1914.1 NATl UAL SCIENCKS OK I'llILADKLlMll A. -iVIU 



Holotype, cf , at the foot of j\It. Katalulin, Piscataquis Co.. Me., 

 along the Ahol trail; altitude about 1,000 feet, August 22, 19i;i 

 (Alexander) . 



Allotype, 9 , topotypic. 



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

 1 9 , Ellsworth, Hancock Co., Me., August 2(5 and Sci)tcnilH'r 1, 1913 

 (C. J. Stanwood). 



Paratypes have been deposited in the Museum of Comparative 

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

 Z^Iaine Experiment Station, American Museum of Natural History, 

 The Academy of Natural Sciences of Philadeli)liia, and the T. S. 

 National Museum. 



Related to Tricijphona 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'[)aler, 

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

 seams as described above, not conspicuous roundetl clouds. In 

 normal individuals of both .species, vernalis has cross-vein in-ru 

 present and cell M, consequently very long; katahdin has Cw, and 

 Ma fused for a greater or less length; the forks of cell .1/, and 7/, are 

 much shorter in katahdin than in vernalis. 



Onus POLYANGJEUS Doai.e. 

 lilOO. I'oh/anga-iix Doane; .lourn. X. Y. Knt. Soc, vol. S, p. 10(1. 

 Polyangseus maculatns Doanc. 



1900. Polyaiigaiix mtinilalus Doane; Journal of the New \in-k Entomological 

 Society, vol. S, p. 197, pi. S, 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. 1908, taken by 

 Mr. H. S. Barber. 



Gcuus DICEANOTA Zi-tt.-rsfjt. 

 1838. Dirrattold Zottorstcdl ; Ins. Lapponica, Dipt., ]>. S.")l. 

 Dicranota pallida sp. n. 



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

 .1/, present, deep; cross-vein m present. 



Female, length, 8 mm.; wing, 8.1 mm. 



Rostrum and palpi pale yellow. Antenna' with the two basal 

 segments pale j-ellow, the flagelliun broken. Head yellow. 



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

 of the scutelknn and the postnotum mf)rc brownish. Plcuric dull 

 vcUow. Haltercs broken. Legs, cox;p and trochanters dull yellow. 



