ANISOTOMID^. — AGATHIDIUM. 181 



smooth : elytra retuse at the base, very convex, finely punctured, with a single 

 stria near the suture, abbreviated anteriorly: body piceous beneath: legs 

 pitchy, with the tibiae and tarsi pale ferruginous. 

 Differs from Anisotoma nigrinum of Sturm, hereafter described, by the bulk 

 of its scutellum, the abbreviated sutural stria, and its larger size : from all the 

 preceding by its dark thorax ; from Ag. seminulum by its piceous abdomen 

 and black elytra ; and from all the rest by its large scutellum. 



Found occasionally in the sand-pits at Hampstead, and in the 

 gravel-pits at Coombe-wood. " Norfolk." — Dr. Leach. " Captured 

 in a Boletus growing on a fir in Thorp-wood, near Norwich, in April 

 1803, by the Rev. W. Kirby. ,, ~ Marsham MSS. 



Sp. 5. seminulum. Nigro-piceum nitidissimum Iceve, subtus rufum, elytris apice 



ferrugineis, stria suturali abbreviatd. (Long. corp. 1^ lin.) 

 Silpha seminulum. Linne. — Ag. seminulum. Steph. Catal. p. 70. No. 753. 



Extremely glossy pitchy-black ; mouth pale testaceous : eyes black : thorax 

 large, above very convex and shining, the margin pale ferruginous : scutellum 

 large, triangular, smooth, piceous: elytra above convex, smooth, pitchy-black, 

 with the apex pale ferruginous ; very obsoletely punctulated ; with a single 

 anteriorly abbreviated sutural stria on each : body pale testaceous-red be- 

 neath : legs and antennae rufo-testaceous. 



Differs from the former by its smooth glossy surface and dissimilar colour, and 

 from the following by the abbreviated sutural striae. 



Found occasionally beneath putrescent bark and in fungi, near 

 London. 



Sp. 6. orbiculare. Nigrum nitidum Icevissimum, antennis pedibusque rufo-piceis, 



elytris stria suturali nulla. (Long. corp. £ — 1 lin.) 

 Tetratoma orbicularis. Herbst. — Ag. orbiculare. Steph. Catal. p. 10.No. 754. 



Smooth glossy black ; head large, smooth ; mouth ferruginous : thorax deeply 

 emarginate anteriorly, the lateral and posterior margins, which are narrowly 

 edged with ferruginous, forming a semicircle ; the disc very convex, smooth 

 glossy black : scutellum moderate, smooth ; elytra rounded at the tip, above 

 globose- convex, smooth, shining black, without a sutural stria : body beneath 

 pitchy-black, a little shining : legs piceous, with the tibiae and tarsi ferruginous : 

 antennae ferruginous; with part of the club sometimes pitchy. 



Differs from the two last in wanting the sutural stria on the elytra, in being 

 considerably smaller and of a different colour. 



Inhabits the metropolitan district. 



Sp. 7. mandibulare. Atrum, nitidum, thoracis later ibus pedibusque rufo-testaceis, 



mandibuld sinistra magnd. (Long. corp. 1 lin.) 

 Ag. mandibulare. Sturm.— Steph. Catal. p. 70. No. 755. 



