416 APPENDIX. 



[LeConte. 



Tarsi with the third joint less broadly dilated ; cush- 

 ions narrow, imperfect on the first and second joints.. 2. 

 C. Tarsi with the tliird joint very broadly dilated and 



more deeply bilobed; cushions of under surface complete 3. 



2. A. Beak cylindrical, carinate for part of the length : 

 Body very elongate, sides of prothorax straight, elytra 



acuminate at tip ; pubescence coarse and dense 1. pleuralis. 



Body less slender, pubescence short and fine, with 

 longer hairs intermixed, scutellum distinct, tips of 



elytra acutely rounded mixtus. 



B. Beak stouter, less cylindrical, very indistinctly ca- 

 rinate 4. 



1-2. Lixus mixtus, n. sp. 



Elongate, not very slender, black, pruinose with very fine short gray pu- 

 bescence, with longer suberect hairs intermixed. Beak rather stout, cylin- 

 drical, finely but strongly punctured, with a short longitudinal groove be 

 tween the antennae, and a deep frontal fovea ; between these points it is 

 distinctly carinate ; thinly pubescent, with suberect hair, nearly naked at 

 the tip. Head punctulate, with scattered larger punctures which extend 

 upon the basal part of the beak ; antennsB inserted one-third from the tip, 

 black, funicle as in L. pleuralis. Prothorax scarcely longer than wide, 

 narrowed from the base forward and rounded at tlie sides, convex, bisinu- 

 ate at base, medial lobe broad, prolonged, obtusely angulated ; disc densely 

 punctulate, with large shallow punctures not densely placed ; vaguely and 

 broadly longitudinally impressed from the middle to the base : there is a 

 broad lateral stripe, and two indistinct dorsal ones of denser gray hair. 

 Scutellum small, but distinct. Elytra separately rounded at the base, the 

 curvature being continued to the sides, so that the humeral angles are in- 

 distinct, sides parallel, rounded behind ; tips separately acutely rounded, 

 with a small tuft of hair which gives them the appearance of being sub- 

 acuminate ; broadly impressed near the base, which causes the basal margin 

 to become obtusely elevated ; striae composed of distant round punctures ; 

 sides with a broad stripe of denser pubescence. Beneath clothed with gray 

 pubescence, coarsely and sparsely punctured. Length 10 mm.; .40 inch. 



Colorado, one specimen, which I owe to the kindness of Mr. B. D. Smith. 

 At first sight this species greatly resembles L. placklus (p. 159), but the 

 characters are very different. 



p. 154 in tables of Lixus modify No. 11 as follows : 



11. Scutellar angle of prothorax very obtuse 11'. 



" " " produced, acute, basal 



excavation small, deep fossus. 



11'. Prothorax with shallower punctures 8. punctinasus. 



" " few deep " ; (smaller).... 9. parous. 



7-8. Lixus fossus, n. sp. 



Black, pruinose with cinereous very short hair, and mottled with small 



