Zoological Society. 



65 



Divis. 2. Clypeus antice emarginatus, margine antico haud tuber - 

 culato. Maxillarum lobus internus apice corneo integro. Pro- 

 thorax subquadratus magis transversus . Elytra humeris ro- 

 tundatis. (Iphius, Dej. Cat.) 

 Sp. 2. Prioscelis serrata, Fabricius (Tenebrio s.). 

 Sp. 3. Prioscelis Raddoni, W. P. antennis brevibus articulo ultimo 

 quadrato ; tibiis anticis curvatis, apice dilatatis ; posticis intus 

 serrulatis extus ad apicem subitb dilatatis, prothorace transverso- 

 quadrato, punctis duobus minutis distantibus versus marginem 

 posticum. 

 Long. corp. lin. 14. 



Hab. in Guinea. Mus. Westw. Commun. D. Raddon. 



Sp. 4. Prioscelis crassicornis, W. P. atra glabra, antennis Ion- 



gioribus crassioribus femoribus omnibus ante apicem interne biden- 



tatis, tibiis compressis. 

 Long. corp. lin. 13. 



Hab. in Guinea. Mus. Westw. Commun. D. Raddon. 



Pycnocerus, Hope, MSS. 



(Pachylocerus, Hope, Col. Man. iii. p. 186.) 



Sp. 1. P. Westermanni, Hope, I. c. (An Ten. sulcatus, Fabric. ?) 

 Sp. 2. P. costatus, Silbermann (Odontopus c, Rev. Ent, Col., 

 No. 4.). 



Odontopus, Silberm. 



Sp. 1. 0. cupreus, Fabric. (Tenebrio cu.). O. violaceus, Silb. var. ? 



Sp. 2. O. tristis, W. 0. chalybeo-ater, capite et prothorace opacis, 

 tenuissime punctatis, hujus marginibus lateralibus crenulatis, ely- 

 tris subviridibus magis nitidis valde et irregulariter punctatis, 

 suturd lineisque tribus tenuibus longitudinalibus Icevibus , femoribus 

 simplicibus, tibiis anticis apicem versus intus dente instructis, tibiis 

 posticis curvatis, intus sinuatis. 



Long. corp. lin. 12 J. 



Hab. Senegallia ? Mus. Westw. 



Sp. 3. O cyaneus, Fabricius (Tenebrio cy.). 



Sp. 4. ? O. speciosus, Dejean (Pezodontus sp.). 



Metallonotus, Gray. 

 Sp. 1. M. denticollis, Gray, in Griff. An. K., Ins. PI. LXXX. f. 4. 



Pr^eugena, Laporte, Hist. n. An. Art. 



Sp. 1. Pr. rubripes, Laporte. 



Sp. 2. Pr. carbonaria, King, in Erman's Reise. 



Sp. 3. Pr. marginata, Fabricius (Helops m.). 



Various observations were added by the author relative to the 

 synonymy and generic position of the species above described, and 

 of other tropical African species described by Fabricius, Silbermann, 

 Laporte, &c, and long generic and specific characters were given of 

 the majority, accompanied by numerous illustrations of the generic 

 and structural details. 



Ann. $ Mag. N. Hist. Vol. ix. F 



