32 BEY. T. A. MARSHALL — COETKODHSTOBUM RECENSIO. 



2. C. CTANETJS, Fab. 



Fab. El. i. 429. 4. Gv^r. Icon. R. Anim. vol. iii. p. 295. Fab. Ent. Syst. 

 i. 324. 84, nee Oliv. — Platyc. latieornis, Dej. Cat. 



C. elongato-ovatus, totus splendide nigro-cyaneus ; thoraee minutissime 

 remote punctulato; elytris subtiliter irregulariter, humeros versus 

 sub-bistriatim punctatis; segmentorum abdominalium marginibus 

 cum metasterno interdum violaceo tinctis ; tibiis, tarsis breviter fulvo 

 hirsutis. 



Long. 5|-6| lin. ; lat. hum. 2-2| lin. 



Vertex gibbous, shining, more coarsely punctured than the thorax ; ver- 

 tical impressed line nearly, sometimes entirely, obsolete. Labrum and 

 palpi with fulvous hairs. Eyes dark rufo-fuscous. Thorax very deli- 

 cately punctulate (the punctules invisible to the naked eye), dis- 

 tinctly sinuated behind the eyes, antero-lateral angles subacute. 

 Elytra irregularly punctulate, with traces of two punctured striae 

 descending from the humerus and obliterated posteriorly. Ungues 

 nifo-piceous. 



Hab. Senegambia. 



The Fabrician diagnogis of this insect is as follows : — " Cyaneus, 

 nitidus, pedibus nigris. Sab. in America meridionali. Mus. 

 D. Banks." 



The type specimens in the cabinet referred to are two in num- 

 ber; the first or left-hand-side one being Chrysochus CMnensis, 

 Baly, the other C. cyaneus, Fab., distinctly labelled " in Africa 

 sequin." The Chrysochus was probably the hasty addition of a 

 later hand. The habitat given by Fabricius in his writings, and 

 which differs from the ticket attached to the type, can only be an 

 oversight, as no species of the present genus has ever been dis- 

 covered in the New World. Olivier rectified, as he thought, the 

 habitat, but mistook the insect altogether for an Indian species, 

 which has done duty ever since in collections for the true cyaneus, 

 Fab. 



3. C. SIMILLIMUS. 



C. cyaneo affinis, subelongato-ovatus, violaceo-niger, nitidus ; thoraee 

 subtilissime remote punctulato ; elytris confertim irregulariter punc- 

 tatis ; subtus cum pedibus niger, minus nitidus. 



Long. 5 lin. ; lat. hum. 2j lin. 



Closely allied to the preceding ; differs in being mor broadly ovate ; 

 thorax shorter in proportion, wider at the base, and less deeply sinu- 

 ated behind the eyes ; antero-lateral angles more obtuse. Elytra 

 much more coarsely punctured, without traces of the faint humeral 

 punctured striae. The coloui- of the superior surface, especially the 

 thorax, is violaceous black ; the underside and legs black, much less 

 shining. 



Hab. Gold Coast. 



