166 MANDIBULATA. — COLEOPTERA, 



Sp. 2. Skrimshiranus. Fusco-testaceus, .mbopacus, capite nigro, antennarum 

 articuUs trihus basalibus, palpis pedibusque pallide testaceis. ( Long. corp. 3 lin.) 

 St. Skrimshiranus viihi. — Step/i. Catal. p. 33. JVo. 315. 



Allied to the foregoing, but more oblong: above dull brown-testaceous: head 

 black : thorax with an obsolete dorsal channel;, and a single subpunctate fovea 

 on each side at the base : elytra entirely testaceous-brown, with an obsolete 

 darker tinge towards the apex, simply and regularly striated, the abbreviated 

 and sutural striae united ; the marginal stria with a few obhque serratures to- 

 wards the apex, and two at the base : the abdomen, breast, and head pitchy- 

 black, the thorax, legs, palpi, and three basal joints of the antennse pale tes- 

 taceous. 



"Near Fakenham, in Norfolk." — Rev. T. Skrimshire; to whom 

 I am indebted for my specimen. There are also two specimens in 

 the British Museum from the above county. 



Sp. 3. vespertinus. Plate IX. f. 3. — Nigro-piceus, pedibus pallidis, thoracis 

 margine laterali testaceo,foved magnd punctata postice utrinque, elytris brunneis 

 interne nigris. (Long. corp. 2f — 3 lin.) 



Ca. vespertinus. Illiger? — St. vespertinus. Steph. Catal. p. S4i. JVo. 316. 



Pitchy-black : head and thorax glossy black, the latter with a slight dorsal line, 

 the lateral margin pale testaceous, a broad, shallow, tliickly punctate fovea on 

 each side at the base : elytra slightly convex, rather glossy testaceous or pitchy- 

 brown, with the margin and suture palest, and an indistinct longitudinal dash 

 of bluish-black towards the suture : legs, basal joint of the antennae, and tip 

 of the palpi pale testaceous, the rest of the antennae fuscous. 



Var. )S? St. Zeigleri. Stepk. Catal. p. Si. JVo. 317. Rather more elongate, with 

 the elytra darker than usual, and the thorax less margined than ordinary. 

 This insect, which I have lately re-examined, is in the British Museum, and 

 is evidently a mere variety of the above. 



Usually taken in marshy and damp situations, or gravelly banks 

 by the sides of ponds. " Wandsworth-common and Copenhagen- 

 fields, in the spring." — Mi\ Ingpen. " Battersea-fields, and near 

 the canal, Earl's-court." — Mr. Waterliouse. " Borders of Whit- 

 tlesea Mere.""— J/r. Weaver. " Marshes near Norwich." — Late 

 Mr. Griffin. " Hackney-marshes." — Mr. Bentley. 



Genus LX. — Trechus, Clairville. 



Palpi, external maxillarij and labial with the last joint conic acute, the penij- 

 timate joint of the former obconic, shorter than the last, the two forming a 

 fusiform club ; internal maxillary composed of two nearly equal joints, the 

 terminal very slender: labrum rounded, entire: 7nandiblcs acute: mentum 

 transverse, tridentate anteriorly, the central tooth shortest. Antennes with the 



