LAMELLICORNIA — COPKIDAE. 



Sinodendron, 



Black, shiny. Elytra roughly punctured, with indistinct 

 striae. Male with a long curved horn on head, front of 

 thorax cut off obliquely, with five teeth. L. 4| — 6 1. Com- 

 mon. 8. cyli7idricum, Lin. 



COmiDAB, 



A. Labial palpi with first joint much longer than second, 



third joint distinct. 



Anterior tarsi present ; joints of posterior tarsi gradually 

 diminishing in length and breadth. Copris, Geoffr. 



S. Labial palpi with first joint shorter than second ; third 



extremely small. 



Anterior tarsi present ; first joint of posterior tarsi elon- 

 gate. Onthophagiis, Latr. 



Copris, 



Black, shiny. Head with a horn (long in male, short in 

 female) ; thorax sloped in front, strongly bordered at base, 

 with a central furrow ; elytra with notched striae, inter- 

 stices slightly arched ; last dorsal segment of abdomen 

 rather closely punctured. L. 7 — 10 1. Eather common. 



C. lunar is, Lin. 



Onthoph af/us. 



A, Head with one or two horns in male ; length 2| — 5 

 lines. 



a. Elytra unicolorous black. 



J. Thorax rather diffusely and finely punctured ; 

 male with two long curved horns on head. 



Black, dull ; thorax usually slightly greenish. Head 

 somewhat oblong, rounded in front ; elytra Avitli feeble 

 punctured striae ; interstices even, diffusely punctured. 

 Female with two straight, transverse ridges on forehead. 

 L. 3 1 — 5 1. Eare. 0. taurus, Lin. 



IT. Thorax closely punctured, granulate ; male with 

 vertex of head prolonged into a plate, narrowing 

 into a horn, bent forward. 



Black, dull, thorax sometimes greenish. Elytra Avith 



