Nexo Species of Heteromera. 325 



anterior border ; mentum coarsely rugose-punctate ; a few- 

 large rounded punctures behind the eyes and on the 

 cheeks ; neck finely and sparingly punctured ; prothorax, 

 including the flanks^ strongly punctured^ the punctures 

 large and rounded, more sparingly distributed on the 

 disc, more crowded on the sides ; longer than broad, 

 very convex or globose ; strongly rounded on the sides 

 to the constriction behind, thence rapidly expanding to 

 the hind angles ; not impressed down the median line ; 

 an oblong fovea or depression on the middle of the base, 

 within the margin ) scutcUum black, smooth ; elytra elon- 

 gate, sides nearly parallel, and feebly sinuous; punctate- 

 striate ; the punctures rather large, deep, rounded and 

 approximate ; the intervals convex and smooth ; meso- 

 and meta-pleurae and sides of metasternum punctured, 

 the punctures large and rounded : metasternum strongly 

 depressed in the middle, and, together with the abdomen, 

 transversely wrinkled and sparsely clothed with long hairs : 

 body beneath, legs, palpi, labrum, and three first joints of 

 antennas pitchy-black, shining; remaining joints of the 

 latter reddish-brown. 



Q. Length 7j — 8 lines: — differs from the c? in 

 having the head more densely and coarsely punctured 

 behind the eyes : the prothorax shorter, less convex, less 

 rounded at the sides, wider in front and behind, faintly 

 impressed down the median line, without the depression 

 in the middle of the base ; elytra less parallel at the sides, 

 a little expanded behind the middle : metasternum and 

 abdomen smooth, not transversely wrinkled, and hairless ; 

 the former convex, not depressed in the middle. 



Hah. — Sherboro Island : West Coast of Africa. 



I dedicate this most peculiar insect to the illustrious 

 author of the "Genera des Coleopteres/^ 



Family RHIPIPHORIDyE. 



Gen. AcosMus. 



(Dej. Cat. p. 239) ; Lacord. Genera, v. p. 625, note. 



Judging from an example in the Lafertean Collection 

 labelled " Aeosvius capevsis, Dej., " this species is certain- 

 ly identical with the Geoscopus murinus, Gerstack. Monog. 

 Rhipiphor. pp. 7, 8, plate, fig. 2. a. b. c. 



