326 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lis 



being for the most part geminate striate punctate; explanate margin 

 noticeably wide, surface dull and alutaceous; pale yellowish or reddish 

 brown with dark brown or piceous markings, a broad lateral vitta 

 extending from over humerus along the side nearly to the apex, a 

 narrow sutural vitta which widens at apex, a roundish area on each 

 side of the scutellum, another median roundish area near the apex. 

 Body beneath entirely pale, legs with tibiae usually deeper brown on 

 outside edge; in the male the front tibiae and first tarsal joint enlarged. 

 Length 6.2-6.5 mm.; width 3 mm. 



Type in Fabricius collection, Copenhagen, Denmark, "Habitat in 

 America meridional!, D. Smidt, Mus. D. Lund." 



Other localities : Two specimens, John Wilcox collection, from Caura 

 River, Suapure, Venezuela, collected April 7, 1899, by E. A. EQages; 

 two females, Bowditch collection, MCZ, without labels; one female, 

 BMNH, from Surinam (Dutch Guiana). 



Remarks: In markings this species closely resembles H. peruensis 

 but the elytra are more strongly costate and the head is pale instead 

 of being piceous. 



Hystiopsis nigriventris, new species 



Figure 79 



About 7 mm. in length, oblong oval, faintly shining, alutaceous, 

 the elytra distinctly costate with geminate punctation in the intervals; 

 head, breast and abdomen, tibiae and tarsi, and part of femora dark; 

 prothorax and elytra pale yellow, the latter with a long humeral dark 

 vitta extending almost to the middle of the elytra, the area about the 

 scutellum also piceous, the suture widely piceous in the apical half 

 joining with a lateral dark vitta extending from below the middle to 

 the apex, leaving the margin pale. 



Head with interocular space half width of head, occiput finely punc- 

 tate, alutaceous but shiny, frontal tubercles swollen and a median 

 depression above them, lower front depressed, a fine elevated line down 

 from between the antennal sockets; head entirely dark except the neck, 

 antennae dark with the last three joints pale, the tip being dark. 

 Prothorax considerably wider than long with nearly straight sides and 

 a transverse depression, alutaceous, finely punctate, entirely pale 

 yellow. Scutellum piceous. Elytra with 7 or 8 more or less distinct 

 costae, the intervals being geminate punctate, alutaceous but feebly 

 shining, pale yellow, a piceous marking extending from humerus along 

 side nearly to the middle, and another along side from below the middle 

 to apex and uniting there with a broad sutural vitta, the margin pale; 

 another piceous marking extending from about scutellum down the 



