176 ACADEMY OP NATURAL SCIENCES 



4. R. CONSTRiCTUS. — Blackish, with cinereous scales ; an im- 

 pressed, transverse line between the eyes ; elytra reddish-brown ; 

 thighs mutic : rostrum long. 



Inhabits Missouri. 



Body blackish, punctured, covered with oblong scales, not im- 

 bricate ; vertex, punctures minute: [314] front, a profoundly 

 impressed, transverse line between the eyes : eyes black, distant 

 above, approximate beneath : rostrum cylindric, more than half 

 as long as the body, regularly but slightly arquated from the 

 base, impunctured; base above with depressed granules j tip pi- 

 ceous : antennae placed rather behind the middle, piceous, darker 

 in the middle : thorax densely punctured, punctures large, ap- 

 proximate ; anterior margin obsoletely piceous : elytra, striae pro- 

 foundly indented, straight, punctures obsolete ; interstitial lines 

 dilated, depressed : feet obscure rufous ; thighs mutic ; tarsi 

 blackish. 



Length, from base of rostrum to tip of elytra, three-twentieths 

 of an inch. 



The impressed frontal line connects the eyes, and is very pro- 

 found. 



[A species of Errldnus. — Lec] 



5. R. INTERSTITIALIS. — Black, punctured ; elytra striated, in- 

 terstitial lines with punctured series. 



Inhabits Missouri. 



Curcidio stri'atus Melsh. Catal. 



Body deep black, immaculate, nearly naked, punctured; punc- 

 tures orbicular, concave, polished within, distinct : vertex with 

 small, distant punctures : eyes remote above : front obtusely in- 

 dented between the eyes : rostrum punctured, arquated : thorax, 

 excepting at the anterior margin, as broad as the elytra ; a dorsal, 

 obsolete line destitute of punctures : scutel transverse, inequal : 

 elytra deep brownish-black ; striae profoundly impressed, trans- 

 versely [315] punctured; interstitial lines superficially de- 

 pressed, each with one or two series of orbicular punctures, fur- 

 nishing short white hairs : tibiae and tarsi piceous j terminal ar- 

 ticulation black : anus naked. 



Length, base of rostrum to tip of elytra, from more than 

 three-twentieths to less than one-fourth of an inch. 



[Vol. III. 



