242 CUKCULIOISriDJE. [income. 



3. A. porosus, n. sp. 



Similar in form to A. basalts, but larger; the beak is longer, and dis- 

 tinctly carinate; head covered with pale scales extending upon the beak; 

 front channeled. Prothorax very deeply and densely punctured, finely cari- 

 nate, irregularly clothed with brown scales. Elytra with rows of approxi- 

 mate large quadrate punctures, the intervals between which are nearly 

 sis high as the interspaces; second, fourth and sixth interspaces wider and 

 more convex, tesselated with spots of pale and dark brown ; rest of the sur- 

 face with scattered pale scales. Beneath coarsely and deeply punctured, 

 thinly clothed with pale scales; legs annulated. Length 8mm.; .32 inch. 



Two specimens from Colorado; one collected by myself, the other in the 

 cabinet of Dr. Horn. 



4. A. turbidus, n. sp. 



Rather'narrow, black, densely clothed with thick dirt colored scales, 

 Beak naked, punctured, subcarinate; head densely clothed with small scales, 

 front channeled. Prothorax deeply and densely punctured as usual, not 

 carinate, longer than wide, narrower in front than at base; sides broadly 

 rounded. Elytra with rows of large, approximate, quadrate punctures, in- 

 terspaces wide, somewhat convex ; markings indistinct, but when present,, 

 consisting of an irregular basal fascia, and an undulated one behind the 

 middle, very much as in A. basalts. Under surface deeply and coarsely 

 punctured, thinly clothed with dirt colored scales. Length 7 mm. ; .28 inch. 



Arizona, Dr. Horn; several specimens. Related to A. basalts, but nar- 

 rower, and with differently colored scales. 



5. A. clathratus, n. sp. 



Narrow, black, clothed with dirt colored scales. Beak rather stouter,, 

 punctured and subcarinate, head covered with small scales extending upon 

 the beak, front channeled. Prothorax as in the preceding. Elytra with 

 rows of large, approximate, quadrate punctures, which almost overlap, so 

 that the interspaces are very narrow and indistinct. Body beneath coarsely 

 and deeply punctured, thinly clothed with dirt colored scales. Length 4.7 

 mm.; .19 inch. 



One specimen found by me in Colorado. Differs from the preceding by 

 the larger punctures of the elytra, and narrower interspaces. 



(). A. carinatus, n. sp. 



Black, densely covered with thick scales, of dark brown color; mottled 

 (but not tesselate) with pale scales upon the elytra, forming indistinct trans- 

 verse lines; an oblique zigzag band about the middle is the most conspic- 

 uous of these markings. Prothorax as long as wide, sides strongly rounded, 

 widest about the middle, much narrowed in front, broadly but not deeply 

 constricted near the tip; disc coarsely and densely punctured, very dis- 

 tinctly carinate. Elytra at the widest part scarcely wider than the middle 

 of the prothorax; oval, sides rounded, basal angles not prominent; striae 

 composed of quadrate large punctures; interspaces distinctly defined; third, 



