1902.) 107 



the sides diverge from the basal ridge much less rapidly, the general effect being 

 that the postpetiole of bifasciatus looks, and is, distinctly broader than long, whereas 

 that of ninuatus looks longer than wide, although actually the apical margin is 

 longer than the length of the postpetiole ; the longitudinal fovea of the dise in 

 hi fascia! us is also less defined than in sinuatus ; besides these structural characters 

 the pronotura is entirely black, the legs are less ornamented with yellow, and the 

 abdominal bands are slightly narrower. 



St. Ann's, Woking : 



April 8tk, 1902. 



NOTES AND QUERIES ON MR. VERRALL'S LIST OF BRITISH 

 DIPTERA, SECOND EDITION. 



13Y 0. W. DALE, F.E.S. 



1. — Why is Typhlopsylla assimilis, Tasch., Ent. Mo. Mag., vol. xxvii, p. 1 70, 

 xxviii, p. 67, relegated to the reputed list ? 



2. -Where lias the Hon. N. Rothschild described his species of Pu/icidce? 



3. — Why is Pericoma punctum, Eaton, omitted ? 



4. — Is not Mycetophild ornata, Steph., an older name for M. lutescens, Zett., 

 and M. zonula, Steph., a synonym of Rhymosia fasciata, Mg. ? They were both 

 figured and described by Stephens in 1835. 



5. — Is not Culex concinnus, figured and described by Stephens, a synonym of 

 C. lateralis, Mg. ? 



6. — Why is Culex guttatus, Mg., figured by Curtis, omitted ? 



7. — Why is the pretty Cecidomyia pictipennis, Mg., omitted ? It was included 

 in ■Curtis's Guide on the strength of specimens taken by my father here in February. 



8. — Is not Diomyza pulchra, Mg., figured by Stephens, a synonym of Lasio- 

 ptera rubi, Schr. ? 



9. — Is not Chironomus dolens, Wlk., a synonym of C, ant Ar acinus, Zett. ? 



10. — Why is Chironomus tarsalis, Wlk., omitted, and C. modicellus, Wlk., in 

 the reputed list ? They both occur here ; they are both probably only synonymic 

 names, but of what species ? 



11. — -Why is the old genus Ceratopogon kept in one heterogenous mass, whilst 

 Cecidomyia, Tachina, Anthomyia, &e., have been so cut up ? Surely the following 

 generic names ought to be again adopted : Spkceromyia, Curt., type fascial us, Mg., 

 == albomarginatus, Curt. ; Culicoides, Ltr., type pulicarius, L. ; Serromyia, Mg., 

 type femoratus, Mg. ; Forcipomyia, Mg., type bipunctatus, L. 



12. — The larva; of F. bipunctatus live under the bark of elm ; and the larvae of 

 Scatopse albitarsis in the pith of the burdock. 



13. — There is a third species of Xiphura — ruficornis, Mg. It is a slightly 

 'larger species than A", nigricomis, Mg.,but the chief distinction lies in the antennae. 

 Those of nigricomis are entirely black, but of ruficornis only the basal joint is 

 black, the remaining portion being red. My specimens of ruficornis came from 

 Rannoch and North Wales. Nigricomis appears to be confined to the New Forest. 



