 
dle at its posterior part. Legs smooth, of an ebony-black ; 
the four anterior thighs abruptly swollen, posterior elongated 
and club-shaped; posterior tibie long, flattened. Tarsi 
blackish, grey below, posterior clothed with a silvery ashy 
pubescence. 
I have only seen one specimen, which is in my collection. 
M. Chevrolat described this as a Litopus ; but the characters 
of that genus, as exposed by Prof. Lacordaire (Genera des 
Coleopteres, ix. p. 23), forbid its being ranked with it. It pro- 
perly belongs to the genus Callichroma: for example, one of 
the characters of Litopus is to have the thorax rounded on the 
sides, and without spine or tubercle, while in Callichroma it is 
tuberculate ; and the thorax of this species has thick and obtuse 
lateral tubercles or spines. e other characters also agree 
with those of Callichroma, and I have therefore removed it 
to that genus. 
LrroPus, Serv. 
Litopus glabricollis. 
Facie simillimus Callichromati episcopali, sed thorace differt 
i aniusculus, niger vel nigro-cyanescens ; capite 
nitido, supra viridi, subtus nigro ; antennis carinatis omnino 
ut in C. episcopali, pedibusque clavatis, nigro-cyaneis ; 
thorace subgloboso, supra planato, glabro, nigro-cyaneo, 
lateribus parum viridibus, lævissime sparsim acupunctato; 
elytris opacis, rugose punctatis, nigro-cyaneis, vitta lata 
communi postice attenuata et abbreviata virescente ; corpore 
infra cupreo et cupreo-viridi, densissime punctato, lanugine 
brevissima parum albida induto 
ong. 12 lin., lat. 2-23 lin. 
Exceedingly like Callichroma episcopale; scarcely any dif- 
ference can be noted in the antenne, the parts of the mouth 
the legs, and the elytra; but the head differs somewhat, and 
the thorax entirely. Flattened, narrow, and attenuated behind. 
Mouth, eyes, antenne, upper side of thorax, and legs black 
or bluish black; head, sides of thorax and scutellum green. 
Elytra blue-black, with a sutural stripe of green, broad in 
front, gradually attenuated behind, and terminating before 
reaching the Ee Head irregularly impressed and punctate, 
with three foldings in the middle between the eyes, and other 
irregular folds and grooves. large, at its widest 
Thorax 
nearly as broad as the base of the elytra, subglobular, flattened 
