288 MEMOIRS ON THE COLEOPTERA 



io Tubercles wholly vestigial, represented by feeble broad swelling of 

 the surface, which is not at all acute. Body stout, subparallel, the 

 prothorax very large, more than three-fourths as wide as the elytra 

 (d 71 ) and about as long as wide; antennae very finely tapering, the 

 fourth joint annulate with white in basal half or more; prothorax 

 very convex, the median line striate for a short distance behind the 

 centre, minutely, not densely, uniformly punctate, with an area of 

 coarse punctures toward base and narrowly along the apex; elytra 

 oblong, feebly narrowing behind to the extremely broad, arcuate 

 apex, rather convex, one-half longer than wide, with many irregular 

 anastomosing creases and some coarse punctures, numerous on and 

 near the obtuse line of flexure to apical fourth, also in an irregular 

 line near outer third and another, still broader, near inner fourth, 

 from the base nearly to the middle, the flanks with numerous coarse 

 asperulate punctures from base to behind the middle; hind femora 

 peculiarly sculptured, having very minute, sparse and feeble punc- 

 tulation, with rather sparse fine punctures intermingled to apical 

 fourth, where, along a line which is advanced axially, the punctulation 

 becomes abruptly much stronger and very dense; fifth ventral (cf) 

 very broadly sinuato-truncate and strongly beaded at apex. Length 

 (cf ) 22.0-25.0 mm.; width 8.6-10.2 mm. Texas (El Paso), Dunn. 



solida n. sp. 



Tubercles very small but acute and distinct 1 1 



II Form, coloration and lustre nearly as in solida, the antennae similar, 

 the prothorax similar in its subquadrate form and in sculpture but 

 relatively a little smaller, much narrower than the elytra, the median 

 line finely striate and with a large feeble indentation slightly behind 

 the centre; scutellum differing considerably, being much less trans- 

 verse and nearly equilatero-triangular; elytra narrower and more 

 elongate, four-fifths longer than wide, more convex, smooth, the 

 creases of the preceding not visible, except near the base, where they 

 are more longitudinal; punctures coarse and rather close-set on and 

 near the line of flexure to apical third, almost completely wanting 

 elsewhere, except a single widely spaced line very near the suture 

 for a short distance behind the scutellum; the lower part of the line 

 of flexure is free from punctures and those of the flanks are coarse 

 but everywhere widely separated, extending inferiorly to apical 

 third; femora as in solida, the tarsi much shorter, with the basal 

 joint much less elongate; fifth ventral (c/ 1 ) still somewhat more 

 broadly sinuate but more finely beaded at apex; female nearly simi- 

 lar to the male but more elongate, with relatively smaller prothorax 

 and with the more slender femora evenly sculptured throughout. 

 Length (cf 9 ) 22.0-24.5 rnm.; width 9.2-9.7 mm. Texas (western). 



femoralis n. sp. 



Form much more slender, similarly shining but with the legs piceo-rufous; 

 antennae nearly similar, the annulus of the fourth joint shorter and 

 less well marked; prothorax differing greatly in being much shorter 

 and rather strongly transverse, the sculpture more obsolete, there 

 being only a very few punctures near the apex and a single irregular 

 line near the base, the small medial indentation being at basal 



