NATURAL HISTORY SOCIETY OF GLASGOW. / 



projecting; blotch broad. Wings blackish, with deep black costa, 

 stigma, and nervures; costa dilated towards the stigma; 1st 

 marginal cellule much broader and longer than the 2nd ; 1st sub- 

 marginal longer than the second, which is twice wider at the apex 

 than at the base, and angled where it receives the 2nd recurrent 

 nervure. Marginal nervure curved, received a good piece past the 

 2d sub-maruinal ; 1st recurrent received in the middle of the 1st 

 sub-marginal cellule ; the 2d about a fourth of the length of the 

 cellule from the 1st sub marginal nervure. Length If lines. 



The male I have not been able to distinguish. 



The distinct frontal sutures, deep smoky black wings, pilose 

 antennae with the 3d joint more than double the length of the 

 4th, will serve to distinguish this species. 



Apparently not common. Taken near Glasgow, and in the 

 London district (J. G. Marsh). June. 



The larva is not known with certainty. Zaddach (Besch. neuer 

 oder wenig bekant. Blattw., f. 12, p. 29) states that the larva of 

 P. immila mines the leaves of the alder; but as immila in this 

 country is a birch miner, it seems probable that Zaddach's 

 observations refer to melanopoda rather than to jj'w^m'/rt. The alder 

 miner, as figured by Zaddach, does not differ apparently from that 

 of the true pumila. 



The P. nigricans of Klug and Hartig seems to be a different 

 species from the above, as will be seen from King's description 

 (Blattw., No. 188), which is as follows: — "Brownish-black: antennae 

 as long as the abdomen; labrum and tips of the mandibles 

 testaceous ; legs pale testaceous, with dusky trochanters ; wing 

 scales yellowish; wings hyaline, with the nervures and stigma 

 brownish." Length 2 lines (Hab., Sweden). 



No one has yet re-discovered it, and Thomson thinks that the 

 original type may have been a Blennocampa, with 3 sub marginal 

 cellules, and he adopts King's name for melanopoda; but we have 

 no evidence that the original nigricans was not a true Phaemisa, 

 and in default of this information, it seems to me better to regard 

 it as belonging to that genus, and to rename the species first 

 described by Thomson, which I have accordingly done. 



2. Phaenusa pumila. 



Tenthredo pumila, Klug, Blattw., 120, 190. Tenthredo pygmaea, 

 Zetterstedt, Ins. Lapp., 340, 11. Fenusa pv.mila, Stephens, 111., 



