TACHYPORID.E. TACHYPORUS. 177 



.known by the dissimilarity in the structure of the palpi, as well as 

 by the diversity of their general form, and their colouring ; exclu- 

 sively of the proportions of the joints of the antennae, their almost 

 universally impunctate elytra, and other less evident characters. 

 Then- manners are also shghtly different, inasmuch as they are found 

 less exclusively in fungi, &c. 



A. With the body generally elongated, and slender. 



Sp. 1. diffinis. Testaceus, brevis abdomine fuscescente, elytris planiuscuUs. 

 (Long. corp. ^ lin.) 



Ta. diffinis. Kirby MSS.—Sieph. Catal. 270. No. 2806. 



Testaceous, smooth, rather obscure: head rufo-testaceous, inflexed : thorax 

 truncate in front and behind, scarcely widened posteriorly: elytra flat, 

 scarcely as long as the thorax : abdomen barely twice the length of the 

 elytra, fuscescent, the apex scarcely pilose : legs pale : antennse not longer 

 than the thorax, thickened exteriorly, with the terminal joint ovate-acute. 



Not common : found occasionally within the metropolitan district, 

 and in Suffolk and Devonshire. 



Sp. 2. testaceus. Linearis, testaceus, abdomine obscuriori. (Long. corp. 



l^lin.) 

 Oxy. testaceus. jPaZ>W«w*.—Te. testaceus. Steph. Catal. 270. No. 2807. 



Slender, nearly linear, testaceous, very glossy and smooth, glabrous: head 

 rather broad, subtriangular : thorax somewhat narrowed : elytra entirely 

 pale testaceous, rather wider and longer than the thorax : abdomen twice 

 as long as the elytra, dusky testaceous, or dull rufo-testaceous : legs pale : 

 antennse flavescent, longer than the thorax, slightly incrassated exteriorly. 



More abundant than the last : found near London, and in Norfolk 

 and Suffolk. 



Sp. 3. flavicornis. Testaceus, nitidissimus, abdomine fuscescente. (Long. 



corp. If lin.) 

 Ta. flavicornis. Kirby MSS.— Steph. Catal. 2T0. No. 2808. 



liuio-testaceous, very shining and smooth, glabrous, somewhat depressed, 

 sublinear : head small, subtriangular ; eyes black : thorax rather narrow, 

 immaculate : elytra also immaculate : abdomen rufo-fuscous, pilose : legs 

 pale : aniennce fulvous : longer than the thorax, slightly thickened exteriorly. 



Taken in Suffolk. 



Sp. 4. nitidus. Rufo-testaceus, oculis nigris, capite abdomineque fusco-piceis^ 



(Long. corp. 1^ lin.) 

 St. nitidulus. Olivier ?— Ta. nitidus. Steph. Catal. 270. No. 2809. 



Mandibulata. Vol. V. 31st May, 1832. n 



