942 FAMILY L. SCARABJEID;E. 



dd. Elytral tubercles oblong, the front portion of each without hairs. 



1779. ASPER, 



bb. Elytra with rows of tubercles much less distinct, wholly without 



hairs. 



e. Sides of thorax near the hind angles rather deeply notched ; ely- 

 tra not distinctly tuberculate. 1780. SUBEROSUS. 

 <<. Sides of thorax not or very feebly notched; elytra with well 

 marked rows of smooth tubercles. PUNCTATUS. 

 ca. Scutellum oval, never spear-shaped ; size smaller, not over 12 mm. 



/. Tip of prosternum behind the front coxae not spiniform ; hairs of ely- 



tral intervals, when present, in tufts, never in single row. 

 g. Hind femora with a row of small spines along the hind margin ; 

 thorax with a median groove, limited on each side with an ob- 

 tuse ridge ; elytral tubercles with erect setae or bristle-like hairs ; 

 length 9-10 mm. 1781. TUBERCULATUS. 



////. Hind femora without spinules. 



//. Elytral tubercles with black setoe. 



/. Tubercles elevated, the setae erect, moderately long ; length 

 6-7 mm. 1782. ERINACEUS. 



n. Tubercles indistinct, setae very short ; length 9-10 mm. 



17S3. CAPILLARIS. 



Jih. Elytral tubercles with reddish-brown or pale hairs or scales. 

 j. Elytra distinctly tuberculate ; thorax with well marked ridges. 

 7c. Thorax silicate at middle, the ridges straight or nearly so. 

 I. Elytral margins entire at base ; length 10-12 mm. 



1784. UNISTRIATUS. 



//. Elytral margins crenulate or with small teeth at base; 



length 6-8 mm. 1785. SORDIDUS. 



A7r. Thorax with the median groove divided into two foveae or 



pits, the ridges very sinuous; length 5-6 mm. 

 in. Tubercles of elytra with erect brownish setae. 



1786. INSULARIS. 



mm. Tubercles with pale yellowish scale-like hairs. 



1787. TERRESTRIS. 



;/./. Elytral tubercles very indistinct, being replaced by patches of 



setae. 



u. Front tibiae without fine teeth above the tooth on side; tufts 



of setae on elytra of equal size in all the rows ; length 6- 



6.5 mm. 1788. ^EQUALIS. 



nn. Front tibiae with fine teeth near the base; tufts of seta? on 



elytra much smaller on the alternate rows ; length 5-6 mm. 



1789. SCABER. 



//. Tip of prosternum spine-like behind the coxae; elytral intervals with 

 a single row of short, erect seta?; front tibiae bidentate on the outer 

 side and crenulate near the base. 1790. ATROX. 



1777 (5613). TKOX SCABROSUS Beauv.. Ins. Afr. et Amer., 1805, 175. 



Oblong-oval, robust. Dull blackish-brown or piceous ; labruin and mandi- 

 bles and basal joint of antennae clothed with stiff brown hairs. Thorax 

 with sides rounded, deeply and broadly notched near hind angles, the lat- 



