30 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



with the siitiiral; body beneath and femora pale, tibiae and tarsi more 

 or less dark. 



Head pale except for the narrow dark mark extending from the 

 occiput down to the frontal tubercles and widening over the tubercles, 

 smooth, with only a large fovea near the eye, frontal tubercles dis- 

 tinctly marked, interocular space a little more than half the width 

 of the head, carina (in cotype) with a dark streak, a little produced, 

 lower front rather short. Antennae with the basal joints either partly 

 pale or pale edged, the rest dark, apical joint light brown, Prothorax 

 approximately twice as wide as long, not very convex, a little depressed 

 over the scutellum, pale with a dark explanate margin, or a lateral 

 darkening, curvmg up behind the eye, a lateral spot on each side and 

 two anterior spots sometimes confluent with a median elongate mark; 

 surface faintly alutaceous and impunctate. Elytra likewise faintly 

 alutaceous and impunctate, somewhat shiny, pale with a narrow dark 

 sutural vitta uniting at apex with a marginal vitta when the latter 

 is present, median vitta narrow. Epipleura pale in specimens lack- 

 ing marginal vitta, otherwise dark or with darkened edge. Body 

 beneath entirely pale, shiny, lightly pubescent, femora pale, tibiae 

 dark or with a dark streak, tarsi dark. Length 6.8 to 7.7 mm., width 

 3.5 to 4 mm. 



CoTYPEs: In BM (2), from Peru. 



Other localities: Colombia: one specimen from the Jacoby ma- 

 terial in MCZ (Bowditch collection) ; one from "R. Dagna," W. Rosen- 

 berg; one, in USNM, taken alive in orchids from Colombia. Vene- 

 zuela: La Providencia, Maracay, L. F. Martorell. Canal Zone: Red 

 Tank, Nathan Banks; Barro Colorado Island, J. Zetek. Costa Rica: 

 Chiriqui. 



Remarks: Because of the small number of specimens examined, I 

 hesitate to try to differentiate between those from North and South 

 America. The cotype from Peru examined, a male, has a dark elytral 

 margin and an aedeagus that has a longer tip than that of a single 

 male from Costa Rica. The aedeagus of a specimen from the Canal 

 Zone, although the specimen is paler and lacks the dark marginal 

 vitta, is more like that of the Peruvian male. This species belongs 

 to the group to which D. militaris Jacoby and D. leptolineata Schaeft'er 

 also belong. The aedeagi of all are very similar, and the markings 

 of the beetles vary so that it is very difficult to draw a line between 

 the pale specimens of D. peruana and the typically marked specimens 

 of D. militaris. Jacoby in his description of D. militaris mentioned 

 two varieties, one with and the other without submarginal vittae, 

 and I presume he had specimens similar to the one from the Canal 



