1914.] NATURAL SCIENCES OF PHILADELPHIA. 599 



Holotype, cf, at the foot of Mt. Katahdin, Piscataquis Co., Me., 

 along the Abol trail; altitude about 1,000 feet, August 22, 1913 

 (Alexander). 



Allotype, 9 , topotypic. 



Paratypes, 9 cf , 5 9, topotypic (Morse and Alexander). 1 cf, 

 1 9 ,, Ellsworth, Hancock Co., Me., August 26 and September 1, 1913 

 (C. J. Stanwood). 



Paratypes have been deposited in the Museum of Comparative 

 Zoology (through Prof. Morse) ; Boston Society of Natural History, 

 Maine Experiment Station, American Museum of Natural History, 

 The Academy of Natural Sciences of Philadelphia, and the U. S. 

 National Museum. 



Related to Tricyphona vernalis Osten Sacken (PI. XXV, fig. 8), but 

 is a very different species. The size, sex for sex, is smaller; no sign 

 of the gray coloration so characteristic of vernalis; wings much paler, 

 yellowish, and the markings are reduced to mere spots and narrow 

 seams as described above, not conspicuous rounded clouds. In 

 normal individuals of both species, vernalis has cross-vein 7n-cu 

 present and cell Ms consequently very long; katahdi?i has Cui and 

 Ms fused for a greater or less length; the forks of cell Mi and R4 are 

 much shorter in katahdi7i than in vernalis. 



Genus POLYANG.ffi:US Doane. 



1900. Polyangmns Doane; Journ. N. Y. Ent. Soc, vol. 8, p. 196. 



Polyangaeus maculatus Doane. 



1900. Polyangccas maculatus Doane: Journal of the New York Entomological 

 Society, vol. 8, p. 197, pi. 8, fig. 20. 



The type is apparently not in the collection of the U. S. National 

 Museum with the remaining Doane types. There are a few speci- 

 mens from Eureka, Humboldt Co., Cal., May 22, 1903, taken by 

 Mr. H. S. Barber. 



Genus DICRANOTA Zetterstedt. 

 1838. Dicranoia Zetterstedt; Ins. Lapponica, Dipt., p. 8.51. 

 Dicranota pallida sp. n. 



Size large, wing over 7 mm.; body coloration light yellow; cell 

 Ml present, deep; cross-vein m present. 



Female, length, 8 mm.; \ving, 8.1 mm. 



Rostrum and palpi pale yellow. Antennae with the two basal 

 segments pale yellow, the flagellum broken. Head yellow. 



Thoracic dorsum light yellow, lobes of the scutum, basal portion 

 of the scutellum and the postnotum more brownish. Pleurae dull 

 yellow. Haltores broken. Legs, coxae and trochanters dull yellow, 



