404 Mr. A. H. Hallday on the generic distribution 



Sp. 13. alhilahris, H. nigra nitida facie alba, antennarum arti- 

 culo 3° fulvo, halteribus basi palpisque nigris. 



Notiphila id. Meig. Dipt. Eur. vi. 71. — Discocerina id. Macq. 

 S. a B. ii. 528. — Hydrellia argyria. Desv. Myod. 793. 



The third joint of the antennae is more orbiculate than in 

 the rest, and the wings nearly lanceolate, with the radial nerve 

 shorter. 



In meadows ; Hollywood ; very rare. 



Subg. 2. Atissa, Curt. Guide App. 

 Antennae articulo 3° sphseroideo subcompresso, arista dorso brevi- 

 ter pectinata. Facies brevis sub antennis utrinque impressa margine 

 infero prominulo. Alse lanceolatse. Nervus discoidali-recurrens a 

 margine remotus. 



Sp. 14. pygmaa, H. A. cinerea facie albida, antennis tarsisque 



ferrugineis. -f lin. 

 Ephydra id. Ent. Mag. i. 174. 

 In a salt marsh, Hollywood. 



Subg. 3. Glenanthe. 

 Antennae articulo 3® orbiculato compresso, arista brevi subtilissime 

 pubescente. Facies sub antennis utrinque impressa, medio longi- 

 trorsum convexa. Oculi inferne attenuati, subangulati. Nervus 

 discoidali-recurrens ab alae margine distans. Fern. Abdomen apice 

 rima longitudinali tuberculum muricatum includente. 



Sp. 15. ripicola, H. G. cinerea fronte thoraceque ferruginosis, 



antennis tibiis tarsisque ferrugineis, facie albida ; m.f. 1 lin. 

 On the muddy sea-coast, Hollywood. 



Gen. 4. EPHYDRA, Fallen. 

 Oculi glabri s. vage pubescentes. Antennae articulo 2° exungui- 

 culato. Proboscis magis incrassata. Femora subaequalia. 



Subgenerum Synopsis. 

 Areolae probrachialis et analis 



parvae completse, 11. Canace. 



incompletse ; — ungues 



subrecti onychiis obsoletis, 10. Ephydra. 



curvati onychiis hirsutis ; — caput 



parum depressum : — nervus transversus 



prope marginem alae, 4. Pelina. 



a margine remotus ; — facies 



lateribus ciliata, 1. Hydrina. 



vix nisi nuda ; — nervus costalis 



alae apicem ambiens, 2. Hyadina. 



in alae apice desinens, ...,, 3. Axysta. 



