AMERICAN DIPTERA. 



395 



PLATE III. 



Fig. 1. — Antenna of Stenopogon latipennis. 



" 2. — " " Stenopogon inquinatus. 



" 3. — " " Stenopogon helvolus. 



" 4. — " " Stenopogon modestus. 



" 5. — " Dizonias pilatei. 



" 6. — " " Taracticus octopunctatus. 



" 7. — " " Ospriocerus abdominalis. 



" 8. — " " Dioctria albius. 



" 9. — " " Cyrtopogon plausor. 



" 10. — " " Deromyia bilineata. 



PLATE IV. 



Fig. 1. — Antenna of Laphystia opaca. 



Ceraturgus cruciatus. 

 Ceraturgopsis cornutus. 

 Nicocles politus. 

 Willistonina bilineatus . 

 Holcocephala abdominalis. 

 Holopogon. 

 Lasiopogon opaculus. 

 Stichopogon trifasciatus. 

 Leptogaster pictipes. 

 Psilocurus nudiusculus. 



2. — 

 3.— 

 4.— 

 5.— 

 6.— 

 7.— 

 8.— 

 9.— 

 10.— 

 11.— 



PLATE V. 



Fig. 1. — Head of Deromyia. 



2.— 

 3.— 

 4.— 

 5.— 



6.— 



7.— 

 8.— 

 9.— 



Fig. 



Fig. 



Micostylnm. 



Stenopogon. 



Holcocephala. 



Holopogon. 



Laphystia. 



Stichopogon. 



Ter adieus. 



Leptogaster. 



PLATE VI. 



1. — Leptogaster badius, $, enlarged about 3$ X. 

 2. — Callinicus calcaneus, 9 , enlarged about 3 X. 

 3. — Deromyia sallei, 9> enlarged about If X. 

 4. — Microtylum morosum, 9 . enlarged about 1§ X. 

 5. — Plesiomma unicolor, 9> enlarged about 2\ X. 

 6. — Chrysoceria pictitarsis, enlarged about 3£ X. 



PLATE VII. 

 1. — Ceraturgus cruciatus, 9» enlarged about 3 X. 

 2. — Dizonias pilatei, 9» enlarged about 2| X. 

 3. — -Willistonina bilineatus, 9. enlarged about 3£ X. 

 4. — Saropogon dispar, rf, enlarged about 2J X. 

 5. — Ospriocerus abdominalis, 9. enlarged about 3 X. 

 6. — Ceraturgopsis cormitus, 9. enlarged about 2f X. 



TRANS. AM. ENT. SOC, XXXV. 



SEPTEMBER, 1909 



