209 



DESCRIPTIONS OF SOME NEW SPECIES AND A NEW 

 GENUS OF CHRYSOMELID^ FROM SOUTH AMERICA. 



By Martin Jacoby. 

 (Concluded from p. 183.) 



Frenais, gen. n. (Eumolpidfe). 

 Body elongate, glabrous, antenuse filiform, the intermediate joints 

 slightly widened ; eyes globular, entire ; thorax transversely subquadrate, 

 the sides entire ; elytra wider than the thorax, rugosely punctured ; 

 tibiae not emarginate ; claws appendiculate ; the prosternum deeply 

 bilobed ; the anterior margin of the thoracic episternum concave. 



The genus here proposed will form part of the group Chalco- 

 phaninae, on account of the bilobed prosternum ; it seems most 

 nearly allied to Agrosterna, Har., but differs entirely in its general 

 shape and that of the thorax. Von Harold gives the shape of 

 his genus as that resembling Noda and Iphimeis, which represents 

 an ovate and convex form ; in the genus here described the shape 

 is that of Colaspis and allied genera, and the thorax is of equal 

 width, neither narrowed nor deflexed, but transverse and sub- 

 quadrate, which character separates it also from Chalcophana 

 and the other genera of the group. 



Frenais peruana, sp. n. 

 Dark bluish black; the thorax distinctly but irregularly punctured; 

 elytra . greenish-cupreous, very closely and strongly punctured, the 

 interstices at the sides finely rugose. Length 7 mill. 



Hab. Marcapata, Peru. 



Head sparingly punctured, metallic bluish, with a rather deep de- 

 pression between the eyes ; the latter prominent, round ; the anterior 

 margin of the clypeus and the labrum fulvous ; antennae very long, 

 bluish black, the apex of the lower tAvo joints fulvous, second one very 

 short, third and following joints nearly equal, the intermediate joints 

 slightly widened (male) ; thorn.x transverse, the sides feebly rounded, 

 the angles acute, slightly tuberculiform, the surface but slightly convex, 

 metallic bluish, irregularly and not very closely punctured, the punctures 

 of unequal size; scutellum dark purplish, subelongate ; elytra greenish 

 cupreous, extremely closely punctured, the punctures round and deep, 

 the interstices rugose except near the suture where the punctures are 

 somewhat regularly arranged in rows ; under side and legs bluish black. 



A single male specimen is contained in my collection in 

 which the anterior tarsi are as usual dilated. 



TiTUBCEA (Anomcea) insularis, sp. n. 

 Testaceous, antennae extending to the base of the thorax, the latter 

 impunctate, elytra elongate, not perceptibly punctured, legs slender. 

 Length 6 mill. 



Hab. Isle of Trinidad. 



