ENTOMOLOGY. 



681 



mities, the last joints rounded, somewhat perfoliate. 

 Thorax transverse quadrate, the anterior angles round- 

 ed. 



Sfi. 1. Rivularc. Blackish, punctate; base of the an- 

 tenna; and feet pale brown; head with two impressions 

 between the eyes; thorax marginated, impressed at the 

 hinder angles, back with two grooves; elytra twice as 

 long as the thorax; obscure brown. 



Omalium rivularc. Graven. Latr. 



Sta/t/iylinus rivularis. Paykull. 



Inhabits France and England. 



b. Tarsi with elongate joints, the last joint shorter 

 than the others united. 



Genus C1X. Anthophagus. Graven. 



Stai-hyunus. Fabr. Paykull, Olivier. 



Cahabus. Panzer, Marsham. 



Antennae nearly" filiform, the second and following 

 joints obconic. Palpi filiform. Thorax elongate, some- 

 what cordiform, narrow and truncate behind. 



Sfi.l. Punctulatus. Black fuscous, somewhat smooth, 

 minutely and finely punctate ; antennas and feet obscure 

 rufous. 



Carabus dimidiatus. Panzer. 



Carabus stafi/iylinoides. Marsham. 



Lestiva fiunciulata. Latreiile, Gen. Crust, et Ins. i. 

 p. 297, tab. 9. hg. 1. 



Inhabits France and England; in the last country it 

 must be considered as of very rare occurrence. 



Genus CX. Proteinus. Latreiile. 



Antennae evidently thicker towards their extremities. 

 Palpi subulate. Thorax transverse. 



Sfi. 1. Brachytiterus. Depressed, flat, black, shining, 

 smooth, silky above; mandibles, basal joint of the an- 

 tennae, and feet, brown red ; head a little narrower than 

 the thorax, triangular; thorax short, smooth, anteriorly 

 a little narrower, the sides somewhat rounded, very 

 slightly margined, the hinder margin twice as broad as 

 long, the angles slightly prominent and somewhat red- 

 dish; scutellum very small; elytra elongate quadrate, 

 externally marginate ; the hinder and external maigins 

 rounded; abdomen with the four last joints naked. 



Proteinus brachyterus. Latr. 



Inhabits France and England. 



B. Mandibles without denticulations on their internal 

 edge. Head inserted into the thorax more or less. 



a. Antennx wide apart, inserted before the eyes ; the 

 fifth and following joints, longer than broad. Tibiae 

 spinose. 



Genus CXI. Taciiinus. Graven. Latr. 



OxYPORUS. Fabricius. 



Staphvlinus. Linue, Geoffroy, Olivier, Paykull. 



Palpi filiform. 



Sfi. 1 Ruffies. Black, shining, smooth; antennae fus- 

 cous, elytra and feet generally brown; external apex of 

 the elytra paler. 



Stafihylinus ruji/ics. Paykull. 



Tachinus ruji/irs. Grav. Latr. 



Oxyfiorus rufifies Fabricius ? 



Inhabits the dung of oxen and horses. 



Genus CXII. Tachypoiius. Grav. Latr. 



Staphvlinus. Linn. Oliv. Geoff. Marsh. 



Oxyporus. Fabricius. 



Palpi subulate. 



Sfi. 1 Clirysomelinus. Black, shining, smooth ; thorax, 

 elytra (base excepted), and feet, red yellow; thorax 

 somewhat transverse ; abdomen with the extremity trun- 

 cate. 



Vol. VIII. Part II. 



Tachyfiorus clirysomelinus. Grav. Latr. 



Oxy/iorus clirysomelinus. Fabr. 



Stafi/iylinus clirysomelinus. Linn. Marsh. 



Inliabits flowers, the roots of grass, and moss. 



b. Antennae more or less approximate, inserted at the 

 anterior internal margin of the eye, fifth and following 

 joints broader than long. Tibiae not spiny. 



Genus CXI1I. Aleochara. Knoch, Gravenhcrst, 

 Latreiile. 



SiAPHYi.txus. Linn. Fabr. Geoff. De Geer, Oliv. 

 Marsh. 



Head with the hinder part received into the thorax. 



Obs. This genus certainly should be divided into three 

 or more genera. 



* Head about as broad as the thorax, somewhat tri- 



angular; neck distinct, but not very slender; tho- 

 rax quadrate, with rounded angles in some; some- 

 what orbiculate, as broad as the elytra behind in 

 others. 

 S/i. 1. Canaticulata. Red fuscous, feet paler; head 

 and the two last joints, save one of the abdomen, black ; 

 elytra together transverse quadrate ; back of the tho- 

 rax i xcavated with an impressed longitudinal line in the 

 middle. 



Aleochara canaticulata. Grav. Latr. 

 Stafihylinus canaliculatus. Fabr. 

 Inhabits sandy banks and under stones. 



* * Head globose, behind removed from the thorax 



with a very distinct slender neck; thorax some- 

 what globose, or somewhat cordate, rounded be 

 fore, narrow, truncated behind, and narrower than 

 the elytra. 



S/i. 2. Imfircssa. Reddish, head black, thorax with 

 three lines, and with two impressions behind; base of the 

 elytra with two little impressed lines. 



Meochara im/ircssa. Grav. Latr. 



Inhabits Agarics and Boleti. 



Genus CXIV. Lomechusa. Grav. Latr. 



Head disengaged from the thorax behind, with an in- 

 conspicuous neck or none. Thorax transverse, the sides 

 rounded. Antennae distinctly pcrfoliated. 



Sfi. 1. Bifiunctata. Black, somewhat silky, thorax con- 

 vex ; elytra conjoined transverse quadrate, with a blood 

 red spot in each ; feet, hinder margin of the posterior 

 segments of the abdomen, and anus, red brown. 



Aleochara bifiunctata. Latreiile. 



Inhabits horse dung. 



Obs. In a natural arrangement of the genera, Psela- 

 phus should probably be placed after Lomechusa, but in 

 the present infant state of our knowledge, we must keep 

 that genus in the section Dimera. 



TrIIIE XII. ScYDM^NIDES. 



Body ovoid, rounded at each extremity. Palpi vcry 

 long. Tarsi short. Elytra hard, covering the abdomen". 

 Antennae gradually thicker towards their extremities. 



Genus CXV. Mastaous. Hoffniansegg, Latreiile, 

 Hellwigg. 



Ptinus. Fabricius, Olivier. 



Antennae filiform, (or nearly so), composed of long 

 joints, gcniculated. Maxillary palpi with the two last 

 joints forming an oval mass. 



S/i. 1. Pal/iatis. Black. 



Inhabits Portugal; was discovered by Count HofF- 

 mansegg. In Dr Leach's possession there are two spr 

 citnens which were said to have been taken in Britain. 



Genus CXVI. Scydm^enus. Latreiile. 

 4 It 



