EXPLANATION OF PLATES. 
All the figures were drawn by the author from specimens examined under the 
binocular microscope. 
PuaTE 1. 
Fie. 1.—Caenotus inornatus, new specics. Antenna. 
2.—C, inornaius, new species. Female. 
3.—C. inornatus, new species. Genitalia of male. 
4.—C. minutus, new species. Male. 
PLATE 2. 
Fie. 5.—Henicomyia hubbardi Coquillett. Dorsal view of male. 
6.—H., hubbardi Coquillett. Antenna. 
7.—H. hubbardi Coquillett. Lateral view of male. 
PuatTe 3. 
Fie. 8.—Nebritus pellucidus Coquillett. Antenna. 
9.—N. pellucidus Coquillett. Female. 
10.—N. pellucidus Coquillett. Male genitalia. 
11.—Pherocera signatifrons, new species. Antenna. 
12.—P. signalifrons, new species. Female. 
13.—P. signatifrons, new species. Head. 
14.—P. flavihalleralis, new species. Front of head. 
15.—P. flavipes, new species. Front of head. 
16.—Chromolepida bella, new species. Front of head 
17.—C. bella, new species. Antenna. 
18.—C. bella, new species. Genitalia. 
PLATE 4. 
Fie. 19.—Epomyia rufiventris (Loew.) Wing of female. 
20.—E. pictipennis (Wiedemann). Front of head of female. 
21.—E. bella, new species. Front of head of female. 
22.—E. pictipennis (Wiedemann). Wing of female. 
23.—E. sumichrasti (Bellardi). Wing of female. 
24..—E.. sumichrasti (Bellardi). Front of head of female. 
25.—E. rufiventris (Loew). Front of head of female. 
26.—E. scutellaris (Loew). Front of head of female. 
27.—E. bella, new species. Wing of female. 
28.—E. pictipennis (Wiedemann). Front and middle tibiae and tarsi. 
29.—E. scutellaris (Loew). Wing of female. 
30.—E, scutellaris (Loew). Antenna. 
31.—E. bella, new species. Antenna. 
32.—LH. sumichrasti (Bellardi). Antenna. 
33.—E. sumichrasti (Bellardi). Male genitalia. 
34.—E, pictipennis (Wiedemann). Male genitalia. 
35.—E. scutellaris (Loew). Male genitalia. 
36.—E, pictipennis (Wiedemann). Antenna. 
37.—E. rufiventris (Loew). Antenna. 
135. 
