410 On the British Hydromyzidae. 



Meig. Dipt. Eur. vi. 119. Macq. S. a B. ii. 537. 

 Common in moist places. 



Sp. 30. comtct, E. S. nigra thorace fu3co, facie albida, alis fus- 



canis hyalino guttatis. 

 Ent. Mag. i. 176. — Scatella cinerea. Desv. Myod. 801 ? 



Generally one half less than the last species, of which it may 

 be a variety. 



Sp. 31. quadrat a, E. S. nigricans thorace fusco lineolis albidis, 



tarsis ferrugineis, alis fusco nubeculosis margine antico nigro- 



tessellato. 



Fallen, Hydrom. 5. Meig. Dipt. Eur. vi. 119. Macq. S. aB. ii. 



538. — Notiphila id. Fallen, Act. Holm. 1813, 255. — Eph. grami- 



num. Ent. Mag. i. 176. 



Common. Varies with the face yellowish or whitish. 

 To the same group belong E. paludum, E. lacustris, and E, 

 4-guttata, Meigen. 



Subg. 9. Teichomyza, Macq. 

 Caput depressum, facie longe porrecta fornicata setosa, sub an- 

 tennis impressa ; clypeo recondite Peristomatis margo pectinatus. 

 Antennae arista elongata glabra tenui. Ungues validi curvati, ony- 

 chiis conspicuis hirtis. Abdomen feminae apice subcompressum 

 rima verticali. 



Sp. 32. fusca, E. T\ fusco-olivacea thorace lineolis 2 anticis ci- 

 nereis, alis fuliginosis, m.f. Femoribus mediis subtus pecti- 

 natis, metatarso antico incrassato, m. 

 Teichomyza fusca. Macq. S. a B. ii. 535. 



On the walls of damp outhouses, in winter ; where the larvae (as 

 observed by Macquart) are fed among the decomposed mortar. 



Subg. 10. Ephydra. 

 Caput depressum, facie porrecta fornicata villosa ; peristoma mar- 

 gine pec tinatum. Mentum canaliculatum, labella in quiete retrocus- 

 pidata excipiens. Antennae articulo 3° conico ; arista basi villosa. 

 Ungues subrecti. Onychii obsoleti. 



The singular larvae of this group are figured by Bouche. 

 The posterior spiracles are placed each at the extremity of a 

 slender conical shaft, springing from a common stem, and with 

 it longer than the rest of the body. 



Sp. 33. riparia, E. obscure aenea alis fuscanis, facie alba aut fla- 

 vicante, arista villosa. 



