348 Mr, A. Murray on Coleoptera frura Old Calabar. 



verse groove between the antennse. Thorax nearly as in O. mgi- 

 ceps, but smoother and with a few large punctures irregularly 

 dispersed in the wrinkles or scratches which extend ii-regularly 

 over the disk, but principally in a transverse direction ; the 

 dorsal line is well marked, but does not reach to the anterior 

 margin ; posterior angles obtuse. Elytra three times the length 

 of the thorax, bioader than the thorax, but not so much so as 

 in O, rugiceps ; much more finely aciculated than in that species, 

 so that they are more shining and have less of a silky gloss ; 

 they are less deeply punctate-striate; the interstices almost flat, 

 sparsely punctate, but more closely and deeply towards the sides 

 and apex ; these punctures are larger than the similar ones in 

 O. rugiceps ; there are also a number of delicate scratches or 

 wrinkles, which extend here and there more or less transversely 

 or obliquely across the difierent interstices ; the space between 

 the sixth and seventh strise is narrowest, widening a little towards 

 the base, and more so towards the apex ; in other respects nearly 

 as in O. rugiceps. The under side is ferrugineo-piceous, the 

 sides of the body with an occasional puncture, and the meta- 

 thoracic episterna deeply wrinkled obliquely ; the abdomen very 

 finely aciculated, with two punctures on each segment in the 

 middle and two on each side. Legs dark piceous, thighs lighter. 

 I have named this species after my able and amiable friend, 

 well known to all British entomologists, the llev. Hamlet Clarke. 



3. O. pinguis, xmh.\. 



Latus, niger, nitidus ; antennis, trophis, corporc subtus pedi- 

 busque ferrugineo-piceis ; capitis vertice et fronte profunde 

 punctatis ; thoracc ut in 0. Clarkii, sed rugis magis reticulatis, 

 linea dorsali profunda; scutello polito; elytris lepidissime 

 aciculatis, leviter striato-punctatis, interstitiis fere impunctatis 

 sed sparsim et leviter punctatis inter strias quintas et sextas, 

 sine lineis transversis lepidis ; subtus politus ; abdomine fere 

 ut in O. Clarkii. 



Long. 5i lin., lat. 2| lin. 



Broader for its size than either of the two preceding species ; 

 black, shining. Head coarsely and deeply punctate on the vertex 

 and in front, not punctate on the sides behind the eyes ; a some- 

 what quadrate smooth patch also in front in the centre behind the 

 epistome ; a fovea on each side in front, between which is a trans- 

 verse line, which forms the anterior margin of the smooth space ; 

 in front of this line is the epistome, which is impunctate, except 

 by four deep punctures in a transverse groove which traverses 

 it ; antenna and parts of the mouth ferrugineo-piceous. Tho- 

 rax nearly as in O. Clarkii, except that the wrinkles are not so 



