THE SHORT-WINGED SCAVENGER BEETLES. 



417 



nrir. Antennae shorter than head; length less than 2 mm.; basal 

 joint of hind tarsi equal in length to the next two together ; 

 third joint of maxillary palpi more or less hatchet-shaped, 

 the fourth very minute; fifth ventral not elongated, wider 

 than long. LY. Leptogenius. 



da. Fourth joint of hind tarsi bilobed. 



p. Last joint of maxillary palpi obtuse and pubescent; reddish-yellow, 

 elytra dark blue, head and tip of abdomen black. L-VL Pjsdebus. 

 pp. Last joint of maxillary palpi slender, very minute. 



q. Thorax oval, usually longer than wide; elytra usually longer than 

 thorax : form linear ; neck moderately narrow ; length not over 

 5 mm. LYII. Sunius. 



qq. Thorax almost circular, distinctly longer than elytra; neck very 

 slender ; color uniform pale yellow ; length less than 3 mm. 



LVIII. Stilicopsis. 



XLIII. Cryptobitjm Mann. 1830. (Gr., "hidden + life. ") 



Rather large, elongate, parallel species having the gular sutures 

 separated ; elytra with a fold or raised line near the side margin, ex- 

 tending from the humeri to the outer spical angle ; neck distinctly 

 and abruptly constricted above: basal joint of antennas greatly 

 elongated; front tarsi not dilated. The males always have a fold 

 at the middle of the second, and a pit or fovea on the third ventral 

 segment, and the last ventral is unmodified. In some of the species 

 the males are of two forms ; one , 2 3 



having, in addition to the fold x^Jj^ WTPl KX?^ 



and fovea, the third segment 

 prolonged backward in a lobe 

 which varies much in length. 

 (Fig. 162.) Casey has created a 

 new name. 1 ' Gastrolobiiim, ' ' for 

 the species possessing the char- Fig. 162. 

 aeters above mentioned, but I 

 have retained the older and better known name. The following 

 species have been taken or probably occur in the State : 



C. badium : 1, complete male; 2, imperfect 

 male; 3, female. (After Horn.) 



KEY/ TO INDIANA SPECIES OF CRYPTOBITJM. 



a. Second ventral of female with a pit or short transverse fovea near its 

 middle. (Fig. 102. No. 3.) 



b. Abdomen uniform dark brown or piceous : third joint of antennas dis- 



tinctly longer than second ; length 10-12 mm. SOI. badium. 



bt). Abdomen bicolored, piceous, with the last two segments pale reddish- 

 brown ; length 8-10 mm. 802. bicolob. 

 a a. Second ventral of female simple, without pit or fovea. 



c. Abdomen bicolored. the last two segments paler. 



d. Head and meso- and metasterna pale reddish-brown. texanum. 



