192 Zoologica: N. Y. Zoological Society [HI; 6 



the antennal club seems to be more abrupt and larger, and the 

 shape of the produced clypeus differs also from the figures Grou- 

 velle, (Ann. See. Ent. Fr., vol. 65, 1896, p. 193) has given of 

 the two previously known species. 



Eunausibius wheeleri sp. nov. 

 (Plate VI, figs. 6 to 10). 



Elongate, parallel, moderately convex, smooth, shining, gla- 

 brous, pale castaneous. 



Length, 3.0-3.5 mm. ; width, 0.6-0.75 mm. 



Habitat. — British Guiana. 



Head wider than prothorax; eyes rather large and promi- 

 nent, coarsely granulated, front widest in front of the rather 

 strongly impressed fovea opposite which the margin is some- 

 what thickened ; front margin broadly, feebly emarginate, front 

 angles obliquely truncate; surface finely granulate, feebly con- 

 vex. Labrum membranous, concealed beneath front. Gular 

 area feebly concave, opaque, finely pubescent, the lateral carinas 

 bordering the antennal grooves convergent posteriorly and pass- 

 ing middle of eye. Antennte as long as width of clypeus, club 

 abruptly widened, oval. Pronotum about three-fourths as wide as 

 long, widest at the slightly acute front angles, sides almost 

 straight and parallel, finely carinate; front margin straight 

 except small sinuation near angles, hind margin arcuate at mid- 

 dle, on each side straight, hind angles obtuse. Surface trans- 

 versely convex, longitudinally flat except for a pair of feeble 

 impressions at basal fourth. Scutellum transversely oval, twice 

 as wide as long. Elytra slightly wider than prothorax, three 

 times as long as wide, sides parallel, apices evenly rounded ; 

 surface nearly smooth, strial punctures feebly impressed but 

 conspicuous by coloration below surface. Callow specimens dis- 

 play interstrial rows of microscopic appressed hairs. Under 

 surface of body sparsely clothed with microscopic decumbent 

 hairs, each set in a broad obsolescent puncture. 



Described from eighteen specimens submitted by Dr. 

 Wheeler, to whom the species is dedicated. Two of the specimens, 

 dissected and mounted on slides, are males. One speci- 

 men, the allotype, is somewhat crushed and displays female sex 



