186 AMERICAN COLEOPTERA. 



Group Villa. 

 Following the Horn system of classification the three fol- 

 lowing species must constitute a separate group between 

 VIII and IX, because of the presence of four denticles in 

 addition to the principal tooth of the hind femur. These 

 three species may be separated as below. 



Second antennal joint about three-fifths as long as the third, body 

 throughout piceous, pubescence dark brown variegated with 

 whitish and ochreous spots and lines ; Size very large — 5-14 

 mm. (Brownsville, Texas ; Lower California.) 



julianus Horn. 



Second and third joints of antennae subequal, color brown or ferruginous. 



Pubescence brown, whitish and ochreous, elytra with a conspicuous 



ochreous line at the middle of the third interspace ; length 



4f mm. (Arizona.) ochreolineatus n. sp. 



Pubescence of elytra luteous, either nearly uniform or more often 

 with some denuded spots which appear darker ; length 3 

 mm. (Brownsville, Texas.) quadridentatus Schf. 



B. julianns Horn. 



The dentiform elevations at the base of the elytra, on which 

 Mr. Schaeffer was inclined to lay some stress, are by no 

 means peculiar to this species, although more evident than 

 usual because of its large size. I have observed them in 

 ochreolineatus ; chinensis, protractus, tilkei, prosopis, amicus and 

 placidus. They arise at the base of the intermediate striae 

 and vary much in their development individually. 



B. ochreolineatus n. sp. 



Robust, reddish-brown, irregularly marmorate with cinereous and 

 ochreous or brownish pubescence, so disposed as to leave at the mid- 

 dle of each elytron an irregular transverse dark area which is wider ex- 

 ternally. There is a conspicuous yellow line at the middle of the third 

 interspace, a shorter one opposite the anterior end of this on the fifth 

 interspace, and three small basal spots of same color on each elytron. 

 Prothorax with slightly yellowish cinereous pubescence at sides and a 

 rather narrow line of ochreous hairs at middle. Antennae ( 9 ) rufous, 

 a little darker apically, scarcely reaching the base of the elytra, strongly 

 incrassate, scarcely serrate, penultimate joints about twice as wide as 

 long. Eyes moderately large, emarginate to middle, separated by a 

 distance which is about four-fifths their own width. Head densely 

 punctate, median line of front carinate and narrowly smooth. Pro- 

 thorax a little wider than long, sides strongly convergent and nearly 



