34 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



Remarks: This is about the same size as D. quinquelineaia (La- 

 treille) and resembles it in being entirely pale except for the antennae 

 and the narrow elytral vittae, but unlike quinquelineaia it has a dark 

 streak on the anterior tibiae. The prothorax is quite different in 

 shape, being short and broad and with wide apical angles, and resembles 

 that of the group of species represented by D. nigrofasciata (Jacoby). 

 Unfortunately the only two specimens are females. 



Disonycha brevilineata Jacoby 



Figures 23, 25 



Disonycha brevilineata Jacoby, Biologia Centrali-Americana, Coleoptera, vol. 6, 



pt. 1, p. 317, 1884. 

 Disonycha brevicolUs Jacoby, Proc. Zool. Soc. London, vol. 1, no. 13, p. 188, 1902. 



From 6 to 7 mm. in length, broadly oblong oval, moderately shiny, 

 densely punctate; pale yellow; head sometimes with a small dark 

 occipital spot ; prothorax without dark spots; elytra with a very narrow 

 sutural darkening and a narrow marginal one uniting usually at the 

 apex, and a narrow median vitta with a short one beside it near the 

 apex and towards the margin, sometimes coalescing in darker speci- 

 mens; body beneath with the breast usually more or less dark, apex of 

 hind femora often dark and tarsi dark. 



Head with interocular space more than half its width, alutaceous and 

 with coarse punctures across front and about eyes, frontal tubercles 

 distinctly defined and the space between antennal sockets broad and 

 a little produced, sometimes a dark occipital spot but frequently the 

 head except for the dark mouthparts entirely pale. Antennae dark 

 with paler edged basal joints, rather short. Prothorax about twice 

 as broad as long, moderately convex, with a slight depression over the 

 scutellum, faintly alutaceous and usually rather densely punctate; 

 usually entirely pale, although in one specimen two faint spots anter- 

 iorly. Elytra broad, rather convex, shining, densely and moderately 

 coarsely punctate with finer punctiu-es intermixed, pale yellow, usually 

 with a very narrow sutural vitta, often just the sutural edges darkened, 

 a narrow marginal or submarginal vitta and a median vitta with a 

 short one near the apex, occasionally in a darker specimen the vittae 

 broader and the margin dark, in some specimens the short vitta 

 entirely absorbed into the median vitta, giving it a club-shaped tip; 

 epipleura pale except in specimens with a dark margin. Body beneath 

 usually with the breast more or less dark, the hind femora with dark 

 apex, and the tibiae often darker at apex, tarsi dark. Length 6 to 7 

 mm,, width 3.5 to 3.8 mm. 



Type: In BM, from Capulalpam, Mexico, Salle. The type of D. 

 brevicolUs Jacoby is not designated, but Jacoby stated that he had 



