58 NEMATUS HIBERNICUS. 



Zeit. i, 27) is a line larger than a type of fulvipes 

 I received from Prof. Zaddach. The antennas are 

 apparently shorter and thicker, the legs are redder, and 

 the tarsi (especially) and apex of tibise, black. I 

 cannot, however, distinguish further differences be- 

 tween them. It is to be remarked also that neither 

 Thomson nor Hartig makes any mention of the tarsi 

 being black, nor of the apex of the tibiae, but the latter 

 point is mentioned by Eversmann. Again, Thomson 

 says of the antennas " articulo 3 4 haud breviore," 

 a statement which does not apply to any specimens I 

 have seen. 



The larva of fulvipes, according to Brischke and 

 Zaddach' s figure, is pale green, with the segmental 

 divisions darker, the head marked with fuscous black 

 on the vertex and at the sides ; there is a spot in the 

 centre of the face, and the anal segment is red. The 

 dorsal stripe is darker and is bordered by white lines. 

 It feeds on Salix aurita. Similar larvas I have often 

 seen, but never succeeded in rearing the flies. 



I have one specimen agreeing with Prof. Zaddach's 

 from near Glasgow. The larger form is tolerably 

 common ; I have it from Clydesdale, Kintail, Eannoch, 

 Braemar. Stephens' specimens were from the London 

 district. 



On the Continent it has a wide distribution, being 

 found in Lapland, Sweden, Germany, France and 

 Russia. 



5. NEMATUS HIBERNICUS. 

 PI. XV, fig. 4, Saw. 



Nematus hibernicus, Cam., E. M. M., xiv, 225 ; Andre, Species, 



i, 125; Cat., 19,* 112; Br. and 

 Zad., Schr. Ges. Konig., xxiv. 

 348, 86a. 



Antennae a little shorter than the thorax and abdomen, black, mode- 

 rately stout, of nearly uniform thickness ; third joint a very little 

 longer than the fourth, the others becoming very gradually shorter, 

 the last conical, one-third shorter than the third. Head a little narrower 



