12 insecta. 



hairs ; the last joint of the maxillary palpi is not larger than the pre- 

 ceding one, while the same of the lahial palpi is longer ; the mentum 

 is profoundly emarginated ; the anterior tibiae are elongated, their 

 external side is furnished with numerous teeth, and the extremity on 

 the opposite side with a single spur or spine ; the epistoma is lozenge- 

 shaped. 



Sometimes the thorax of the male is armed with horns. They are 

 the Ceratophyus of Fischer, or Armidens, Ziegler. 



G.typhcBUs; S. typhceus, L. ; Oliv., Col. I, 3, vii, 52. Black; 

 three projecting black horns before the thorax of the male, of 

 which the intermediate is the shortest ; elytra striated. In high 

 and sandy localities. 



G. momus ; S. mo7nus, Fab. This species, discovered in 

 Spain by Count Dejean, differs from theTyphaeus in the smooth- 

 ness of the elytra ; it is otherwise similar. 



G. dispar ; Ceratophyus dispar, Fisch., Entoraog. Russ. Imp., 

 II, xviii. A horn on the head and thorax. Italy and Russia. 

 Sometimes both sexes are destitute of horns. They are the Geo- 

 trupes proper. 



G. stercorarius ; Scarabceus stercorarius, L. ; Oliv., lb. V, 39. 

 A shining black or deep green above, violaceous or golden 

 green beneath ; a tubercle on the vertex ; dotted bands on the 

 elytra, with smooth intervals ; two indentations at the base of 

 the posterior thighs. 



G.vernalis ; Scarab. vernalis,li.\ Oliv., Ib„ iv, 23. Shorter 

 t an the stercorarius, and approximating to a hemispherical 

 figure ; a violet or blue-black ; antennae black ; elytra smooth. 



OcHODffius, 3Ieg. — Melolontha, Fab. 



The labrum in this subgenus is strongly emarginated, and almost 

 in a form of a heart truncated posteriorly. The mandibles are in the 

 form of an elongated triangle, one of them terminating in a simple 

 point, with a notch beneath, and the other in two obtuse teeth. 

 The exterior lobe of the maxillae is bordered Avith little spines or 

 stout cilia hooked at the end and two small horny and equal inner 

 teeth ; the other, or internal lobe, is formed by a pointed pencil of 

 hairs. The last joint of their palpi is cylindrical, and much longer 

 than the penultimate ; the second of the labial palpi is larger than 

 the others, and the following, or last, in the form of a truncated ovoid. 

 There are but two teeth on the exterior side of the anterior tibiae, 

 and two spines may be observed on the extremity of the opposite 

 side, of which the inferior is the smallest. The body is less elevated, 

 in proportion, than that of the other Geotrupes, and is destitute of 

 horns *. 



Those Geotrupes, in which the antennal club is large, orbicular or 

 nearly globular, and whose first and last leaflet when contracted com- 



* Melolontha chrysomeUna, Fab. ; Panz,, Faun. Insect. Germ., XXXIV, 2. 



