126 



THE CANADIAN ENTOMOLOGIST 



the mentum itself. Pronotum anteriorly of the same width as 

 the head, posteriorly about twice as wide, the greatest width about 

 one and one-half times the length, the lateral margins arcuate. 



Fig. 4.' — Leplinillus aplodonlix 

 n. sp. ; labium. 



Fig. 5 — Leplinillus 

 aplodonlix n. sp.; 

 genitalia of male. 



Prosternum extending over, but not separating, the anterior coxae, 

 without a brush of hairs at the tip. Elytra at the base very slightly 

 narrower than the pronotum, then widening slightly, sharply 



Fig. 6. — A: Prosternum of Leplinillus aplodonlix n. sp. 

 B: Prosternum of Leplinus leslaceus Mull, from a specimen from 

 Forrester Id., Alaska, det. Van. Dyke. 



rounded posteriorly, entirely concealing the abdomen. IVin^s 

 lacking. Legs clothed with fine pubescence. Abdomen ventrally 

 with fine, setiferous punctures. 



