298 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. 



35a, game, antenna of male; 36, nubifer, new species, wing of male; 37, barbicauda, 

 new species, hypopygial lamella; 37(7, same, antenna of male; 38, biseLosiis, 

 new species, hypopygial lamella; 38a, same, antenna of male; 39, intenlus 

 Melander and Brues, hypopygial lamella (copied); 40, angusticornis, new 

 species, antenna of male; 40a, same, hypopygial lamella; 41, mquaUs, new 

 species, wing of male; 41a, same, hypopygial lamella; Alb, same, fore tarsus of 

 male; 42, litoralis, new species, hypopygial lamella; 42a, same, wing of male; 

 43, pachardi, new species, wing of male; 44, janthocnemus I;oew, \ving of male; 

 44a, same, antenna of male; 45, albiciliaius Loew, wing of male; 45a, same, 

 hypopygial lamella; 46, alacer, new species, wing of male; 46a, same, hypopygial 

 lamella; 47, partitus Melander and Bruas, wing of male; 47a, same, antenna of 

 male; 48, setifer Loew, wing of male; 48a, same, antenna of male. 



Plate 4. 



Figs. 49-60: 49, retinens, new species, anterior tilna and tarsus; 49a, same, wing of 

 male; 50, remipes Wahlberg, wing of male; 50a, same, posterior tarsus of male (in- 

 verted); 51, sedulus, new species, wdng of male; 51a, same, hypopygial lamella; 

 52, groenlandicus Zetterstedt, wing of male; 52a, same, hypopygial lamella; 53, 

 incongruus Wheeler, wing of male; 53o, same, hypopygial lamella; 54, remus, 

 new species, wing of male; 54a, same, hypopygial lamella; 546, same, middle 

 tibia of male; 54c, same, middle tarsus of male (inverted); 55, adultus, new 

 species, wing of male; 55a, same, hypopygial lamella; 556, same, antenna of 

 male; 56,fusiformis, new species, wing of male; 56a, same, hypopygial lamella; 

 57, wnbrosus, new species, wing of male; 57a, same, hypopygium of male; 58, 

 laticorais Loew, Aving of male; 58a, same, antenna of male; 59, nodipennis, new 

 species, wing of male; 59a, same, antennae of male; 60, solidus, new species, wing 

 of male. 



Plate 5. 



Figs 61-77: 61, bryanti, new species, wing of male; 62, amnicola Melander and Brues, 

 wing of male; 62a, same, antenna of male; 63, opportunus, new species, wing of 

 male; 63a, same, hypopygial lamella; 636, same, antenna of male; 64, humilis, 

 new species, wing of male; 64a, same, antenna of male; 65, brevicauda, new 

 species, wing of male; 65a, same, hypopygial lamella; 656, same, antenna of 

 male; 66, varipes Coquillett, wing of male; 66a, same, fore tarsus of male; 67, 

 flavUacertus, new species, wing of male; 67a, same, antenna of male; 68, rupestris 

 Haliday, wing of male; G9,fucatus, new species, wing of male; 69a, same, hypopyg- 

 ial lamella; 70, apheles Melander and Brues, wing of male; 70a, same, hypopygial 

 lamella; 71, affluens, new species, wing of male; 71a, same, hypopygial lamella; 

 72, distolor, new species, wing of male; 72a, same, hypopygial lamella; 73, 

 sincerus, Melander, wing of male; 74, sincerus, var. subdirectus, new variety, 

 wing of male; 75, genualis, new species, wing of male; 75a, same, hypopygial 

 lamella; 77, obsoletus, new species, wing of male. 



Plate 6. 



Figs. 78-91: 78, trisetosus, new species, wing of male; 78a, same, antenna of male; 



79, comatus Loew, middle tibia and basitarsus of male; 79a, same, wing of male; 



80, virgn Coquillett, wing of male; 80a, same, fore tarsus of male, from above; 82, 

 pachycnemvs Loew, antenna of male; 82a, same, In^popygial lamella; 826, same, 

 hind femora of male; 82c, same, fore tarsus of male; 83, ungulatus Linnaeus, 

 wing of male; 83a, same, hypopygial lamella; 84, barbipes, new species, anterior 

 tibia and tarsus of male (inverted); 85, brevipennis Meigen, wing of male; 85a, 

 same, fore tarsus of male (inverted); 86, dasyops Malloch, hypopygial lamella 

 (copied); 87, ornatipennis, new species, wing of male; 87a, same, hypopygial 

 lamella; 88, dorycerus Loew, wing of male; 88rt, same, antennae of male; 886, 



