VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 37 



cluster of coarse punctures or fovea on either side near eye, space 

 between antennal sockets wide and fiat, not much produced, lower 

 front rather short, mouthparts and, in darker specimens, a spot on 

 occiput deeper brown. Antennae moderately long, with the four basal 

 joints pale in paler specimens, rest reddish brown. Prothorax approx- 

 imately twice as broad as long, shining, impunctate, moderately con- 

 vex, yellow brown, with five more or less distinct reddish brown spots, 

 the two anterior ones the most deeply marked. Elytra alutaceous 

 and very finely punctate, somewhat shining, pale yellow, with wide 

 sutural and median vittae, the sutural one at apex joining with a 

 narrow submargmal one, all these vittae edged with deeper brown. 

 Legs and undersurface pale, in darker specimens edge of abdomen and 

 legs mostly dark, tarsi always darker brown. Length 6.6 to 7.5 mm.; 

 width 3.5 to 4 mm. 



Type: Not designated by Jacoby, who stated that he had 10 speci- 

 mens and gave the habitat as Hondo River, British Honduras, Blan- 

 caneaux collector. In MCZ (Bowditch collection) are four specimens 

 from the type locality, and one from Acapulco, Mexico, Hoge collec- 

 tor, a locality not mentioned by Jacoby. The rest of the type series 

 is in the British Museum. 



Other localities: Mexico: San Luis PotosI, two specimens taken 

 by the inspector of vegetables at Nogales, Arizona. 



Remarks: The pale reddish brown elytral vittae are edged with 

 deeper brown, a feature not present in related species. The two 

 specimens from San Luis PotosI have nearly as dark vittae as usual, 

 but upon careful examination the deeper colored edge can be discerned. 



Disonycha gracilis, new species 



FlGTJRE 37 



About 6 mm. in length, elongate oblong oval, faintly shining, finely 

 alutaceous and finely punctate; pale yellow; reddish brown to piceous 

 antennae and tibiae and tarsi; faint brownish areas on prothorax; 

 narrow dark sutural, submarginal, and median elytral vittae not united 

 at apex. 



Head with interocular space more than half the width of head, lower 

 front not long, with short, broad carina, well developed tubercles, a 

 double row of punctures from the large fovea near eye down to anten- 

 nal sockets, head pale in one specimen, in the other with a small dark 

 spot on the occiput. Antennae long, varying from pale to deep red- 

 dish brown. Prothorax considerably less than twice as broad as long, 

 with rounded sides and faint basal depression over the scutellum, pale 

 yellow, with two dark spots anteriorly and fainter reddish brown areas 

 on either side; surface finely alutaceous. Scutellum dark. Elytra 



