TI1K 



D1V1NC I! !: KTU'S. 



the margins; elytra with the margin broadly yellow and. usually with a 

 sub-basal yellowish band from which extend backward four or five narrow 

 dull yellow lines; under surface dark piceous, the prosternum paler. Length 

 12.5-14 mm. 



Lake and Steuben counties; rare. May 27-August 16. 



455 (1478). HYDATICUS LVIPENNIS Thorns., Op. Eut., Ill, 324. 



Elongate-oval, subconvex. Piceous above and beneath; front of head, 

 thorax except a basal cross-bar, front and middle legs and antenune reddish- 

 yellow ; side margins of elytra dull brownish-yellow; middle tibia? piceous. 

 Dorsal rows of punctures distinct. Female with tips of elytra slightly pro- 

 duced and subsinuate. Length 12.5 mm. 



One male in Field Museum collection from "Itid.," probably 

 St. Joseph County. The dark basal cross-bar of thorax is widest at 

 middle and tapers to a line each side. 



H. biniargmatus Say, 12 mm. in lenglli, occurs From Ohio to 

 Georgia and Florida. 



XXI. ACILIUS Leach. 1817. (L., a Roman name.) 



Medium-sized subdepressed species, slightly obovate in 

 form, and having the upper surface distinctly and regu- 

 larly punctate; thorax not margined; hind coxas very 

 large. Females with elytra, either sulcate or smooth. 

 Males with front tarsi broadly dilated, with one large and 

 two small disks beneath, the middle tarsi simple, the Fjg 118 

 hind claws equal. (Fig. 118.) Two species have been < After Com8tock -> 

 taken in Indiana, while one other may occur. 



KEY TO INDIANA SPECIES OF ACILH S. 



a. Vertex with a distinct M-shaped black mark ; sulci of female elytra un- 

 equal in length, the outer ones longer and reaching nearly to base. 

 &. Hind femora reddish-brown; length 12.5-14 mm. 



456. SEMISULCATVS. 



W). Hind femora black ; length 12 mm. MEDIATUS. 



<KI. Vertex without an M-shaped mark ; sulci of female subeqnal in length 

 and reaching only to middle of elytra; length 13-15 mm. 



457. FRATERNUS. 



l.">i; (1402). ACILIUS SEMISULCATUS Aube, Spec. Gen., 



VI. 1838, 132. 



Broadly oval or obovate. Dull brownish-yellow above ; 

 head with base and an M-shaped mark on vertex 

 black; thorax with two transverse black lines on 

 disk, the front one the wider; elytra closely marked 

 with black dots and with snbapical yellowish cross- 

 bar. Length 12.5-14 mm. (Fig. 110.) 



Fie. 119 x 2. 

 (Aftw Wickhaiu.) 



Lake, Marshall, Marion and Vigo counties; 

 I'requent. June 12- August 15, 



