YORKSHIRE HYMEXOPTERA IN 1879, 1880 AXD 1S81. 97 



York in 1879 or 1S80 (Wilson, Ent., p. 90). 



B. tenuicornis (Kl.) See second list, p. 64. 



NEMATINA. 



X Hemichroa a\n'\(Z.J Near York, three specimens bred 

 in 1879 or iSSo (Wilson, Ent., p. 90). 



X Cladius viminalis (Fall.) Near York, 1879 or 1880, the 

 larvte found under the leaves of the balsam and black poplars, 

 seven or eight together (Wilson, Ent., p. 89). 



CrcESUs septentrionalis (L.) See first list, p. 28. 



York, visited the locality during 1S79 and 1880. In the 

 former year I noticed it upon alder, birch and hazel, stripping the 

 bushes: in 1880 I noticed it only on birch, but in greater numbers 

 than in the previous year. It is not, I believe, a species of general 

 occurrence, though when it does occur it is found in some abun- 

 dance, from its being a gregarious feeder (Wilson, Ent., p. 88). 



X C. varus Devill. York; I had the good fortune to meet 

 with a number of larvae in 1S79, feeding upon some small alder- 

 trees in this neighbourhood (Wilson, Ent., p. 89). 



X C. latipes Devill. Near York. I met with a dozen larv^ 

 on some birches in a hedgerow in 1879 (Vvilson, Ent, p. 88). 



Nematus capre^ Pz. See first list, p. 28. Near York, 

 five specimens bred in 1S79 or 1880 (V\'ilson, Ent., p. 90). 



N. conduct US Ruthe. See first list, p. 28. 



X N. hortensis Htg. One example, 1881, Holgate (Wilson). 



X N. myosotidis Fab. Near York, three specimens, 1879 

 or 1S80 (Wilson, Ent., p. 90). 



X N. luteus Fz. One example, seated on an alder-leaf, 

 Holgate, 1 88 1 (Wilson). 



N, bilineatus Kl. See first list, p. 28. Near York, 1879 

 or 1880, five specimens bred (Wilson, Ent., p. 90). 



N. ribesii Scop. See first list, p. 28. 

 Huddersfield, 1879, very common (S. D. Bairstow). 



D7 



