NEW AMERICAN SCOLYTOID BEETLES — BLACKMAN 377 



the first two each nearly two-thirds septate ; segments of f unicle con- 

 siderably wider distally. 



* Pronotum 1.07 times as long as wide, slightly widest near middle ; 

 posterior outline nearly straight, posterior lateral angles rounded, 

 sides nearly straight, very feebly diverging to middle, then arcuately 

 narrowed, very broadly rounded in front; surface feebly shining 

 throughout, feebly, transversely impressed back of anterior margin; 

 with moderately close, rather fine, elongate punctures, not confluent 

 and not strigate; median line extending from base to apex, narrow, 

 feebly elevated ; vestiture lacking. 



Elytra wider than pronotum and 1.83 times as long, 1.83 times as 

 long as wide; bases rather weakly arcuate; humeral callus evident; 

 sides nearly straight and subparallel for about three-fourths of their 

 length, then narrowed, moderately rounded behind; surface shining; 

 striae narrow, impressed, the first more strongly; striae small, sep- 

 arated by their own diameter; interspaces weakly convex, rugulose, 

 with fine punctures, not uniseriate, hairs few in number and very 

 minute on disk and sides; declivity sloping; striae more deeply im- 

 pressed than on disk; interspaces narrower, rather strongly convex, 

 finely granulate, each with uniseriate row of erect, yellowisli bristles. 



The male is unknown. 



Type locality. — Santander, Colombia. 



Host, — Branches of Cojfea arablca. 



Type material. — Holotype and 2 paratypes, U. S. N. M. No. 56554. 



The type series was taken from dry branches of Co-ffea arahica, San- 

 tander, Colombia, at an elevation of 700-1,300 meters, by R. P. Roba. 



CNESINUS NITIDUS, new species 



Plate 15, Figures 12, 13 



Male. — Piceous to black, with elytra dark reddish brown ; 1.66 mm. 

 to 1.88 mm. long, holotype 1.80 mm. long, 2.33 times as long as wide ; 

 pronotum shining, not strigate but with longitudinal punctures. 



Frons (fig. 13) strongly convex above, transversely impressed, sub- 

 concave below; surface shining, finely, not closely punctured, with 

 rather coarse, semierect hairs from epistoma and at sides above, 

 directed dorsad; epistomal margin with finer hairs, directed orad. 

 Eye long oval, inner line with shallow emargination at some distance 

 above insertion of antennae ; facets moderately coarse. 



Pronotum nearly exactly as long as wide, posterior outline weakly 

 bisinuate, posterior lateral angles rectangular, sides nearly straight 

 and feebly diverging on posterior half, then arcuately narrowed, 

 feebly constricted, broadly rounded in front ; surface brightly shining. 



