The Crane-Flies of New York — Part II 967 



The adult flies of Cylindrotoma tarsalis Johns., the only species that 

 the writer has ever found in nature, are common on rank vegetation in 

 cool, boggy, and swampy woods. The immature stages of the genotype, 

 C. distinctissima (Meig.), have long been known, having been discussed 

 by Schellenberg (1803), Boie (1838), Zeller (1842), Kaltenbach (1874), 

 and others. The larva shows some resemblance to that of Phalacrocera, 

 but is almost entirely terrestrial in its habits, feeding on the leaves of 

 various spermatophytic plants such as Caltha palustris, Anemone nemorosa, 

 Ranunculus repens, Chrysosplenium, Stellaria nemorum, Sanicula europaea, 

 Viola biflora, Valeriana officinalis, Allium, and others. It attains a length 

 of nearly 25 millimeters, and is narrow, depressed, tapering to either end, 

 and of a grass-green color. There is a slight dorsal ridge from which a 

 row of short, fleshy spines projects, these spines being directed backward 

 and one spine on each segment being longer than the others. There is a 

 broad lateral margin . bearing very short processes, and there are also 

 eight pairs of ventral ridges without hooks and a pair of longer backward- 

 directed processes near the anus. The pupa affixes itself to stalks or leaves 

 by the caudal end, to which the remains of the last larval skin adhere. 

 The larvae generally remain on the lower surface of the leaves, on which 

 they feed, gnawing holes in them. When about to pupate they generally 

 leave their food plants and fasten themselves on grass blades and leaves 

 near by, usually pupating the following day. From the foregoing obser- 

 vations it would seem that there are in the various locahties two genera- 

 tions a year, one in the spring and the other in the autmnn. 



The life history of C. splendens has recently been worked out in con- 

 siderable detail by Dr. A. E. Cameron, thru whose kindness the writer 

 has received specimens for study. 



Cylindrotoma splendens Doane 



1900 Cylindrotoma splendens Doane. Journ. N. Y. Ent. Soc, vol. 8, p. 197. 



1900 Cylindrotoma juncta Coq. Proc. Wash. Acad. Sci., vol. 2, p. 401. 



1918 Cylindrotoma splendens Cameron. Ann. Ent. Soc. Amer., vol. 11, p. 67-89. 



Cylindrotoma splendens is an interesting crane-fly occurring from British 

 Columbia northward to Alaska. Dr. Cameron's excellent notes on the 

 life history of this species are abstracted in detail on pages 708 to 710 

 of this paper. The following descriptions were made from material sent 



