148 OGELOCEPHALXTS. 



4. Coelocephalus fusco-costatus. 



C. oblongo-ovatus, robust us, pallide testaceus ; capite brevi, reflexo, 

 inter Ottdos transverse depresso, punctate, inter oculos fusco 

 suffuse- ; tlwrace quadrate (subelongato), ad basin constricto et 

 transverse depresso, punchdato ; elytris sat robustis, paraMelis, 

 jninctato-striatis, ad basin medium circidariter macidatis, etiam- 

 (jue transverse ad medium suturam ; lateribus fusco suffusis ; 

 antennis long is, filiformibus, art. 1-3 fuscis, 4 et 5 testaceis, 6 

 fusco, 7 et 8 nig ro -fuscis, 9-11 testaceis ; pedibus pallide testaceis. 



Long. corp. 2 tin., lat. f tin. 



Oblong-ovate, rather more parallel than C.pygmceus, robust, punc- 

 tate-striate, snbpubescent, pale testaceous. Head short, depressed, 

 reflected backwards at a sharp and acute angle ; eyes large, very pro- 

 minent, projecting laterally beyond the margin of the thorax, situ- 

 ated immediately at the back of the head ; the base of the antenna? 

 is prominent, and situated directly on the angle of reflection ; im- 

 mediately above it, and between the eyes, is an obsolete T-shaped 

 depression ; the surface is finely punctate, more distinctly at the 

 base, between the eyes suffused with dark fuscous. Thorax quadrate 

 (slightly elongated), distinctly constricted at the base ; the anterior 

 angles depressed ; the sides marginate ; at the base is a broad trans- 

 verse depression, which extends as far as the marginatum ; the sur- 

 face is finely punctate, subpubescent. Scutellum triangular, fuscous. 

 Elytra broad, robust, parallel, broadly punctate-striate (the punctures 

 being broad and shallow), subpubescent : at the base is a large semi- 

 circular spot common to each elytron and surrounding the scutellum 

 (this marking is equal in breadth to the base of the thorax) ; at the 

 line of marginatum is a longitudinal suffused fuscous marking, ex- 

 tending from the shoulders nearly to the apex, while on the suture 

 (between the middle and the base) is a small suffused fulvous 

 marking, obliquely transverse. Antenna; twice the length of the 

 elytra, filiform ; the first and second joints dilated ; the first, second, 

 and base of the third fuscous ; the fourth and fifth testaceous ; the 

 sixth fuscous ; the seventh and base of the eighth dark fuscous, in- 

 clined to black; the rest pale testaceous. Legs pale testaceous 

 throughout; the globular inflation over the posterior claw bright 

 ferrusrineous. 



*•©■* 



This species may be distinguished from C. pygmceus (to which it 

 is very closely allied) by the different form of the thorax, the co- 

 louring of its antenna?, and the fuscous marginatum on its elytra. 



From the district of the River Amazon. 



