176 



deep black colour, ovate shape, much shorter antennae, and in the pe- 

 culiar sculpture of the thorax, which is covered with small distinct 

 tubercles disposed in wavy rows, with the interstices distinctly and 

 elegantly alutaceous. 



This is a eommon species, and may be found, as its name implies, 

 beneath cow-dung, but is seldom met with elsewbere. 



Trich. picicornis, Mannerheim. 



This is another species usually included under the name of T. sericans, 

 but is easily distinguished from all its congeners by its oblong parallel 

 and depressed shape, long legs and antennsB, sculpture of the thorax 

 (which is not tuberculate, but simply alutaceous), and also by the dilated 

 joints of the four anterior tarsi. 



It is by no means rare. 



Trich. brevis, Motsch., Bull. Mosc, 1845. 



This is generally confounded with T. pygmcea. It does not, how- 

 ever, bear the slightest resemblance to that species, except in size. The 

 latter is parallel in shape throughout, very black, without tubercles on 

 the thorax, and has the basal joint of the anterior tarsi dilated ; while 

 T. brevis is clothed with a pale brownish pubescence, its thorax is di- 

 lated towards the base, with the sides somewhat rounded, and is covered 

 witli distinct tubercles prettily arranged iu wavy rows, with the inter- 

 stices deeply alutaceous ; its head is also ornamented with tubercles in 

 perfectly straight rows. It also differs from T. pygmcea in having the 

 sides of the elytra strongly margined, the apical joint of the antennae 

 obtuse, and the anterior tarsi simple. 



It is, moreover, of much rarer occurrence. 



Ftenidium turgidmn, Thomson. 



I feel much pleasure in adding this species to our list ; one speci- 

 men was taken by Mr. "Waterhouse near London, in 1862, and I 

 met with another mutilated example in the collection of the late 

 Mr. Griesbach. 



It may be known from Pt. Grcssneri by the dilated sides of the 

 thorax, and the four small eqiiidistant fovege near its basal margin, and 

 also by the very obtuse apex of the elytra ; from the rest of the genus 

 it differs in its obtuse and exceedingly convex shape, and the shining 

 red colour of the whole body ; in size it is equal to Pt. apicale. 



Trich. Kirbii, n. s. 



L. c, ii lin. Ovate, very convex, clothed with a longish yellow 

 pubescence, covered with small distinct tubercles, closely arranged with- 



