225 



Lake May, Berkshire Co., Mass., in sphagnum bog, altitude 

 1500 feet, July 1, 1925 (C. P. Alexander); holotype. Orono, 

 Penobscot Co., Maine, June 6, 1913 (C. P. Alexander); paratype. 



287. Ormosia megacera Alex. (Can. Ent., vol. 49, p. 26, 1917). 

 Canada Brook, Echo Lake, Mount Desert, September 1, 1926 



(C. P. Alexander) . The conditions under which this fly was taken 

 are discussed in the second part of this paper. 



288. Erioptera (Erioptera) furcifer Alex. (Bull. Brooklyn Ent. 



Soc, vol. 14. p. 108, 1919). 

 Amherst, Mass., July 26, 1926 {Kenneth Salman). Two other 

 species of the chlorophylla group (chlorophylloides Alex, and 

 subchlorophylla Alex.) may be expected in New England, though 

 not yet recorded. 



289. Tipula concava Alex. (Ent. News, vol. 37, p. 294, 1926). 

 Paratype, cf , Winnipauk, Conn., June 16, 1909 (C. W. John- 

 son). 



290. T. tennessa Alex. (Can. Ent., vol. 52, p. 226, 1920). 

 Cohasset, Mass., October 20 (Owen Bryant); Faneuil, Mass., 



1904 (A. P. Morse). 



(58). Molophilus sorer, sp. nov. 



This species was erroneously determined by myself (Cornell 

 Univ., Agr. Exper. Sta., Mem. 25, p. 906, 1919) as being M. 

 comatus (Doane), and was so recorded by Mr. Johnson in his New 

 England list. The species is discussed on p. 231 of the present 

 paper. 



Mount Desert, Maine, August 26-September 12, 1926. 



Through the great kindness of Dr. and Mrs. H. T. Fernald, 

 Mrs. Alexander and I were able to spend three weeks at the Fer- 

 nald home, near Southwest Harbor. The collections of crane- 

 flies made on the western half of Mount Desert during this period 

 are very rich and representative of the late summer and early 

 autumnal fauna of the island. Approximately a score of species 

 were added to the island list. 



Collections were made in favorable situations at and near 

 Southwest Harbor, and on all of the mountains west of Somes 

 Sound. Special attention was devoted to the arborvitae swamps 

 which are so characteristic of the low-lying portions of the island. 

 The extensive swamp along Canada Brook, the southern inlet of 

 Echo Lake, may be briefly discussed as being typical of numerous 



