AMERICAN COLKOPTERA. 175 



series of three or four in a transverse line at the posterior fourth. All elytral 

 tufts are small and easily lost hy abrasion, the outer one in the central dark area 

 being most persistent. Sterna granulate as usual, the abdomen very sparsely 

 punctate, not granulate along outer margin. Length 3.5-5.4 mm. 



Hab. — Santa Rosa, Lower California. 



A small number of specimens collected by Mr. Beyer, to whom I 

 am indebted for this and many other interesting additions to my 

 cabinet, and whose name I am pleased to give to the above species 

 in recognition of the good work done by him in the region named. 



5. T. I exana Schaef. — Oblong, cylindrical, twice as long as wide, with white 

 and fulvous pubescence, intermixed with longer erect hairs. Head dull, with 

 rather densely placed elongate granules, front more distinctly impressed than 

 usual. Antennal club longer than the preceding joints united, intermediate 

 joints as wide as long. Prothorax very nearly equal in width to the elytra, sides 

 arcuate in front, then sinuately narrowing to the hind angles which are usually 

 rather sharply defined though obtuse; surface granulate and densely clothed 

 with whitish and fulvous short recumbent hair, intermixed with longer erect 

 hairs; gibbosity with four small blackish spots, two at the summit and two ante- 

 rior to these. Elytra regularly striate with coarse, closely placed punctures, base 

 and apex sparsely granulate; vestiture dense and nearly uniformly white to 

 apical fourth, which is more sparsely clothed with fulvous hairs. Anterior tufts 

 of black hairs almost completely wauting, posterior tufts small but obvious, in a 

 transverse liue at apical fourth. Beneath densely gray pubescent. Sterna granu- 

 late as usual, the ventral segments also granulate over almost their entire sur- 

 face. Leugth 4-5 mm. 



Specimens are before me from Brownsville, Texas (Schaetier) ; 

 Cameron County, Texas (Wickham) ; Matamoras, Mexico (Nat. 

 Museum collection). 



6. T. sellata Horn. — Cylindrical, rather more oblong than gibbosa, piceous 

 black, densely clothed above with a white matted web-like pubescence, a large 

 saddle-shaped space common to both elytra, of brownish pubescence, the whole 

 surface with intermixed longer erect hairs. Antennae ferruginous, the club 

 distinctly longer than the preceding joints combined, joints 6 8 evidently 

 smaller than those preceding, ninth as long as third to eighth united in the male. 

 Head densely pubescent and granulate. Thorax broader than long, sides arcu- 

 ate in front, suddenly sinuately narrowing at the middle, hind angles distinct; 

 disk strongly gibbous, an impressed line, chiefly due to the parting of the pubes- 

 cence, from the apical margin to the summit of the gibbosity, which is clothed 

 with short stiff" brown hair. Elytra a little wider than the thorax at middle' 

 with well-defined series of coarse punctures; very densely pubescent, the surface 

 concealed, except in the dark discal area; each with two transverse series of 

 brownish black brush-like tufts of erect hair, one — three in number — at the basal 

 third, the other at apical third, four in number, but the outer one very small. 

 Body beneath densely pubescent. Sterna and abdominal margin granulate. 

 Length 7 mm. 



TKANS. AM. KNT. SOC. XXXI. MAY, 1905. 



