288 OURCULIONLD^. 



[LeConte. 



2. Pubescence dense; protliorax with three denuded ba- 

 sal spots 2. trinotata. 



Pubescence thin, prothorax without spots 3. plumbea. 



t. T. texana, n. sp. 



This species in every respect resembles the next, except in being clothed 

 witli a dense covering of whitish scales, which on the upper surface are 

 not hair-like, but oval, and not more than three times longer than wide. 

 Beneath the scales are of the same size as above, and a little broader. The 

 scutellum is concave, black, naked, and shining. There is a very small 

 denuded basal spot, just inside ot the humeral callus, but it does not extend 

 upon the prothorax; the striiB are fine, and almost concealed by the cover- 

 ing of scales. Length 5 mm. ; .20 inch. 



Texas, Belfrage. As in the next species, the third and fourtli ventral 

 segments are smooth and shining at the middle. 



2. T. trinotata Say, Cure. 17; ed. Lee. i, 280 {Baridhis); Lee, Proc. 

 Acad. Nat. Sc. Phila. 1868, 364; Baridius vestitus Boh., Sch. Curciii, 718; 

 var. B. mucoreus Lee, Pr. Ac. 1858, 79; ibid, 1868, 364. 



Atlantic district, abundant and sometimes injurious to potatoes. 



Specimens from Upper and Lower California, and Arizona, are of larger 

 size, and the proportion of oval scales on the under surface is greater; in- 

 termediate forms between these and the northern individuals, in which the 

 vestiture of the under surface is almost entirely capillary, occur in the 

 Southern States. 



3. T. plumbea Lee, Proc. Acad. Nat. Sc. Phila. 1868, 364 (Baridius). 

 Maryland, one specimen. Much smaller than B. trinotata, more finely 



and less densely pubescent above and beneath, with the scales oval only 

 upon the flanks of the prothorax; there are no denuded basal spots. The 

 elytral striae are deeper. Length 3 mm.; .12 inch. 



AULOBARIS n. g. 



I have separated as a distinct genus some specimens from the Atlantic 

 slope, which difter from Bar is proper by the more slender antennae; the 

 first joint is scarcely stouter than the second, and the latter is quite as long 

 as the first; the remaining joints (3-7) are gradually slightly wider and the 

 club is elongate-oval, uniformly pubescent except at the base of the first 

 joint, and not large. The beak is longer than the prothorax, cylindrical, 

 slightly compressed towards the base, and not very slender. The front 

 coxa; are rather widely distant, and the presternum is deeply and broadly 

 sulcate in front. 



The body is more convex than usual in Baris, though in this respect, the 

 species resemble Pseudobaris farcta. The under surface is coarsely punc- 

 tured, with a small white hair in each puncture. 



These species represent group B of my synoptic table in Proc. Ac. Nat. 

 Sc. Phil. 1868, 364, and may be distinguished as follows: 



