S'(^ri7lUS.] CLAYICOKKIA. 213 



almost impiinctate except for an interrupted row of punctures close to 

 base ; elytra with very strong punctured striae, strongly punctured 

 from apex to beyond middle, sides iinpunctate ; ]>ygidium moderately 

 strongly punctured ; anterior tibii\3 dilated, with three large and two 

 or three smaller teeth. L. 3|-4:| mm. 



In dung, &c. ; widely distributed on the English coast from the Xortlimubcrland 

 and Dui-ham district on the East, to Liverpool and Manchester on the West ; 

 Stockton-on-Tees; Spurn Point; Hunstanton, Norfolk; Yarmouth; Harwich; 

 Southend; Margate; Hastings; Southsea ; Hayling Island ; Weymouth; Port and ; 

 Plymouth; Penzance; Barmouth; Isle of Man; Liverpool district; it is, how- 

 ever, somewhat local, and is very rare in Scothmd, where it has occurred in the Forth 

 district only. 



In a note in the Entomologists' Monthly Magazine, vol. xxiii., p. 16, 

 there is a reference made to a specimen of S. x>i'cscox, which Avas supposed 

 to have been taken in Oxfordshire by the Rev. A. INIatthews, but 

 which requires corroboration as the species appears to inhabit Egypt ; 

 the specimen is superficially very like Gnathoncus punctulatus, the most 

 evident distinction being a generic one, viz. that in GnatJioncus 

 the prosternum in front has its marginal striae suddenly converging, 

 thus being lanceolate, while in Sapriiius the same lines gradually meet, 

 so tliat the ridge of the prosternum is pointed. 



TISRETRIUS, Erichson. 



This genus contains about twenty species, which are very widely 

 distributed, representatives occurring in Egypt, South Africa, Madagascar, 

 Peru, Guatemala, North America, &c. ; four species are found in Europe, 

 one of which occurs in Britain ; they are remarkable for their cylindri- 

 cal form, and have the elytra wholly punctured with very short oblique 

 striae at sides which are sometimes obsolete ; they are found in wood, 

 and they appear to be parasitic on certain wood-boring beetles, in the 

 same way that Colydium elongatum is parasitic on l^latypus cylindrus ; 

 our single species is very rare. 



T. picipes, F. Pitch-black, or dark pitchy-brown, cylindrical, 

 truncate, entirely covered Avith distinct, moderately close punctuation ; 

 head rather large, forehead convex, without stria or impression ; an- 

 tennae ferruginous, or reddish-testaceous, inserted on the border of the 

 forehead between the eyes ; thorax rather long, with an entire marginal 

 stria ; elytra raised at suture, truncate at apex, with a slight impression 

 on each at base, without apparent striae ; pygidium semicircular, much 

 reflexed ; prosternimi emarginate behind, receiving the mesosternum, 

 which is pointed ; anterior tibiae much dilated at apex, denticrdate. L. 

 1|-2| mm. 



Under bark ; sometimes found on the wing or on walls ; very rare ; Forest 

 Hill ; Camberwell, Peckham, Sliirley ; Stephens gives Xorwicii, Swansea, and Biistol 

 as localities ; Mr. S. Stevens took a considerable number in 1878-9 from railings at 

 Upper Norwood, in company with Tillus unifa^ciatus and Lyctus brunneus. 



