The Insect Fauna of Van Dietnen's Land. 333 



k not wanting in New Holland^ tliougli Mr. Schayer's 

 collections do not contain a single species. I do not know 

 of any New Holland species of Dejean^s genus Pachybra- 

 chis, wliich is distinguislied by tlie moutli not being cov- 

 ered by tbe anterior edge of the Prosternum ; in America it 

 is particularly ricb in species^ and found occasionally in 

 the three other continents also. On the other hand. New 

 Holland possesses some peculiar forms ; one of which cor- 

 responds with the genera Cadmus and Odontoderes of De- 

 jean^s catalogue, and is distinguished by its broad feet, 

 thickly furred on the under side, with the terminal joint 

 scarcely issuing from beyond the third joint, as in Cas- 

 sida. Here belongs also the Van Diemen^s Land Cr. Aus- 

 fralis Dejean (*.) 



A second form is Ditropidus Chevr. whose deviations 

 from Cryptocephalus are as follows : — 



The neckplate is deeply hollowed behind on either side ; 

 the central segment extends in between the wing cases, and 

 is cut out at the smaller extremity for the reception of the 

 point of the little plate. The little plate is oblong, narrow, 

 pointed at each end, not prominent. The Prosternum termi- 

 nates at the mouth without forming a projection, as in the 

 typical Crijptocephali. The eyes are but slightly rimmed 

 internally. The feet short and broad ; the claw limb pro- 



(*.) CryptocepJialus Australis, Boisd. de I'Oceau, 581, 1. In this description the 

 prevailing color of the wing'-cases is said to be a pale red, whereas it Is in reality of a 

 bright golden yel'ow. On this species is founded the genus Odontoderes, Chevr, I do- 

 not know how this latter is distinguished from Cadmus, to which also Cr. rugicolliSt 

 Gray An. Kingd. XV, pi. 6", f. 5 ; rubiginosus, Boisd. a, a. o. 587, 5 ; crucicollis, Boisd. 

 a. a. o, 585, 2, belong. The toothed lateral edges of the neck-plate, to which the formet 

 name seems to allude, belong also to most of the species of Cadmus. 



