408 Mr. A. H. Ilaliday on the generic distribution 



Ent. Mag. i. 175. — Napaa stagnicola minor. Desv. Myod. 800 ? 



Abundant on pools. 



Sp. 16. hecate, E. N. fusco-senea tarsis basi ferrugineis, alis fus- 



canis, nervis transversis obscuris utrinque hyalino-guttatis. 

 Ent. Mag. i. 175. — Eph.fuscipennis, Macq. S. a B. ii. 540. 

 Holtywood : very rare. 

 Sp. 17. pusilla, E. N. nigro-amea facie albicante, pedibus nigris, 



alis fuscanis nervis transversis obscuris. 

 Meig. Dipt. Eur. vi. 126.— Eph. infecta. Ent. Mag. i. 175. 

 Hollywood, &c, rare. 



Subg. 6. Ilythea, Curt. Guide, App. 

 Caput depressum, facie convexa inter antennas elevata, nisi late- 

 ribus nuda ; clypeo recondito. Mentum incrassatum. Labella crassa, 

 retro -producta obtusa. Arista dorso pectinata. 



Sp. 18. Spilota, E. I. nigra facie ferruginosa, tarsis flavis, alis 



nigro-punctatis. 

 Curtis, Brit. Ent. 413. 

 Not rare about pools and ditches. 



Subg. 7. Ccenia, Desv. 

 Caput depressum facie protuberante et margine peristomatis vil- 

 losis aut setosis ; clypeo recondito. Arista dorso pectinata. Men- 

 tum valde incrassatum. 



* Antenna articulo 3° obtuso. 



Sp. 19. albula, E. Ccen. thorace obscure seneo, abdomine glauco 



incisuris obscuris, facie cinerascente, halteribus albidis. 

 Meig. Dipt. Eur. vi. 115. 

 Loch Fad, Isle of Bute ; August. 



Sp. 20. palustris, E. Ccen. nigro-amea facie setosa, capite pedi- 



busque nigris, halteribus fuscanis. 

 Fallen, Hydrom. 4. Meig. Dipt. Eur. vi. 115. — Ccenia, id. Macq. 

 S. a B. ii. 530. pi. 21. fig. 14.— Ccenia caricicola, Desv. Myod. 800. 

 Common in marshes. Erroneously cited as Eph. curvicauda in my 

 list of Diptera occurring about Hollywood, ' Ent. Mag.' i. 150. 



Ephydra obscura, Meig., which has been found in England 

 by Mr. F. Walker, belongs to the same section. 



** Antennce articulo 3° subconico. 

 Sp. 21. defecta, E. Ccen. nigro-aenea scutello cyanescente, an- 



tennis subtus tarsisque luteis, alis obscuris hyalino-guttatis. 

 Ent. Mag. i. 1 74. 

 Common in swampy spots. 



