283 TIPULIDT':. 



c c. Fork of the first externo-medial vein without a petiole between 

 it and the discal areolet.-— Meig. Zw. i. 131. Div. II. pi. 6. f. 4. 

 Limnopldla p., Mcq. Species 19. 

 b b. First externo-medial vein not forked. 



c. Radial vein forked.— Meig. Zw. i. 132. Div. K., L. pi. 5. f. 4, 6. 



Limnopldla p., Mcq. Species 20-22. 

 c c. Eadial vein not forked. 



d. Veinlet between the subanal and the third externo-medial in 

 a line with the inner side of the discal areolet, or nearer to 

 the base of the wing. 



e. Subcostal vein ending where it joins the radial. — Meig. 

 Zw. i. Div. P. pi. 4. f. 18. Limnobia p., Mcq. Species 

 23-26. 

 e e. Subcostal vein prolonged bevond the veinlet which joins 

 it with the radial.— Meig. Z\\. i. 137. Div. O. pi. 4. f. 13. 

 Limnobia p., Mcq. Glocliina p., Meig. Species 27—31. 

 d d. Veinlet between the subanal and the third externo-medial 

 very nearly opposite the inner end of the discal areolet. — 

 Meig. Zw." i. 133. Div. N. pi. 6. f. 5. Limnobia p., Mcq. 

 Glockina p., Meig. Species 32-42. 

 d d d. Veinlet between the subanal and the third externo-medial 

 nearly opposite the middle of the discal areolet. 

 e. Subcostal vein ending where it joins the radial. — Meig. 



Zw. i. 133. Div. M. pL 4. f. 19. 

 e e. Subcostal vein prolonged beyond the veinlet which joins 



it to the radial.— Meig. Zw. i. 147. Div. S. pi. 4. f. 17. 

 e e e. Subcostal vein no^ joining the radial. — Meig. Zw. i. 

 132. Div. L. pi. 5. f. 4. 

 d d d d. Veinlet between the subanal and the third externo-me- 

 dial opposite one-third of the length of the discal areolet. 

 e. A veinlet between the radial vein and the costa. — Meig. 



Zw. i. 146. Div. E. pL 6. f. 7. Species 43, 44. 

 e e. No veinlet between the radial vein and the costa. Species 

 45. 

 a a. No discal areolet. 



b. Third externo-medial vein forked. 



c. Radial vein joined by two veinlets to the subcostal. Spe- 

 cies 46. 

 c c. Radial vein joined by one veinlet to the subcostal. 



d. Cubital vein forked.— Meig. Zw. i. 148. Div. U. pi. 5. f. 8.— 



TricypJiona, Zett. Species 47. 

 d d. Cubital vein not forked. — Meig. Zw. vi. 279. Div. AV. pi. 

 65. f. 4. Species 48, 49. 

 b b. Third externo-medial vein not forked. 



c. Axillary vein curved abruptly to the hind border. Species 50. 

 c c. Axillary vein not curved abruptly to the hind border. Species 

 51-53. 



