NORTH A.MKIIK'AN COLKOl'TEUA. 1')!! 



border. From Arizona and Texas specimens occur with the elytra much 

 smoother and more shining and without the usual spots. Tliese are the 

 variety liitcipenms Lee. 



Occurs from the ^liddle States to Arizona. 



.4. centralis Lee. — Form moderately robust, testaceous; head rufescent, 

 thoracic triangular space, suture and margin of elytra brownish; head densely 

 punctured ; clypeus slightly broader at base, the margin narrowly reflexed ; thorax 

 transverse, narrowed in front; sides arcuate, base distinctly margined, except 

 sometimes at middle; surface very sparsely and finely punctured, testaceous, with 

 an irregular triangular brown space, the base at the apical margin; elytra with 

 regular striie of moderately coarse punctures, somewhat confused near the suture, 

 the intervals nearly equal, not elongated ; prgidium sparsely, obsoletely punctured : 

 body beneath sparsely punctate, pectus and coxal plates hairy. Length ..S6— .44 

 inch ; 9 — 11 mm. 



The claw joint of the front tarsus is toothed beneath ; the anterior claw is flexed 

 at base, the tip unequally cleft, the upper portion more slender and shorter than 

 tlie lower; the anterior middle claw is nearly equally cleft at tip. 



The specimens from whicli the species was originally described were 

 collected in the Peninsula of California. They are of the smaller size 

 indicated above. The thoracic spot is (|uite regularly triangular. The 

 suture at base is very narrowly brown ; at the apical half that color be- 

 comes broader, and continues around the apex and side to the humeral 

 umbone. From Arizona and Sonora the specimens referred to this spe- 

 cies are somewhat longer, the thoracic spot more extended. The scutel- 

 lum is often darker, but the suture and side margin of the elytra are 

 extremely narrowly bordered with fuscous. The species can hardly be 

 mistaken for any other in our fauna, as its characters are quite constant. 

 Occurs in Arizona, Sonora, and the Peninsula of California. 



A. niiiiuta Burm. — Form oval, rather robust, color very variable, sometimes 

 entirely black, often more or less testaceous, with a large thoracic space and trans- 

 verse elytral fascise piceous; head moderately densely punctured ; clypeus nearly 

 semi-circular in outline, the sides divergent posteriorly, the margin narrowly re- 

 tlexed ; thorax transverse, convex, narrower in front; sides arcuate, base mar- 

 gined ; surface coarsely and rather deeply, but not densely punctured ; elytra, with 

 strise, of coarse, deep, closely-placed punctures; those near the suture somewhat 

 confused, the intervals equal, not at all elevated ; pygidium rugulose in front, 

 smoother at apex ; body beneath coarsely and s[)arsely punctured, not hairv. 

 Length .2fi — .HO inch ; 6.5 — 7.5 mm. 



The claw joint of the front tarsus is very distinctly toothed beneath when viewed 

 laterally ; the claws are stout and large, the anterior deeply cleft at tip, the two 

 j)ortions very nearly equal ; the front claw of the middle tarsus is feebly cleft at tip, 

 tile two portions nearly equal. 



As indicated above, the species is extremely variable in color. In the 

 .specimens which are black or jiiceous. the abdomen is :ihvavs rufe.>Jcent. 



