OP NATURAL HISTORY. 631 



2. S.? BRUNNEUS. — Blackisli-brown ; anteanae sericeous-brown ; 

 thorax with two indentations on the disk. 



Inhabits Indiana. 



Body blackish -brown, punctured, oblong; head with small 

 punctures, rather prominent between the antennae, above which 

 it is somewhat indented ; antennae as long as the thorax or rather 

 longer, brown sericeous; thorax with small punctures, anterior 

 and posterior angles dentiform ; disk with a small orbicular in- 

 dentation each side behind the middle, and an irregular one on 

 the basal middle ; posterior margin each side of the middle a lit- 

 tle concave ; scutel orbicular ; elytra with numerous somewhat 

 large punctures ; not in strias, with four slightly elevated lines or 

 nervures, the inner one abbreviated before the tip, the others 

 confluent near the tips. 



Length from two-fifths to three-fifths of an inch. 



This insect approaches, in character, nearer to Sandalus than 

 to any other genus. In that genus the mandibles are remarka- 

 bly falcate, and the tooth is on the inner side, towards the base ; 

 they are also covered to the middle by a membrane or coriaceous 

 process ; the tibiae are quadrilateral and denticulate, and the 

 tarsi beneath are clothed with very dense hairs. In our insect 

 the conformation of the antennae is the same as in the female of 

 Sandalus, excepting that they are much more elongated ; the 

 mandibles are less prominent, and have the tooth on the superior 

 side near the tip, which is therefore emarginate, or rather bifid, 

 and are destitute of any membranous covering at base ; the tibiae 

 are not quadrangular, the tarsi are simple beneath, and the men- 

 turn is somewhat transversely oval, with a robust dentiform pro- 

 cess before. It can be separated under the name of Zcnoa. 



I have found it under the bark of decaying trees. 



Vid. G-en. Anahdes Leach, or Cehrio. Probably C. hicolor, 

 but it does not appear to agree with Fabrieius's description. 



[Previously described as Melasis piceus Beauv.; a variety was 

 subsequently described by me as Zenoa vulnrrata.—hY.c.'] 



LYCUS Fabr. 

 1. L. MODESTUS.— Black; thorax fulvous, with a black disk. 

 Inhabits Ohio. 

 Body black, opake; antennae, second joint minute, nearly half 



1835.] 



