102 PROCEEDINGS OF THE ACADEMY OF [Part I 



ately long, Sco extending to just beyond midlength of Rs, Sci lacking, 

 Rs long, arcuated at origin; Rs about one-half longer than R2+3', 

 cell 1st Mi elongate, pentagonal; petiole of cell Mi short, about one- 

 half m; m-cu short but distinct; Snd Anal vein straight, cell 3nd A 

 being very long and narrow. Abdominal tergites black, sternites 

 more testaceous brown. Ovipositor with the tergal valves rather 

 stout, compressed, the tips broadly and obtusely rounded; sternal 

 valves very short, flattened, the tips obliquely truncated. 



Habitat. — Peru. 



Holotype, 9 , Iquitos, March 10, 1920 (H. S. Parish). 



Tipula plumheithorax, like T. effeta, is an aberrant member of the 

 genus Tipula but the material is insufficient upon which to base 

 a new group. The general appearance of the flies suggests Tany- 

 premna but the claws are simple. 



Bibliography. 



Alexander, Charles P. 



On the tropical American Rhipidiae (Tipulidae, Dipt.)- Bull. Brookl3'n Ent. 

 Soc, vol. 8, pp. 6-17; 1912. 



A new tropical Gonomyia (Tipulidae, Dipt.). Ent. News, vol. 23, pp. 418- 

 420; 1912. 



A revision of the genus Brachvpremna Osten Sacken (Tipulidae, Diptera). 

 Journ. N. Y. Ent. Soc, vol. 20, pp. 225-236; 1912. 



New Neotropical Tipulinae (Tipulidae, Dipt.). Ann. Ent. Soc. Amer., vol. 5, 

 pp. 343-362; 1912. 



New Neotropical Antochini (Tipulidae, Diptera). Psyche, vol. 20, pp. 40- 

 '54; 1913. 



A s^Tiopsis of part of the Neotropical crane-flies of the subfamily Limnobiinae. 

 Proc. U. S. Nat. Mus., vol. 44, pp. 481-549; 1913. 



New or little-known Neotropical Hexatomini (Tipulidae, Diptera). Psyche, 

 vol. 21, pp. 33-45; 1914. 



A revision of the American species of Tanypremna Osten Sacken and Megis- 

 tocera Wiedemann (Tipulidae, Diptera). Journ. N. Y. Ent. Soc, vol. 22, 

 pp. 205-218; 1914. 



New or little-kno\\Ti crane-flies from tropical America (Tipulidae, Diptera). 

 Can. Ent., vol. 52, pp. 141-144; 1920. 



Undescribed Tipulidae collected by Mr. H. S. Parish in Brazil (Dipt.). Ent. 

 News, vol. 31, pp. 70-75; 1920. 



Records and descriptions of Neotropical crane-flies (Tipulidae, Diptera) — II. 

 Journ. N. Y. Ent. Soc, vol. 28, pp. 1-13; 1920. 

 Osten Sacken, C. R. R. 



Studies on Tipulidae — Part 1. Review of the published genera of the Tipu- 

 lidae longipalpi. Berl. Entomol. Zeitsch., Bd. 30, pp. 153-188; 1886. 



Studies on Tipulidae — Part 2. Review of the published genera of the Tipu- 

 lidae brevipalpi. Berl. Entomol. Zeitsch., Bd. 31, pp. 163-242; 1887. 

 Walker, Francis 



Insecta Saundersiana, vol. 1. Diptera, pp. 1-474; 1850-56. 

 Westwood, J. O. 



Notae Dipterologicae — No. 5. Descriptions of new species of Exotic Tipu- 

 lidae, with an annotated summary of species belonging to the same family, 

 previously described. Trans. Ent. Soc. London, 1881, part 3, pp. 363-385. 



