CETONIIN^; 313 



pygidium with the wavy incised lines well separated; hind tarsi 

 slender in both sexes. Length (5 a", 15 9) 9.7-11.8 mm.; width 

 5.5-6.8 mm. Texas, New Mexico and Colorado (Poudre River). 

 Female much more abundant than the male kerni Hald. 



7 Body small in size, shining and deep black throughout, the antennae 

 pale red-brown; pubescence above scanty and short, long, dense and 

 coarse beneath on the sterna; three teeth of the anterior tibiae distinct 

 in both sexes, though the upper is small and still rather less devel- 

 oped in the male, nearer the second than the latter is from the apical as 

 usual; base of the pronotum at the scutellum evenly, feebly arcuate, 

 to just visibly but always very gradually, subtruncate; head strongly, 

 closely punctate; prothorax in form and in the deep close punctures 

 as in the preceding species; scutellum acute, triangular, not abruptly 

 expanded at base, irregularly linearly sculptured, except along the 

 middle; elytra of the same form and sculpture as in most of the 

 preceding species; in one example there is a small red spot at the 

 outer side of the humeral callus, the latter projecting laterally as 

 usual; apical margins rounding anteriorly to the suture more or less 

 evidently, the sutural angles not or very minutely and feebly den- 

 ticulate; pygidium frequently rufescent, sparsely pubescent, the 

 irregular incised lines well separated, the surface more convex in the 

 male but not definitely umbonate; hind tarsi (cf 1 ) longer than the 

 tibiae, much shorter (9). Length (2 cf, 7 9) 9.6-11.0 mm.; width 

 5.2-6.4 mm. Texas, Kansas and Colorado texana Schauf. 



8 Form much more elongate than in any of the preceding species, 

 larger than texana, shining, black above and beneath, except that 

 the pronotum medio-basally becomes opaque and the elytra are 

 opaque throughout, excepting the small sparse lineiform punctures, 

 which are shining; legs rufo-piceous; hairs above sparse, very short 

 and inconspicuous, beneath longer and coarse but not very dense 

 on the sterna; head and clypeus strongly, deeply and densely 

 punctate, the clypeus parallel and arcuate at the sides, formed 

 throughout exactly as in the preceding species and with the cusp-like 

 sinus of the apex similar, but it is much more elongate, being slightly 

 longer than wide; prothorax barely wider than long, the sides feebly 

 arcuate, becoming subparallel in rather more than basal half, the 

 basal angles broadly rounded; base broadly lobate medially, with a 

 very feeble sinus at the scutellum; punctures strong, deep and close- 

 set, becoming gradually small and sparse medio-basally, the median 

 line not definitely less punctate and unmodified, except at apex, 

 where it becomes tumid, the apical sinus even; scutellum gradually 

 pointed, smooth, excepting two or three small punctures at the sides 

 and opaque, except at the sides basally, not rapidly expanded basally ; 

 elytra fully two-fifths longer than wide, formed otherwise exactly as 

 in texana, the two ridges on each strongly convex and approximate; 

 punctures laterally transversely lineiform but rather short and sparse, 

 feeble and oblique in two lines between the costaa, with some other 

 more angulate lines inclosing minute shining spaces; sutural angles 

 obtuse and rounded; pygidium shining, piceous, with short sparse 

 hairs, the wavy oblique incised lines well separated; anterior tibiae 



