PAUSSTJS. 



471 



Key to the Species. 



Club of antennae not excavate. (Paussus, 

 i. sp.) 



i. Club of antennas not cylindrical, with 

 or without transverse impressions or 

 furrows on its exterior disc. 

 1. Pronotum Avith a central transverse 

 furrow, but not distinctly divided 

 into an anterior and posterior portion. 



A. Head very large, much produced 



and rounded before the eyes ; club 

 of antennas broad and flat, bean- 

 shaped desneuxi, sp. n., p. 475. 



B. Head not strongly produced before 



the eyes, transverse or subtri- 

 angular; club of antennas a little 

 longer than broad. 



a. Club of antennas more or less round, 



lenticular. 

 «*. Club of antennas without, or 

 only with traces of transverse 

 impressions. 

 a\. Posterior margin of club 

 with a long ovate impression 



in the middle spencei, Westw., p. 476. 



&t. Posterior margin of club 

 without an elongate im- 

 pression. 

 a %. Anterior portion of pro- 

 notum not impressed on 

 each side, smooth and 



shining affinis, Westw., p. 476. 



b\. Anterior portion of pro- 

 notum impressed on each [p. 477. 



side, rather dull cognatus, Westw., 



b*. Club of antennas with three 



strong entire transverse im- [p. 478. 



pressions hearseyanus, Westw , 



c*. Club of antennas with two 

 strong transverse impressions, 



and a third abbreviated horni, Wasm., p. 479. 



d*. Club of antennas with one 

 strong transverse impression, 



and a second more or less [p. 480. 



abbreviated sesquisidcatus, Wasm., 



b. Club of antennas distinctly oblong, 



longer than broad. 

 a*. Club of antennas with four 



strong distinct transverse im- [p. 478. 



pressions schiodtei, Westw., 



6*. Club of antennas without 



transverse impressions adamsoni, sp. n., p. 481. 



