CUECUL10NIUE8. 267 



Genus THECESTERNUS nob. 



Anterior part of the pectus excavated for the reception of the 

 rohtrunj. 



yaliiral character. — Body convex, firm, unequal : rostrum 

 very sliort, thick, entire : antenna rather slender, inserted near 

 the middle of the rostrum, in a deep, somewhat angulated groove ; 

 first joint oblong turbinate, a little anjuated ; second and third 

 short, subturbinate, the latter shorter ; fourth and eighth very 

 short, (juadrate or transverse ; club rather large, of which the 

 basal joint (or two joints ?) is as long again as the ultiujate one, 

 which is subacute : eyes a little oblique, somewhat acute before, 

 oblong subovate : thorax longitudinally somewhat quadrate : scu- 

 tel none : elytra connate, rigid, hardly broader at base than the 

 thorax, narrowed at tip and concealing the podex : pectus ante- 

 riorly deeply excavated to receive the rostrum : feet, anterior pairs 

 approximate : posterior pair distant : thighs not dilated : tibia) 

 with a short, thick, or double spine at tip : tarsi simple. 



Oba. — I proposed this genus when describing the species, but 

 •mittod the name. It differs from Brachi/ccriis F., and Episiis 

 Billb. by the pectoral excavation, general form of the body, less 

 robust anteuns, and larger club. 



T. IIUMERALIS nob. {Brachi/cents,') Journ. Acad. Nat. Sci. 

 Vol. o, p. 254. 



[This is] the type of Lithodus Germ. Sch. Cure. 2, 420.— 

 Lec. 



GRAPHORHIXUS Sch. 



1. G. VADOSUS. — Body dark cinereous : rostrum with a deep- 

 ly impressed line, on each side of the middle of which is a short 

 impressed line, and between the eyes is a dilated, suborbicular 

 indentation : thorax with large, somewhat irregular, approximate 

 punctures : elytra with the alternate lines more elevated, partic- 

 ularly towards the base ; punctures transverse. [9] 



Length less than two-fifths of an inch. 



Inhabits Missouri. 



This insect was presented to me by Nuttall. 



[Belongs to Ejyicacrus. — Lec] 



