CLASS V. INSECTA. 173 



Division II. — Anterior margin of the head circumscribed hi/ a curved line 

 the antenna inserted on this side of the level of the line. Eli/tra covering 

 half the abJomen or more. Thoru.r generallt/ longer than broad, or with 

 equal diajiteters. 



Subdivision l.—Maxillany palpi longer than the labial one, ziith their 

 extremities thickest ; the last Joint obscure. Body linear. Head with a 

 distinct neck. Thorax orbicular or ct/lindric. 



Genus 106. P.EDERUS. Fabr., Oliv., Latr., Payk., Lam., Grarcnh., 

 Leach. Staphylixls. Linn., Geojf., Be Gcer. 

 Antenna inserted before the eyes, insensibly thickening towards their 



extremities; the third joint very long : eyes moderately large. 

 Sp. ]. r^d. riparius. Body red, shining: head, antennje (four basal 



joints excepted), apex of the abdomen, and knees, black: elytra 



blue, with white impressed dots. {PI. 4.fg. lo.) 

 Paderus rijjarius. Fabr., Latr., Oliv., Gravenh. Staphylinus riparius. 



Linn. 

 Inhabits banks and under stones. 



On^.—Paderus orbiculatus is tiie type of the Genus RuciLrs of 

 Leach. 



Genus 107. STENUS. Latr., Car., Lam., Fabr., Payk., Grarcnh., 

 Leach. 

 ^n^f/?7?^ inserted at the exterior margin of the eyes, abruptlv thicker 

 at their extremities, the inferior joints cylindric, the outer'ones co- 

 nic globose : eyes nearly globose, large. 



*" Tongue long, anus without seta. 



Sp. 1. Stenus higuffatus. Black, with gray down, minutely punctate, 

 somewhat rugulose : vertex of the head with an elevated line: tho- 

 rax behind with an impressed little line; each elytron with a reddish 

 round spot. {PL 4.f'g. 13.) 



Staphylinus guttatus. Linn., Marsh. Stenus biguttatus. Fabr., Payk , 

 Gravenh., Latr. 



** Tongue obsolete. Anus zcith two seta. 



Genus Dianous. Leach. 

 Sp. 2. Stenus carulescens. Gyllenhall. 



Subdivision Q.. -—Maxillary palpi not much longer than the labial, not 

 thicker at their extremities; the last joint distinct. 



A. Mandibles strong, with their external edge with one or more teeth. 

 Head free. 



a. The second, third, and fourth joints of the tarsi very short: 

 tlie last joint as long as the others united. 



