NOTES ON BRITISH THYSANOPTERA. 275- 
Baccha elongata, Fabr. Wingerworth. 
Ascia podagrica, Fabr. Holymoorside, Spital, Whaley, 
Upper Langwith. 
Rhingia campestris, Meigen. Spital, Barlow, Grange Hill. 
VoLUCELLIN”E. 
Volucella pellucens, L. Widely distributed, but not very 
abundant. 
ERIstALINe. 
Eristalis tenax, L. Common. 
£. wntricarius, L. Cathole, Spital. 
E. arbustorum, L. Very common everywhere. 
E. pertinax, Scopoli. Very common everywhere. 
Myatropa florea, L. Spital, Tupton, Barlow. 
Helophilus pendulus, L. Hundall, Cathole. 
MILESINZ2. 
Xylota segnis, L. Holymoorside, Cordwell Valley. 
Syritta pipiens, L. Common everywhere. 
Chrysochlamys cuprea, Scopoli. Walton, Tupton. 
Sericomyia borealis, Fallén. Ramsley Moor, Ley’s Fen. 
In the preceding list twenty-five species (those marked with. 
a +) appear to be new records for Derbyshire. The only previous 
record that we have been able to find for North- Kast Derbyshire 
is Chrysochlamys cuprea. 
Spital, Chesterfield. 
BIOLOGICAL AND SYSTEMATIC NOTES ON BRITISH 
THYSANOPTERA. 
By C. B. Wituiams, M.A., F.E.S. 
(The John Innes Horticultural Institution, Merton, Surrey, England.) 
(Continued from page 245.) 
Kakothrips pisivora (Westwood). 
I wave already (‘ Annals of Applied Biology,’ i, pp. 222-246). 
given an account of the life history of this injurious species under 
the name of K. robustus (Uzel). The name pisivora, Westwood, 
was given to the larval form and I considered at that time that 
robustus, Uzel, would for that reason have to stand. ‘There is,. 
however, no doubt that larval names when recognisable will 
have to be permitted, as in some groups, the Aleurodide for 
example, most of the species are only known in the larval and 
pupal stages. 
In the above paper figs. 9 and 6 have been interposed, while- 
fig. 8 is upside-down. Also under fig. 11 the words ‘ wide- 
