112 CLAVICOUXIA. [rtindla.. 



at middle, with sides strongly margined, slightly rounded in front and 

 contracted behind, posterior angles nearly right angles, closely and 

 rather deeply tuberculate ; scutellum short ; elytra rather long, con- 

 tracted at apex, with sides rounded and margined, very closely and some- 

 what deeply asperate in transverse rows, apices scarcely rounded ; abdomen 

 rufo-testaceous, with five segments uncovered, very obtuse ; legs long 

 and stout, yellow ; under-side rufo-testaceous. L. -| mm. 



Very rare; one specimen taken by Mr. Matthews running on the back of a slug, 

 Limax maximu*, near Weston, Oxfordshire, the probable habitat of which was 

 under apple bark; a second has occurred near Vinceunes, Prance. 



The specimens that have been taken have a transverse impression at 

 base and a smaller oval one on disc at each side : these impressions are, 

 however, variable in the Trichopterygidse. The species may be 

 distinguished by the shape of the head and thorax, the long elytra, and 

 also by the sculpture and colour. 



P, aptera, Guer. (? Ratisbonensis, Gyll. ; v. ? pallida, Er.). 

 Smaller than any of the preceding, elongate, oval, rather depressed, 

 clear yellow, clothed somewhat thickly with rather long pale hairs ; 

 head rather large, strongly rounded in front, eyes rather large and 

 prominent, or altogether absent ; thorax a little longer and broader than 

 head, broadest at middle, with sides slightly margined, moderately rounded 

 in front, and feebly constricted behind, with posterior angles almost 

 right angles, not prominent, thickly and finely tuberculate ; scutellum 

 rather small; elytra oval, longer and broader than head and thorax, 

 deeply and closely asperate in transverse rows, apices strongly rounded ; 

 abdomen elongate, with five segments uncovered, acuminate at apex ; 

 legs pale yellow. L. f-f mm. 



Under bark of dead trees and in decaying wood ; Chatham ; Mioklebam ; Sevenosks ; 

 Cobhain ; Bearsted; New Forest ; Salford Priors ; Cannock Chase ; Sherwood Forest. 



In the females the elytra have two darker bands which meet behind ; 

 these, however, are variable and sometimes absent ; occasionally the 

 dark colour is spread over the whole elytra. 



P.pallidum is distinguished from this species by Erichson by its 

 narrower form, thicker pubescence, less strongly rounded sides of 

 thorax, and less obtuse posterior angles of the same. 



P. ang-ustula ( ? gmcilis, Gyll.). This species somewhat resembles 

 the preceding, but may be easily distinguished by its shorter head and 

 longer thorax, which is strongly constricted behind, and especially by 

 its very short elytra, which leave six segments of the abdomen uncovered ; 

 the abdomen is acuminate at apex, and is furnished at the sides with 

 long setae ; the sculpture of the thorax is rather deeper, and of the elytra 

 more remote ; in the female there is a single dark baud of a darker 

 colour on each elytron. L. f-f mm. 



