680 



ENTOMOLOGY. 



with somewhat globose-conic joints. Lip slightly emar- 

 ginate. 



Sft. 1. Ulmi. Black, shining; mouth, two basal joints 

 of the antennae, nearly the whole of the last joint but 

 one of the abdomen, the elytra (the suture excepted,) 

 reddish-brownish; tiiorax very smooth, with one or two 

 impressions; elytra with four dots arranged longitudi- 

 nally in their middle. 



Jstraftsus ulmi. Gravenherst, Latreille. 



Stafthylinus ulmi. Rossi. 



Stafthylinus ulmineus. Fabricius. 



Inhabits Italy and the south of France under the bark 

 of the elm. 



Genus CII. Staphylinus. Linn. Fabr. Latr. Oliv. 

 Lam. Graven. 



Palpi filiform. Antenna towards their extremities dis- 

 tinctly thicker, moniliform, the last joint obliquely trun- 

 cate or emarginate. Lip deeply emarginate. 



Sft. I. Erythroftterus. Black; the greater part of the 

 antennae, elytra, and feet, red ; hinder margins of the 

 head and thorax, the breast and a double series of spots 

 on each side of the abdomen, golden yellow tomentose. 



Stafthylinus erythrofiterus. Linn. Latr. Fabr. Grav. 



Inhabits Europe, in dung. 



Sft. 2. Politus. Black; head and thorax brassy-black; 

 head ovate, narrower than the thorax, impressed with 

 some distant dots : thorax with six or eight impressed 

 dots, placed in a double longitudinal series ; elytra dark- 

 er, nearly smooth. 



Stafthylinus ftolitus. Gravenherst, Latreille. 



Inhabits dung. 



Genu's CIII. Lathrobium. Gravenherst, Latreille. 



Pjederus. Gravenherst, Fabricius, Olivier. 



Staphylinus. Linnaeus, Geoffroy. 



Palpi subulate, with the last joint acicular and minute. 

 Antennae nearly filiform, joints nearly conic, those to- 

 wards the extremities more rounded, and somewhat glo- 

 bose. Lip deeply notched, nearly bilobate. 



Sft. 1. Llongatum. Pubescent, minutely but widely 

 punctated, black, shining; with the mouth, antennae, and 

 apexof the elytra and feet, red-brown; head ovate; anten- 

 nae about the length of the thorax, with the outermost 

 joints nearly globose ; thorax elongate-quadrate, with ob- 

 tuse angles, the breasts equal, the middle dorsal line 

 smooth. 



Lathrobium elongatum. Gravenherst, Latreille. 



Stafthylinus elongatus. Linnaeus. 



Paderus elongatus. Fabricius. 



Inhabits putrid vegetables, and under stones. 



Sft. 2. Riificorne. Black-fuscous, pubescent, widely 

 but finely punctate; mouth, antennae and thorax, red; 

 elytra and feet yellow-red; antennae moniliform; thorax 

 quadrate; dorsal line smooth, 



Ptederus bicolor. Gravenherst, Olivier. 



Lathrobium ruficorne. Latreille. 



Inhabits France under stones. ' 



Division II. 



Anterior margin of the head circumscribed by a curved 

 line, the antennae inserted on this side of the level of the 

 line. Elytra covering half the abdomen or more. Thorax 

 generally longer than broad, or with equal diameters. 



Subdivision 1 . 



Maxillary palpi longer than the labial one, with their 

 extremities thickest ; the last joint obscure. Body linear. 

 I fead witli a distinct nek. Thorax orbicular or cylindric*. 



Genus CIV. P^derus. Fabr, Oliv. Latr. Payk. Lam. 

 Graven. 



Staphylinus. Linnaeus, Geoffroy, De Geer. 



Antennae inserted before the eyes, insensibly thicken- 

 ing towards their extremities; the third joint very long. 

 Eyes moderately large. 



5/;. 1. Riftarius. Body red, shining; head, antennae 

 (four basal joints excepted), apex of the abdomen, and 

 knees, black ; elytra blue, with wide impressed dots. 



Paderus riftarius. Fabr. Latr. Oliv. Graven. 



Stafthylinus riftarius. Linnaeus. 



Inhabits banks, and beneath stones. 



Genus CV. Stenus. Latr. Cuv. Lam. Fabr. Payk. 

 Grav. 



Staphylinus. Linn. Marsh. 



Pjederus. Olivier. 



Antennae inserted at the interior margin of the eyes, 

 abruptly thicker at their extremities, the inferior joints 

 cylindric, the outer ones conic-globose. Eyes nearly glo- 

 bose, large. 



Sft.\. Biguttatus. Black, with grey down, minutely 

 punctate, somewhat rugulose ; vertex of the head with 

 an elevated line ; thorax behind with an impressed little 

 line; each elytron with a reddish round spot. 



Stafihyiinus guttatus. Linnaeus, Marsham. 



Stenus Biguttatus. Fabr. Payk. Grav. Latr. 



Inhabits Europe in moist places near water, as on 'the 

 banks of streams or ponds. 



Subdivision 2. 



Maxillary palpi not much longer than the labial, not 

 thicker at their extremities; the last joint distinct. 



A. Mandibles strong, with their internal edge with 

 one or more teeth. Head free. 



o. The second, third, and fourth joints of the tarsi very 

 short; the last joint as long as the others united. 



Genus CVI. Oxyporus. Fabr. Oliv. Lam. Grav. 

 Latr. 



Staphylinus. Linn. Geoff. De Geer. 



Antennae scarcely longer than the head, terminated by 

 a perfoliated mass. Maxillary palpi filiform; the labial 

 ones terminated by a very large lunate joint. Thorax 

 semicircular. Head broader than the thorax. 



Sft. 1. Rufus. Red; suture and apex of the elytra, 

 anus and breast, black. 



Oxyftorus rufus. Fabr. Latr. Grav. Oliv. 



Stafthylinus rufus. Linn. 



Inhabits boleti and other fungi. 



Genus CVII. Oxytelus. Grav. Latreille. 



Antennae somewhat broken, incurved, thicker exter- 

 nally, with the last joints foliate above ; the extreme joint 

 globose ovate; the basal joint very long conic. Palpi su- 

 bulate. Anterior tibiae very spiny, with their extremities 

 notched or narrowed externally, with their tarsi capable 

 of being reflected from their sides. 



Sft. 1. Carinatus. Black, shining, distinctly and wide- 

 ly impresso-punctatc, front unequal, somewhat inclined 

 to be rugulose, the anterior space between the eyes ra- 

 ther smooth ; thorax impressed on each side ; the mid- 

 dle with three grooves and four carinae ; the two middle 

 ones joining together ; feet blackish ; tibiae with very short 

 little spines. 



Oxytelus carinatus. Gravenherst, Latreille. 



Inhabits the dung of men and other mammalia. 



Genus CVIII. Omalium. Gravenherst, Latreille. 



Staphylinus. Geoffroy, Fabricius, Olivier. 



Palpi filiform. Antennae thicker towards their extre- 



