NATURAL HISTORY SOCIETY OF GLASGOW. 15 



but to render this paper more complete, I subjoin Hartig's 

 diagnosis : — 



Black; m.outh, sides of the breast and feet, reddish-yellow. 

 Length 1 J lines ; alar exp., 4 lines (German). In gardens— rare. 



The very dubious P. nigricans is described by Stephens as an 

 Eviphytiis (111. vii., 93), but no such species exists in his collection, 

 as Mr Smith informs me. It had better be relegated to the Hst 

 of uncertain synonyms. 



With regard to Fenella, it seems to me that two different 

 species are confounded under the name of F. nigrita ; at any rate, 

 it is difficult to see how the two following descriptions can refer 

 to the same species : — 



F. nigrita. West. (Int. ii., App., F. nigrita. Thorns., Hymen, 

 p. 54). l»Jigra, femorumapiee, tibiis Scand., i. Nigra, nitida, glabricula; 

 tarsisque obscure hiteis; alls nigri- antennis moniliformibus, 12-articu- 

 cantibus. (Antennis 11 -articulatis). latis ; subtus fuscis pilosulis ; 



genubus, tibiis tarsisque albidis ; alis 



subhyalinis. 



If my views are correct, the synonymy will then stand thus : — 



Fenella nigrita, Westwood, I.e., supra (non Thomson). 



Fenella tormentillae, Healy, Ent. iv., 140, 141. Fenusa jpygmaea, 

 Healy {non King), Ent. v., 300 ; Kaltenbach, Pflanzenfeinde, 

 225 and 227. Fenella nigrita, Thomson {non West.), Opus. Ent., 

 270, 2 ; Hymen. Scand., i., 180, 1. 



P. tormentillae mines the leaves of Tormentilla reptans and 

 Agrimonia riijMtoria. I know nothing about Fenella nigrita. I 

 have a species that I got among birch at Bishopton, which agrees 

 in colour with Phaenusa melanopoda, but it is larger, and has the 

 antennae 10-jointed. It may be truly melanopoda, or it may be a 

 new species of Fenella. If I had males I should probably be 

 able to decide this. 



II. — A Monograph of the British species of Cladius, Illiger. 

 By Mr Peter Cameron. 



The genera belonging to the sub-family Nematides may be 

 separated as follows : — 



Section i. Lanceolate cellule contracted. 

 A. Anterior wing with one marginal cellule, 



a. 2d sub-marginal cellule receiving one recurrent nervure — Cladius. 



