14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



the median vitta narrow but clearly defined; other specimens darker 

 with wider elytral vittae; surface finely alutaceous and finely punctate. 

 Body beneath with the breast entirely dark and the abdomen having 

 the first segments dark, becoming paler at apex; legs with the femora 

 and tibiae pale, tarsi dark. Length 7.2 to 8.2 mm., width 3.4 to 4 mm. 



Type: Male, MCZ 29043, from Rio Grande do Sul, Brazil. 



Other localities: Brazil: Santa Catarina Province, Corupd 

 (Hansa Humbolt), Rio Vermelho, Rio Natal, Pinhal, all collected by 

 A. Mailer, in AMNH; Blumenau, "S. O. Brazil" (Reitter); Rio de 

 Janeiro (2nd Jacoby collection); Santa Catarina, Liiderwaldt (1st 

 Jacoby collection), Bahia (2nd Jacoby collection, Bowditch collection). 

 In the British Museum (Fry collection) are specimens from Parand 

 and Rio de Janeiro and one from Rio de Janeiro, collected by C. 

 Darwin. 



Remarks: These specimens all come from the southeastern part 

 of Brazil. They are very similar to D. bicarinata Boheman from 

 Argentina, but are in general a little stouter and always without pro- 

 notal spotting above or a darkening of the prosternum below. The 

 abdomen tends to be darker than in D. bicarinata, and the tip of the 

 aedeagus is wider although of the same general shape. The specimens 

 from Santa Catarina province are darker and with wider elytral 

 vittae than the single male from Rio Grande do Sul. 



Disonycha varia, new species 



Figure 8 



Between 7 and 8 mm. in length, elongate oblong, alutaceous, moder- 

 ately shiny; the elytra distinctly punctate and rather widely margined; 

 head dark on occiput; pro thorax entirely pale; elytra with dark sutural 

 vitta joining at apex with narrow^ submarginal vitta, a moderately 

 wide median vitta with a costa running down the middle; body be- 

 neath, except prosternum, more or less dark, femora pale, tibiae and 

 tarsi deeper brown. 



Head with interocular space about half its width, a darkening over 

 occiput, the mouthparts darker, a cluster of punctures on either side 

 of head near eye, tubercles not well defined, carina broad, little pro- 

 duced, lower front rather short. Antennae long, extending almost 

 to the middle of the elytra, the three basal joints paler, the rest dark. 

 Prothorax twice as wide as long, with curved, moderately wide ex- 

 planate margin, depressed at sides of base and over the scutellum, 

 entirely pale, shiny, only faintly alutaceous, very finely punctate. 

 Elytra with a noticeably wide, pale, explanate margin, the dark 

 sutural vitta joining with the submarginal vitta at apex, a moderately 

 wide median vitta and in this a costa, more pronounced in the female; 



