26 INSECTA. 
M. Leon Dufour remarks that the digestive canal of the Hopliz is 
much shorter than that of the Cetoniz, 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 anfractuosities. 
The rectum is separated from it bya well-marked collar. The or- 
gans of generation hardly differ from those of Melolontha. 
DicraniA, 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 very 
smooth and without scales; the scutellum tolerably large ; two stout 
spines at the extremity of the four posterior tibiz; the inferior ex- 
tremity of the two last tibiz dilated. These Insects inhabit Brazil *. 
Hopi, Llhgq. 
A single hook to the two posterior tarsi; the two of the others un- 
equal and bifid; extremity of the four last tibize 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 tibize long, straight, and 
without a hooked tooth at the extremity. 
H. formosa, lllig.; Melolontha farinosa, Fab.; Oliv., Col., I, 
5, ii, 14, a, c. Nine joints in the antenne; the body entirely 
covered with brilliant silvery scales, the upper ones reflecting a 
violet blue tint; the lower ones somewhat 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 antenne of some others are composed of ten joints f. 
The 
MonocuE es, Lllig. 
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 tibiz short, with a stout 
hooked tooth at the extremity tf. 
Certain Scarabzeides, 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 paraglossz, 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 ANTmostt. 
The antenne are composed of nine or ten joints, the three last of 
which alone form the club in both sexes. The lobe terminating the 
maxillz is frequently almost membranous, silky, penicilliform, cori- 
aceous, and dentated along the inner edge in others. The labrum 
* Encyc. Méthod., article Scarabéides. 
+ See Latr., Gener. Crust. et Insect., [I, p. 115, 
$ Encyc. Méthod, article Scarabéides. 
