Mr. A. Murray on Coleoptera from Old Calabar. 49 



Nov. genus vel subgenus [Tragon). 



4. Tragocephala ( Tragon) signaticornis^ Clievr. Rev. et Mag. 

 d. Zool. 1855, p. 521. 



Alata, punctata, cinerea obscura nigro varia ; ore, oculis an- 

 tennisque (articulo septimo albo) nigris ; thorace postice 

 acutius spinoso ; elytris singulatim quinque maculis trans- 

 versalibus nigris, una basi, duabus ante duabusque post 

 medium. 



Long. 8 lin., lat. 31 lin. 



This species is removed from most of its congeners by its 

 cylindrical form, its antenna? of a regular thickness and sharp 

 at the tip, and its thorax with a spine a little more pointed 

 and placed further back. It is of an obscure ash-grey sprin- 

 kled with black, impunctate. Head broad, square, slightly 

 inclined, convex above ; longitudinal groove narrow. Palpi, 

 mandibles, and eyes black. Antennse black ; first article ash- 

 colom-ed below ; apex of the sixth, base of the eighth, and 

 the whole of the seventh white. Thorax a little longer than 

 broad, straight in front and behind, and transversely four- 

 grooved. Scutellum moderate, semirounded, black, marked 

 with a grey line. Elytra impressed with small points, broader 

 than the thorax, with projecting shoulders, which are black 

 on the outside, convex, parallel, shortly rounded at the apex, 

 with the sutural termination rectangular ; they are dark grey 

 sprinkled with black ; each elytron has five transverse black 

 patches, — one on the middle of the base, two before and two 

 behind the middle, and the two interior are more advanced 

 than the two exterior. Prosternuni scarcely raised behind. 

 Mesosternum regularly raised, rather broad. Abdomen com- 

 posed of five segments, the last the largest, and grooved in a 

 cruciform manner. Pygidium broadly emarginate. Legs 

 rather close to each other, unarmed. 



M. Chevrolat suggests that this species should probably 

 constitute a new genus. 



Unique. Given to M. Chevrolat. I have not, therefore, the 

 materials for characterizing the genus further than indicated 

 in the above details taken from M. Chevrolat's description. 



5. Tragocephala ( Traqon) jaguarifa, Chevr. Rev. et Mag. 

 deZool.'l855, p. 552. 



Alata, punctata, minuta, cinerea ; mandibulis, oculis tarsisque 

 apice nigris ; thorace transversim quadristriato, maculis 

 quinque vel septem obsoletis et nigris, in latcribus posticis 



Ann. & Mag. N. Hist. Ser. 4. Vol. vii. 4 



