IIARPALIDii;. PATllOBUS. 119 



Deep pitchy-black: head smooth, impunctate: thorax obovate, a little depressed 

 behind, with a slight dorsal Une, and an oblong impressed smooth fovea on 

 each side near the hinder angle: elytra striated, the striae punctate; the 

 margin with a series of impressions at the base, and another closely approxi- 

 mating towards the tip: body beneath pitchy: legs, antennae, and palpi 

 rufous : mandibles ferruginous. 



Near London, Southend, &e. : in the spring tolerably frequent. 

 — " Occasionally near Bottisham, under felled timber." — Rev. L. 

 Jenyns. 



Genus XLVIII. — Patrobus, Megerle. 



Pa/jji rather slender; external maxillary with the basal joint small, second 

 longest, third and fourth of equal length, the latter fusiform, the two pre- 

 ceding clavate : labial rather more slender, the basal joint, or scape, very long, 

 second minute, the following about half the length of the terminal, which is 

 fusiform : labrum transverse, straight anteriorly : mandibles denticulated at 

 the base only: mentum slightly emarginate, with a notched central lobe. 

 Antenna; with the two basal joints only naked, the third joint very long ; head 

 subtrigonate, attenuated posteriorly : thorax subquadrate, narrowed behind, 

 the posterior angles acute, with an elevated carina : elytra oblong, obsoletely 

 emarginate at the tip : wings two or rudimentary : anterior tarsi of males 

 with two dilated joints. 



Patrobus diiFers from the two preceding genera by having the 

 mentum slightly emarginated, with its notch furnished with a bifid 

 lobe ; and from the following by the straight anterior edge of the 

 labrum: the males are farther distinguished from those of the 

 above genera by having the two anterior joints of the tarsus alone 

 dilated. 



Sp. 1. rufipes. Apterus, nigro-piceus, subtiis dilutior, pedibus rvfis, thorace 



postie'' foveolato, elytris punctato-striatis. (Long. corp. 31 — 4g lin.) 

 Ca. rufipes. Fabricius. — Pa. rufipes. Steph. Catal. p. 25. No. 200. 



Deep pitchy-black : head obsoletely wrinkled, with a deep impression between 

 the eyes on each side, and a transverse punctate one behind tlie eye : thorax 

 longer than broad, anteriorly punctured, the hinder angles elevated, acute ; 

 rather convex, shining, obsoletely wrinkled, with a deep dorsal line, and 

 at the base, a large round deep punctate fovea near each angle : elytra 

 striated, the stria? punctate and rather obsolete at the tip and on the sides ; 

 the second from the margin deep, and bearing a series of remote impressions; 

 and the disc with several impressed dots on the second interstice from the 

 suture : thorax beneath thickly punctate : legs rufous. 



Var. /3. "With the body entirely of a rusty-red, the head and thorax darker : 

 sometimes pale ochraceous, both probably immature. 



Apparently a littoral insect, chiefly occurring on the coasts uf 



