. TRECHUS. 167 



3. T. longicornis : elongatus, rufo-brunneus ; thorace cordato, 



postice utrinque obsolete foveolato, angulis posticis rectis ; 

 elytris subparallelis, striis tribus dorsalibus distinctis, 

 externis obsoletis ; antennis pedibusque testaceis. 



Sturm, D. F. 6. 83. pi. 151. Heer, Faun. Helv. 119. 

 Blemus longicornis, Steph. Mand. 1. 172, et Manual, p. 50. 

 Trechus littoralis, Dej. Spec. 5. 7; Icon. 4. 290. pi. 103. 



Elongate, narrow, reddish brown. Head obscure black, with 

 two curved impressions approximating in front, and forming an 

 elevated ridge on each side behind the eyes, the latter rather 

 small ; palpi and antennae testaceous. Thorax separated from 

 the hinder part of the body by a short collar or neck, cordate, 

 posterior angles right angles, disk with the usual dorsal furrow 

 terminating before and behind in a transverse impression, base 

 with two fovese. Elytra somewhat parallel, disk flattish and 

 very finely striated, the three strise nearest the suture rather 

 more distinct, the sutural one disappears just before the extre- 

 mity, the second and third reach to the apex, just before which 

 they form a curve, the fourth stria disappears behind the middle, 

 and the remainder become obsolete before they reach it, on the 

 third stria there is an impression a little behind the middle and 

 another near the apex ; legs testaceous. Length 1| line. 



This rare species has hitherto occurred but in one locality in 

 Britain, having been taken from under rejectamenta at the 

 Dudden Sands near Broughton, Lancashire, in June. 



4. T. rubens : oblongus, piceus ; thorace subquadrato, postice 



utrinque foveolato, angulis posticis acutis ; elytris oblongo- 

 ovatis, violaceo-micantibus, punctato-striatis, striis externis 

 obsoletis ; antennis pedibusque testaceis. 



Carabus rubens, Fab. S. El. 1. 187. 



Bembidium paludosum, Gyll. Ins. Suec. 2. 34. 



Trechus paludosus, Sturm, D. F. 6. 89. Dej. Spec. 5. 8; Icon. 



4. 292. pi. 203. Heer, Faun. Helv. 120. 

 Blemus paludosus, Steph. Mand. 1. 171, et Manual, p. 50. 



Oblong, pitchy or pitchy red, shining. Head depressed, with 

 a deeply impressed stria on each side between the eyes, palpi 

 and antennae red. Thorax subquadrate, sides rounded in front, 

 narrowed behind, posterior angles acute and rather prominent, 

 disk rather convex, the central line terminated in front by a 

 slight impression, the base with two deep fovese. Elytra oblong- 

 ovate, sides wider and more rounded behind the middle, disk a 

 little depressed in front, having a bluish or cyaneous reflection, 



