I^cConte. 



ORYPTORHY^CHINI. 241 



7. Prothorax carinate, bristles short 8. 



" not carinate 9. 



8. Basal angles of elytra not prominent 6. carinatus. 



" " " well defined 7. granosus. 



'.). Bristles stout, clavate 10. 



" soft, slender 8. sordidus. 



10. Elytra with basal and broad posterior band of yellow 



scales 11. 



Elytra with small white spots arranged in two inter- 

 rupted bands 9. clavatus. 



11. Elytra rounded on the sides 10. crassulus. 



' ' nearly parallel, form elongate 11. longulus. 



12. Prothorax not channeled, occiput clothed with white 



scales 12. nuchalis. 



Prothorax channeled, head uniform brown 13. pectoralis. 



1. A. nob ills, n. sp. 



Black, coarsely punctured, with thick, erect brown scales, which when 

 viewed in certain directions seem like short, obtuse bristles. Beak shining, 

 naked, punctured; head densely clothed with small pale scales, frontal 

 fovea large. Prothorax as long as wide, much rounded on the sides, nar- 

 rowed before and behind; punctures very deep, disc convex with a faint 

 trace of a median carina. Elytra with rows of deep, large, but rather dis- 

 tant oval punctures; interspaces very convex, except the two outer ones; 

 there is a single marginal point behind the humeral angle; the white mark- 

 ings are conspicuous, of snow-white scales, as follows: a spot on the fifth, 

 sixth and seventh interspaces near the base, connected with two small spots 

 on the fourth, forming a sub-humeral blotch; a band behind the middle, 

 composed of spots on the first to the fourth interspace; and many small 

 spots irregularly disposed, formed of three or four white scales. Legs annu- 

 lated with brown and pale scales. Ventral segments with a row of lateral 

 spots of pale scales. Length 7.8 mm. ; .31 inch. 



Texas; Messrs. Boll and Belfrage; three specimens. Mr. Ulke has a 

 species from Florida similar to this, but stouter, with the sides of the elytra 

 angulated near the base. " 



2. A. basalis, n. sp. 



Similar to the preceding, but smaller and less robust. Beak more strongly 

 punctured, carinate; head covered with pale scales, extending half way 

 upon the beak, front channeled. Prothorax with small, scattered spots of 

 pale scales. Elytra with the suture, a transverse band at the base, enclos- 

 ing a black humeral spot, and some scattered small spots of pale brown 

 scales; stria? comjxjsed of more approximate quadrate punctures, inter- 

 spaces except the two outer ones convex. Body beneath more coarsely and 

 deeply punctured than in A. nobilis, and thinly clothed with pale scales, 

 rather more dense at the sides of the ventral segments. Legs annulated. 

 Length 5.5 mm. ; .32 inch. 



One specimen collected bj- me in Colorado. 



PROC. AMBR. PHILOS. SOC. XV. 96. 2e 



