092 



FAM ILY L. SCARABA-:ID_;E. 



1852 (5871). LIGYRUS RELICTUS Say, Journ. riiil. Acad. Nat. Sci., V, 



194; ibid. II, 296. 



Oblong, very robust. Pic-eons black, shining. Trans- 

 verse carina of head interrupted at middle; clypeus 

 with two teeth. Thorax strongly convex, hind angles 

 broadly rounded, surface finely and sparsely punc- 

 tured. Elytra with rather fine punctures, those of 

 center of disk arranged in three double rows ; those 

 on sides and near suture much confused. Male with 

 inner claw of front tarsi thickened, dilated and ab- 

 ruptly curved. Length 18-23 mm. (Fig. 410.) 



Throughout the State, frequent; more so 

 about the sandy lake shores of the northern coun- 

 ties. May 2 6- August 26. Occurs at electric 

 light and beneath rubbish. The larva? live in old. 

 well-rotted manure piles. 



1825, 



Fig. 410. X I 

 (After Knobel. 



XXXII. APHONUS Lee. 1858. (Or., "without 4- voice.") 



The untoothed mandibles and the lack of stridulating organs on 

 the under surface of the elytra are the principal diameters separat- 

 ing this genus from Li<ji/n<x. In our species the tip of the clypeus 

 is elevated, and immediately behind it is a sharp, transverse ele- 

 vated line which bears three blunt teeth. One of the four recog- 

 ni/rd species has been taken in the State. 



185:5 (5874). Arnoxrs TRIDENTATI s Say. Journ. Phil. Acad. Nat. Sci.. Ill, 



1823. 209; ibid. II. KM. 



Oblong-ovate, robust. Black or pic-eons-black, shining; beneath dark 

 reddish-brown. Thorax about one-third wider than long, strongly convex, 

 sides feebly curved, hind angles obtnse, basal margin sinuate; surface finely 

 and sparsely punctate. Elytra striate. the stri:e with rows of rather fine 

 punctures; intervals subconvex. irregular in width and with scattered 

 coarse punctures. Length 13-10 mm. 



Putnam, Vigo, Floyd and Posey counties; scarce. May 10- 

 July 29. Occurs about old decaying stumps in which the larva? 

 live; also at light. 



XXXIII. XYLORYCTES Hope. 1837. (Gr. 



' ' wood + a digger. ' ' ) 



This genus contains a single large bulky 

 form, having the mandibles prominent, not 

 toothed on the outer side ; the male with a 

 long curved horn arising from the middle of 

 the head, whence the common name of "rhi- 

 noceros beetle. " 



1854 (5880). XYI.OKYCTKS SATYKTS Fab.. Syst. 



Eleut.. I. 1801. 15. 

 ( Milong, rubust. Dark chestnut to pic-eons brown. 



Fig. 411. Male. Natural size, 

 f After Glover. J 



