98 CARABIDvE. PTEROSTICHUS. 



subparallelis, striato-punctatis ; antennarum articulis duo- 

 bus basi subtus rufo-piceis. 



Carabus dimidiatus, Oliv. Ent. 3. 35. Fab. S. El. 1. 194. 

 Platysma dimidiata, Sturm, D. F. 5. 90. 

 Feronia dimidiata, Dej. Spec. 3. 213 ; Icon. 3. 16. pi. 126. 

 Pcecilus dimidiatus, Steph. Mand. 1. 109, et Manual, p. 31. 

 Pterostichus dimidiatus, Erichson, Kafer, 68. Heer, Faun. 

 Helv. 69. 



Head and thorax more or less coppery, elytra rich green, 

 sometimes black. Head with two deep striae in front and other- 

 wise wrinkled, eyes large and rather prominent, palpi and antennae 

 black, two joints at the base of the latter reddish beneath with a 

 black line above. Thorax subquadrate, equally rounded at the 

 sides, so that the width at the base about equals that of the 

 anterior margin, posterior angles not quite rectangular, the disk 

 all over transversely wrinkled, the dorsal furrow in front termi- 

 nating in an elevated space, behind which there is a correspond- 

 ing depression, the base rugose, having two longitudinal striae on 

 each side, the exterior one shortest. Elytra rather broader than 

 the thorax, rounded at the shoulders but the sides very slightly 

 rounded or somewhat straight, broadly margined, strongly punc- 

 tate-striated, the third stria with three more deeply impressed 

 punctures ; beneath black, sides of the thorax and of the abdomen 

 in front punctured, legs black. Length 6J lines. 



It is a much larger insect than cupreus, and cannot be con- 

 founded with it. Like it, it is winged, but the head and eyes 

 are larger, the foveae at the base of the thorax longer, especially 

 the inner one which extends upwards considerably ; the elytra 

 are more oblong and their sides more parallel, the striae con- 

 spicuously punctate, and the two joints at the base of the antennae 

 are red beneath only. 



It is local, but may be taken abundantly on Hampstead Heath 

 and Wandsworth Common ; and at Folkstone in the spring. It 

 is also found, as recorded by Mr. Stephens, at " Coombe Wood ; 

 Southend and in Norfolk." 



3. P. lepidus : apterus, oblongus, plerumque cupreo-vel viridi- 

 aneus, nitidus ; thorace subquadrato, basi profunde bi- 

 striato ; elytris oblongis, striatis, striis obsoletissime 

 punctulatis, punctis tribus impressis ; antennis pedibusque 

 totis nigris. 



Carabus lepidus, Fab. Mant. 1. 200 (1787). Fab. S. El. 1. 189. 



Payk. Mon. 32(1790). 

 Harpalus lepidus, Gyll. Ins. Suec. 2. 94. 



