Ptilium.'] CLAVICORNIA. 133 



Allied to the preceding, but easily distinguished by its smaller size, 

 broader form, shorter elytra, and reddish or castaneous colour; the 

 sculpture is exceedingly fine, and the thorax is narrower in proportion to 

 the elytra ; the antennae, also, are rather shorter, and have the last joints 

 more thickened. L. f mm. 



In nests of Formica rufa ; locally abundant; Chislehurst, Kent; Scarborough ; 

 Scotland, very local, Dee and Moray districts. 



P. insigne, Matth. Elongate, rufo-castaneous, clothed with short 

 pale pubescence, rather finely and closely tuberculate ; head large, 

 elongate in front, antennas pale yellow, short and stout, with the two 

 last joints much thickened ; thorax short, with sides strongly rounded, 

 and much constricted at base, with a deep central channel and a shallow 

 impressed line on each side, the channel and lines being parallel ; elytra 

 rather long, not dilated behind ; abdomen plainly exsevted, testaceous ; 

 legs rather long, slender, pale yellow, tibiae dilated at apex ; under- side 

 entirely testaceous. L. f mm. 



Very rare ; one example has been taken by Mr. Watorhouse in the London district, 

 and Mr. Blateh records it as from " Kuowle ( ?) " in lawn clippings. 



This species, like P. ciffine, has the lateral lines on thorax parallel to 

 the central channel, but they are much shallower, and the insect is 

 altogether smaller and narrower, and more finely sculptured, and the 

 thorax is broadest about middle. 



P. foveolatum-, All. (excavatum, Er. ; dandestinum, Hal. ; mini- 

 mum ? Herbst.). Elongate, very small, narrow, and slender, rather 

 convex, rufo-castaneous or rufo-testaceous, clothed with short yellow 

 hairs, strongly and closely tuberculate ; head large, almost triangular, 

 very much elongate, eyes large, prominent, antenna? rather long, pale 

 yellow ; thorax not broader and scarcely longer than head, slightly rounded 

 in front, and constricted behind, with a short central channel and an 

 indistinct impressed line or fovea on each side diverging in front ; these 

 impressed lines are sometimes very indistinct j elytra long and linear, 

 parallel-sided until near apex ; legs pale yellow, tibiae slightly dilated at 

 apex ; under-side rufo-testaceous. L. |-| mm. 



In dung-heaps, hot-beds, &c.; probably generally distributed; Kingsgate ; Mid- 

 land districts ; Northumberland district, rare ; I have taken it in the greatest pro- 

 fusion in a hot- bed at Barnwood near Gloucester; when a hot- bed is freshly watered 

 and closed the evaporated steam condenses in large drops on the under-surf ice of the 

 glass; various species of small beetles, especially Trichopterygidae, are perpetually 

 flying upwards from the centre of the bed, and these are caught in the drops and may 

 be sometimes taken by the hundred; I obtained all my specimens of P. foveolatum 

 in this manner. 



P. Kalidaii, Matth. Elongate-oval, slender, very convex, shining, 

 bright castaneous, sparingly clothed with very short pale pubescence ; 

 head moderate, rather elongate, deeply impressed with foveolate punc- 

 tures, antenna) rather long, clear yellow ; thorax small and short, scarcely 



