NEW BRITISH SPECIES, ETC., IN 1866- 65 



are the chief of those by which Thomson states the true 

 P. carhonarius of Gyllenhal may be known ! 



Mr. Crotch, who has all the advantages of the best con- 

 tinental advice, in the second edition of his " Catalogue" 

 quotes the insect known to us as pimctiventris (originally 

 introduced by Mr. E. W. Janson) as the true tenuicornis ; 

 and I certainly have for some time had foreign specimens so 

 labelled, entirely agreeing wath our species of the former 

 name. 



21. Philonthus concinnus, Grav., Col. Micr. Bruns. 21, 



25 ; G. R. Crotch, Cat. Brit. Col. ed. 2. 

 Gravenhorst, whose original description is scarcely intel- 

 ligible, at p. 84 of his Mon. Col. Micr., states that this 

 species is intermediate between P. varians and P. ebeni- 

 nus. 



22. Xantholinus lentus, Grav. ; Er. ; Kraatz, Ins. 



Deutschl. ii, 644, 15; G. R. Crotch, Cat. Brit. Col. 

 ed. 2; Proc. Ent. Soc. 19th Nov. 1866. 

 '*One specimen under bark at Invercannich, Inverness- 

 shire." 



X. lentus appears to be like a bulky specimen of X. ochra- 

 ceus in size and build, but flatter, with the head and thorax- 

 broader and black, and the elytra and legs shining reddish- 

 yellow. 



23. Othius myrmecophilus, Kies., Stett. Ent. Zeit. iv, 



308; Ktz. Ins. Deutschl. ii, 658, 6; G. R. Crotch, 



Cat. Brit. Col. ed. 2. 



Seems to be usually somewhat narrower and more convex 



than 0. 7nelanocephalus, but much darker, being pitchy, 



with a black head and fuscous elytra and apex ; the thorax, 



1867. " F 



