LeConte.] 



PHYTOl^OMrXI. 



129 



4. Beak stout, strongly carinate and sulcate 11. sulcirostris 



" as usual, slightly " " " 5. 



5. Frontal fovea obsolete ; form more elongate.. 12. nebulosus. 



" " deep ; " less " .. 13. frontalis. 



6. Prothorax intricately rugose, sub-granulate, 



with scattered large punctures 14. oregonensis. 



Prothorax deeply, coarsely and densely punc- 

 tured 7. 



7. Sides of prothorax broadly rounded 8. 



Sides " strongly " 16. cribricoUis. 



8. Beak feebly carinate and sulcate, frontal fovea 



faint 15. latiusculus. 



Beak strongly carinate and sulcate, frontal 



fovea deep 17. impressifrons. 



9. Setse of ordinary length 10.. 



" longer and clavate 18. setosus. 



10. Frontal fovea deep, punctiform 11. 



" " obsolete 12.. 



11. Color mottled 19. punctiger. 



" nearly uniform 20. teretircstris. 



12. Prothorax longer than wide, not vittate 21. gracilis. 



" more rounded and broader, vittate 22. nevadicus. 



1. L. obliquus, n, sp. 



Black, densely clothed with small rounded scales, which become larger 

 on the prothorax, and narrower, smaller and hair-like upon the head. 

 Beak as long as the prothorax, stout, slightly curved, carinate, dis- 

 tinctly sulcate at the side ; frontal fovea deep. Prothorax nearly 

 square, sides parallel for three-fourths the lengtli; then suddenly rounded 

 and narrowed at tne apex; sides and narrower dorsal line pale-brown, disc, 

 flanks and apical spots each side darker; surface with large scattered 

 blackish dots. Scutellum pale. Elytra broadly emarginate at base, humeri 

 oblique, gradually narrowed on the sides, obliquely declivous behind, sub- 

 apical callus very prominent, conical, obtuse ; strise finely impressed, 

 coarsely punctured, interspaces broad and flat; the scales are brown on the 

 disc from the base for two-thirds the length, and from the suture to the 

 third stria ; also upon the inflexed flanks and near the callus ; elsewhere 

 they are pale-brown, and there is an oblique dark stripe upon the fourth 

 and fifth interspaces in front of the middle; the seta? are very sparse and 

 short. Beneath the scales are of the darker brown tint, with a few large 

 blackish punctures similar to those upon the prothorax. Length 9.2 mm. ; 

 .36 inch. 



9. Last ventral segment with a short deep channel at the tip; each 

 elytron prolonged at the apes into a short conical process. (^ unknown. 



Two 9 ; Texas; Belfrage. 



2. L. sordidus (Gyll.), Sch. Cure, ii, 280, (Listroderes); t L. duting- 

 uendusGyW., ibid, ii, 281. 



PROC. AMER. PIIILOS. SOC. XV. 90. Q 



