98 YORKSHIRE HYMENOPTERA IN 1879, 1880 AND 1881. 



■ York, 1880, very abundant (Wilson, Ent., p. 90). 



York, 1 881: there is a little fact in connection with this 

 species which may be worth recording, as it is said that some 

 species of sawflies are without males. One fine morning in the 

 month of May I was strolling round the garden, when my atten- 

 tion was suddenly called to a swarm — I may say, for it very much 

 reminded me of a swarm of bees — of about one hundred or more 

 of the males of this species suddenly congregated together and 

 flying about apparently in a state of excitement. On looking 

 about me for the cause of this strange gathering my eye rested 

 on fifteen or twenty on a heap ; I pushed them aside to see what was 

 up, and to my surprise there was a newly-emerged female (Wilson). 



X N. miliaris /'2:.=virescens Htg. Huddersfield, 1879 

 (Bairstow). 



York, five specimens bred in 1879 or 1880 (Wilson, Ent, p. 90). 



N. viminalis L. See first list, p. 28. 



York, 1879 and 1880. In pea-shaped and round galls, mainly 



on the under side of leaves of willows. I met with it near York 

 on two or three bushes, the two different-shaped galls being on 

 bushes very near each other. Whether the bushes on which both 

 galls were found are one species of willow, or two distinct species, 

 I cannot exactly say : only this appeared to be certain, that the 

 same insect is produced from both (Wilson, Ent., p. 90). 



X N. pedunculi Htg. York, 1881, found the galls 'of this 

 species sparingly on narrow-leaved sallows. Named by Mr. E. A. 

 Fitch (Wilson). 



N. gallicola fF^^/.=vallisnieri Htg. See first list, p. 28. 



Cryptocampuspentandrae(i?<?/£.)=medullarius(i7?^.) 



Mr. Peter Cameron informs me that the insects recorded by 

 Mr. Peter Inchbald as C. august us Htg., were wrongly named and 

 really pertained to this species. Therefore the record at p. 28 

 of the present volume of the Transactions should be corrected 

 accordingly (Roebuck). 



Trans.Y.N.U., 18S0 (pub. 1882). Series D 



