50 PROCEEDINGS OF THE NATIONAL MUSEUM v 



narrowly down front to tubercles and around the back of eyes to the 

 mouthparts, which are dark. Antennae with the three basal joints 

 pale edged, remainder dark. Prothorax about twice as wide as long, 

 with wide anterior angles and nearly straight sides, mirror smooth, 

 shiny, pale yellow without markings, depressed across base, almost 

 a groove. Scutellum dark. Elytra with sutural and narrow mar- 

 ginal vitta united at apex, a moderately wide median dark vitta; 

 sm-face shining, nearly impunctate, epipleura dark, sometimes pale 

 down the middle. Body beneath entirely pale, femora dark at apex, 

 tibiae sometimes enthely dark, more often dark at apex, tarsi dark. 

 Length 6 to 7 mm., width 3 to 3.5 mm. 



Type: Male, and three paratypes, MCZ 29039, and paratype, 

 USNM 61820, all taken at Aracataca, Magdalena Province, Colombia, 

 by P. J. Darlington. 



Other localities: Rio Frio and Seville, Magdalena Province, 

 Colombia, P. J. Darlington; three specimens in BM, one, a male, with 

 the old label "Carthagina, D. incognita dej.," another labeled Santa 

 Marta, Pascoe Coll., and a third with no locality label. 



Remarks: Aside from slight color differences in the head, this 

 species is like D. didyma, from the Canal Zone. Both resemble D. 

 barberi Blake, although the aedeagi of D. tridyma and D. barberi are 

 very different. 



Disonycha cordigera, new species 



Figure 71 



Between 6.5 and 7 mm. in length, elongate oblong oval, shining, 

 nearly impunctate; pale yellowish brown; dark antennae; a large dark 

 occipital spot; pronotum usually 3-spotted, the middle spot largest; 

 elytra with dark sutural and marginal vittae, joined at apex, and 

 moderately wide median vitta; body beneath usually pale although 

 sometimes with the breast darkened on the sides, femora usually pale 

 with a dark streak but occasionally entirely dark, tibiae usually dark 

 in apical half, tarsi dark. 



Head with interocular space about half the width of the head 

 polished, impunctate except for the fovea near eye; frontal tubercles 

 clearly marked, carina sharp, narrow and slightly produced, lower 

 front long and narrow, eyes large; pale yellow, with a large round spot 

 on occiput occasionally expandmg to form a band across and extend- 

 ing down to the tubercles, labrum dark. Antennae with the three 

 basal and also terminal joint slightly paler than the dark intermediary 

 joints. Prothorax not twice as wide as long, with well developed 

 anterior angles and nearly straight sides, mirror smooth and depressed 

 over the scutellum and on sides near the base, pale yellow with three 

 dark spots, the middle the largest. Scutellum dark. Elytra shiny, 



