276 



LIST OF HERTFORDSHIRE DIPTERA. 



L. melania, Hal. — *Felden, 



10. iii. 97. 

 L. litoralis, Stnh. — *Feldeu, 



13. iv. 97. 

 L. leucoptera, Hal. — *Feldeii, 



27. iii. 97. 

 L. aterrima (PBorborus 



aterrimus, Hal.). — *Felden, 



8. iv. 97. 



Many of the species of Bor- 

 boridae in the unincorporated 

 collection have been examined 

 and named by Mr. J. C. 

 Collin, and in some cases his 

 determination as given above 

 differs from Mr. Piffard's. 

 There are also some unnamed 

 specimens from Felden. 



Phorid^. 



Conicera atra, Mg. — *Tring, 

 • A.P., 3. V. 97; *Felden, 



• 15. V. 97. 

 Phora urbana, Mg. — * Felden, 



23. iii. 97. 

 P. opaca, Mg. — * Felden, 



10. iv. 97. 

 P. abdominalis, Fin. — Felden, 

 10. X. 97. 



P. ? incrassata, Mg. — * Felden, 



l.ix. 99. 

 P. rufipes, Mg. — * Felden, 



19. i. 97. 



P. ? heraclea. — ^'Felden, 



16. ii. 97. 

 P. '? nigricornis,^'^^. — * Felden, 



20. iv. 97. 



Many unnamed specimens from 

 Felden. 



HlPPOBOSCID^. 



Ornithomyia avicularia, L. — 

 St. Albans (from sparrow), 

 vi. 04 ; (from owl), x. 04. 



Stenopteryx hirundinis,Iy. — St. 

 Albans (from swift), vi. 04; 

 Hemel Hempstead (from 

 sand-martin). Bullet, vii. 99. 



Trans. Hertfordshire JSf at. Hist. Soc, Vol. XIII, Part A, Septtmber, 1908. 



