harpalid.t:. — platynus. 83 



head, rather convex, shining, with a slight central line, and a deep arcuate, 

 elongate, punctated fovea at the base, near the hinder angle : elytra broad, 

 fusco-testaceous, or brown, shining, deeply punctate-striate, the stria some- 

 what crenate ; at the margin a series of larger foveae : body beneath smooth, 

 glossy, piceous, the apex rather pale : legs elongate, pale-testaceous : antennas 

 pale-ferruginous : palpi piceous. 

 Var. /S. "With the elytra pale testaceous. 



Rather a scarce species, occurring in marshy situations. It has 

 been taken in Bottisham-fen, under the bark of a tree, by the Rev. 

 L. Jenyns ; at Waltham-marsh, by Mr. Hanson ; in the marshes 

 near Norwich, by the late Mr. GrifEn; and once by myself in 

 Battersea-fields. 



Genus XXXIII. — Platynus, BoneUi. 



Palpi with the terminal joint ovate, subtruncate : lahrum quadrate, transverse, 

 entire : mandibles denticulated at the base, acute, rather suddenly bent in- 

 ternally at the tip : mentum anteriorly emarginate, with a bifid tooth in the 

 centre. Antennas linear, the third joint about twice as long as the second : 

 head subovate : thorax strongly margined, truncate-cordate, depressed : elytra 

 sinuated at the tip : hody depressed : wings two, or none : anterior tarsi of 

 males with three dilated joints. 



Distinguished from Anchomenus and Callistus by having a bifid 

 central lobe in the notch of the mentum ; from Sphodrus by the 

 comparative brevity of the third joint of the antennae; and from 

 Agonum, by the form of the thorax, the hinder angles being acute, 

 and not rounded, as in that germs. 



Sp. 1. angusticoUis. Niger nitidus, thorace glaberrimo, elytris striatis, apice 



sinuato-ejnarginatis. (Long. corp. 5 — 6 Hn.) 

 Ca. angusticoUis. Fabricius.—Vl. angusticolUs. Steph. Catal. JVo. 118. 



Shining black : head smooth : thorax very glossy, rather convex, transversely 

 but obsoletely strigose, with a deep transverse abbreviated line on the anterior 

 part, a strong longitudinal im.pression, and a fovea on each side near the 

 hinder angle : elytra broad, depressed, shining black, striated, the striae, under 

 a powerful lens, very obsoletely punctulate, a marginal series of remote im- 

 pressions, and three larger impressed dots on the disc ; the interstices convex : 

 body beneath smooth, glossy black : legs, mouth, and palpi piceous : antennae 

 nifo-piceous at the base, brown at the tip. 



Frequently taken at the roots of trees in the spring, especially 

 on Epping-forest : it likewise occurs at Coombe-wood, in Ken- 

 sington-gardens, and in Devonshire. 



t Sp. 2. scrobiculatus. Apterus, afer, antennis pedibusque rufis ; capite punctis 

 diiohus sangnineis. (Long. corp. 6 lin.) 



