26 INSECTA. 



M. Leon Dufour remarks that the dig-estive canal of the Hopliae is 

 much shorter than that of the Cetonige, The chylific ventricle is 

 smooth and flexuous. The small intestine is shorter than in Melo- 

 lontha, and frequently presents an ovoid inflation at its origin. It is 

 followed by an elongated colon, destitute of valvular anfractviosities. 

 The rectum is separated from it by a well-marked collar. The or- 

 gans of generation hardly differ from those of Melolontha. 



DxcRANiA, Lepel. and Serv. 



Two equal and bifid hooks to all the tarsi, the first joint of the two 

 anterior ones prolonged inferiorly into a hooked tooth ; the body veiy 

 smooth and without scales ; the scutellum tolerably large ; two stout 

 spines at the extremity of the four posterior tibiae ; the inferior ex- 

 tremity of the two last tibiae dilated. These Insects inhabit Brazil *. 



HoPLiA, Illig. 



A single hook to the two posterior tarsi ; the two of the others un- 

 equal and bifid ; extremity of the four last tibiae crowned with small 

 spines, none of which is perceptibly longer than another. The body 

 is nearly square or almost semicircular, and the thighs of the two 

 posterior legs are moderately inflated, their tibiae long, straight, and 

 without a hooked tooth at the extremity. 



H. formosa, Illig. ; Melolontha farinosa. Fab. ; Oliv., Col., I, 

 5, ii, 14, a, c. Nine joints in the antennae ; the body entirely 

 covered with brilliant silvery scales, the upper ones reflecting a 

 violet blue tint; the lower ones somcAvhat greenish or gilt. — 

 This most beautiful of all the known species is common in the 

 south of France along the banks of brooks and rivers. 



The antennae of some others are composed of ten joints f. 

 The 



MONOCHELES, Illig. 



Only differs from Hoplia in the epistoma, which forms a triangle 

 truncated at the anterior extremity, and in the two posterior legs, of 

 which the thighs are very large and the tibiae short, with a stout 

 hooked tooth at the extremity |. 



Certain Scarabaeides, closely allied to the last of the preceding 

 section, and which were at first united with them in the genus Melo- 

 lontha, but in which the paraglossae, or two divisions of the ligula, 

 project beyond the superior extremity of the mentum, and where the 

 elytra gape or are slightly remote on the side next the suture, at their 

 posterior extremity, which is either narrowed into a point or rounded, 

 form a fifth section, that of the Anthobh. 



The antennae are composed of nine or ten joints, the three last of 

 which alone form the club in both sexes. The lobe terminating the 

 maxillae is frequently almost membranous, silky, penicilliform, cori- 

 aceous, and dentated along the inner edge in others. The labrum 



• Encyc. Method., article Scarabeides. 



f See Latr., Gener. Crust, et Insect., II, p. 115. 



X Encyc. Method, article Scarabeides. 



