NORTH AMERICAN COLEOPTERA. 241 



Size rather small; prouotum very finely, elytra generally densely and 

 more coarsely panctate; pronotum not distinctly impressed in the 

 middle. 

 Elytra less than one-half longer than the pronotum. 



Sides of the piothorax very strongly arcuate puberulum. 



Sides of the prothorax very feebly arcuate alutaceUHl. 



Elytra more than one-half longer than the pronotum. 



Elytra coarsely and not densely punctate pilosellum. 



Elytra very finely and densaly punctate. 



Interocular strias very fine; ocelli minute and distinct, -veterator. 

 luterocular striae deep; ocelli large, not very well defined. 



crassicorne. 



Elytra dull, very finely and transversely rugulosa opaculum. 



The genus is probably a very extensive one in California, 

 wliich region also appears to be very rich in the entire group 

 Homalini. 



PELECOMALIUM n. gen. (Homalini). 



Body depressed, winged; elytra longer than the prothorax; antenna fili- 

 form, very feebly incrassate, front not produced. Maxillary palpi with the first 

 joint small; second elongate, slender; third and fourth flattened, the former 

 slightly longer than wide, obconicai; fourth about one-half longer than the 

 third, strongly securiform. Labial palpi small; first joint very small; 

 second much wider and longer, slightly longer than wide, sides parallel, tip 

 transversely truncate; third slender, oblique, truncate at tip, sides nearly 

 parallel, much narrower and slightly longer than the second; second and 

 third joints flattened. Posterior tarsi very long and slender, shorter than 

 the tibia; first and second joints elongate, the former much the longer; 

 fourth deeply bilobed. Posterior tibise slender, terminateil by two slender, 

 unequal spurs and several small spines. Tibiae rather finely and sparsoly 

 pubescent, having a very few small lateral spines. 



It will be seen from the above diagnosis that this genus 

 bears a great resemblance to Amphichroum, and in fact if 

 the palpi were removed, it would be almost impossible to 

 distinguish P. modestum from A. veterator, so great is the 

 resemblance in every feature of the body, antennae and 

 legs. 



The two species described below may be recognized by 

 the following characters: — 



Size large; elytra coarsely and rather sparsely punctate blnotatum . 



Size small; elytra finely and very densely punctate modestum. 



