JOURNAL OF ENTOMOLOGY AND ZOOLOGY 115 



each segment. These spines are directed hiterad and caudad, 

 the terminal spine more sharply caudad than the other two. 

 Sternites — Segment III with a small subaincal sjjine on either 

 side, these being- very widely separated, about midway ])etween 

 the median line and the lateral margin of the segment ; segment 

 IV with the same spines but larger and more prominent ; seg- 

 ments V to VII similar but with another pair of small spines 

 about midlength of the segment and much nearer to the middle 

 line of the bodj'. Segments II to VII with a subbasal triangular 

 pit or mark, widely separated. Eighth tergite with the caudal 

 margin rounded, concave, the lateral angles produced backward, 

 upward and slightly outward as strong spines; suture on the 

 ventral surface incomplete ; two small spines on either side of 

 the middle line of the body. Ninth tergite produced caudad as 

 two strong, parallel, spinous projections. Hypopygium from 

 beneath, the lower valve very long, about concealing the dorsal 

 valve, at its tip with four small spines directed outward and 

 caudad, these spines on the caudo-lateral angle of the segment. 

 (See figure 1 of plate II). 



Female — Very similar to the male, the antennal sheaths 

 smaller and not so closely approximated basally ; the lower valve 

 of the ninth segment slender, obtuse at apex, feebly notched; 

 upper valves broader, longer, with a deep median split, the lobes 

 rounded. (See figures 3 and 4 of plate II). 



Larva described from one specimen taken in Coy Glen, Ithaca, 

 N. Y., May 8, 1913. 



Pupffi described from two females; Cascadilla creek, Ithaca, 

 N, Y., killed on May 30, 1913. (One taken as a fully- grown larva. 

 May 7, 1913, by Miss Eudora F. Tuttle; the other taken by the 

 author as a larva on May 11). 



Two pupa> from Orono, Maine, killed on June 17, 1913, and a 

 third fully-colored specimen from the same place on June 19. 



A Bibliography of the Immature Stages of the Cylindrotomini 



General 

 Ostcn Sacken 1897 



Remarks on the literature of the earlier stages of the Cylin- 

 drotomini, a section of the Tipulida?. Trans. Ent. See. Lond., pp. 

 362-366. 



