126 GEO. H. HORN, M. D. 



A. cinctns, Lee. (Anthocomus), Proc. Acad. 1852, p. 166; {Attains), List, p. 

 53. — Black, abdomen pale yellow. Head black, anteriorly pale yellow. Thorax 

 black, shining, base narrowly margined with yellow. Elytra black, slightly 

 pubescent, lateral and apical margins and suture narrowly bordered with yel- 

 low. Legs pale yellowish testaceous. Length .12 inch; 3 mm. 

 Occurs near Fort Yuma, California. 



A. difiicilis, Lee. (Anthocomus), Proc. Acad. 1852, p. 166; (Attalus), List, 

 p. 54. 



Closely allied to the preceding and differs as follows : Body beneath 

 and abdomen black. Thorax at base and sides narrowly bordered 

 with yellow. Elytra black, glaucous, not (?) pubescent, suture at 

 base, apex and lateral margin near humerus bordered with yellow. 

 Legs as in circumscriptus. Length .14 inch; 3.5 mm. 



Occurs with the preceding. 



A. lobulatus, Lee. List, p. 54; lobatus || Lee. (Anthocomus), Proc. Acad. 

 1852, p. 166. 



One of our smallest species, closely allied to the preceding two, but 

 rather more slender and with the sides of the elytra, apex and suture 

 more broadly margined with yellow. The head is sometimes totally 

 black, and the thorax at sides more broadly yellow. The legs are 

 pale testaceous. Length .07 inch; 2 mm. 



Occurs on the borders of the Colorado Desert of California. 



A. seincetus. Say, (Malachius), Journ. Acad, v., p. 170; Erichs. (Antho- 

 comus), Entom. p. 109; Lee. Proc. Acad. 1852, p. 166; Lee. (Attalus), List, p. 

 54 ; infuscatus, Motsch. (Scalopterus), Bull. Mosc. 1859, iv., p. 407. 



A species easily known by its livid testaceous color. Head usually 

 black, anteriorly testaceous. Thorax with discal spot black. Elytra 

 livid, suture and lateral margins often brownish. Body beneath and 

 legs yellowish, metasternum black. Length .12 inch; 3 mm. 



The sutural and lateral brownish spaces become at times broader so 

 that the pale color is reduced to a narrow oblique stripe from the 

 humerus to apex, and in this case forms the variety infuscatus. 



Rather abundant over our entire territory east of the Rocky Moun- 

 tains. 



One species I have not been able to place in any of the preceding 

 genera. 



Ebseus submarginatus, Lee. Proc. Acad. 1852, p. 167; List (Ebozusl) 

 p. 54. — Longiusculus, seneo-niger, tenuiter pubescens, thorace subtiliter alu- 

 taceo, non transverso, versus basin angustato, basi rotundata obsolete rufes- 

 cente, elytris vix dilatatis depressiusculis, obsolete rugosis, abdomine breviori- 

 bus. Long. .06 unc. ; 1.5 mm. 



