56 AMERICAN COLEOPTERA. 



Coptnriis horriduN n. sp.^Stout, densely clothed with broad overlap- 

 ping yellowish brown scales, thickly interspersed throughout the upper surface, 

 except the sutural interval, with narrower erect scales of the same color; a small 

 subsutural blackish brown spot at the middle of each elytron. Beak moder- 

 ately stout, tapering to the insertion of the antennae, a little widened at tip, base 

 squamose and punctate, tip glabrous and nearly smooth ; antennae inserted at 

 the middle of the beak, slender, rufotestaceous, club and tip of scape piceous, 

 first joint equal to and scarcely stouter than the second which is a little shorter 

 than the third and fourth together, club a little longer than the three preceding 

 joints; eyes most closely approximate a little below the middle of the front 

 where they are separated by rather more than half the distance between them 

 at their superior limits. Prothorax a little wider than long, widest at base, sides 

 nearly straight and convergent to the feeble apical constriction. Elytra a little 

 more than twice as long as the prothorax and at the humeri one-fourth wider; 

 sides very feebly arcuate, gradually converging to the apex, which is abruptly 

 sinuate and then broadly rounded. Beneath densely clothed with paler closely 

 appressed scales; legs, more especially the tibiae, with the scales in part erect; 

 first ventral segment broadly impressed throughout its middle second, with two 

 feeble cusps at the middle of the posterior margin and separated from each other 

 by a distance a little less than the length of the segment. Length 4.2 mm. 



One example. San Jose del Cabo. 



The outer or front face of the middle and hind femora bears a 

 long, rather fine longitudinal glabrous carina, a character which is 

 not present in any other species known to me ; this and the erect 

 scales of the upper surface will at once distinguish the species from 

 any other in our fauna. 



C. qnadridens Horn.— Proc. Cal. Acad. Sci. 2d Ser. Vol. iv, 1894, p. 446. 

 At once easily distinguishable from all our other species by the numerous and 

 conspicuous tuberosities of the upper surface, and by there being four dentiform 

 prominences along the posterior margin of the second ventral segment instead of 

 the usual two. The size is large, the prevailing color of the upper surface pale 

 brown with a common sutural subtriangular spot dark brown at the middle of 

 the elytra. The prothoracic tubercles are arranged as follows as stated by Horn. 

 An 'arcuate row of six tubercles limiting the apical constriction, a tubercle at the 

 middle of the apical margin and two others on the disk behind the middle. The 

 most prominent tubercles of the elytra are arranged in two transverse rows, one 

 ante-median, the other post-median, with some smaller ones intermediate and 

 along the basal and apical margins. The interocular space is narrowest near the 

 middle, where it is from one-half to one-third the width of the eye. Length 3i 

 to 5h mm, and about 2^ times the width. 



Lower California, El Taste (type), Santa Rosa (Beyer). 



C. jatropliae n. sp. — Rather elongate, subparallel, prevailing color of the 

 scales of the upper surface blue gray, obscurely varied with pale and dark 

 brown ; pntthorax with a large subquadrate patch of white scales at the sides 

 posteriorly; elytra with a white dot at the humeral angle, a short transverse 



