238 PROCEEDINGS OF THE NATIONAL MUSEUM. 



2. SUBQUADRANGLE {S.q.) AND CELL BELOW IT. 3. NODUS («.«., 

 SUBNODUS). 



Type. — U.S.G.S. 1133, on the same piece of reddish rock as the 

 type of CaTlospilopteron, almost touching it. 

 Green River, Wyoming (Scudder collection). 

 HoJotype.—C&t. No. 66551, U.S.N.M. 



This differs from Podagrion ahortivwn Scudder by the shorter 

 stigma, but the difference is similar to that between the anterior and 

 posterior wings of Megapodagrion, though rather more pronounced. 

 If Scudder's insect was a hind wing, the present one may possibly 

 represent the anterior wing of the same species. I have given it a 

 different name, since it is not a Megapodagrion (Podagrion), and the 

 characters principally relied upon for its cla.-sification are not visible 



in Scudder's type. Scud- 

 "T~ der's insect may stand 

 provisionall}'' as Eopo- 

 dagrion ( ?) ahortivum. 



Tilly ard^ regards my 

 subfamily D5'sagrioni- 



Fio.l.— EopoDAGEiONscuDDERi. 1. Stigma AND ADJACENT PARTS, j-^g^g g^g q^ synonym of 



his Megapodagrioninae, 

 but my name has prior- 

 ity, a fact which he apparently does not consider of any consequence. 

 The vertical subnodus seems really to be a primitive character =* in 

 spite of Mr. Wilhamson's opinion expressed in 1908.^ 



TRICHOPTERA. 



Family LIMNEPHILIDAE. 



LIMNEPHILUS (sens, lat.) EOCENICUS, new species. 

 Plate 32, fig. 5. 



Anterior wing, 10 mm. long and 3 broad; pallid, more or less strigose 

 or speckled; apex obtuse, outer margin obliquely descending; the 

 whole form and appearance as in modern LimnepMus, but the vena- 

 tion can not be made out. The wing is singularly like that of a moth, 

 but under the microsope it is possible to see groups of hairs, precisely 

 as in LimnepMus. The only discrepancy is in the fringe, v.'hich 

 appears to have been longer than m LimnepMlus, and more like that 

 of OxyetUra, which has a quite differently shaped wing. 



Type.— U.S.G.S. 1242. Roan Mountain, Colorado (Scudder). 



Holotype.— Cat. No. 66552, U.S.N.M. 



It is a singular thing that no true Limnephilidae are found in 

 Baltic amber. The family occurs ha the Miocene of Florissant, and 



' The Biology of Dragon flies, 1917, p. 316. 



2 Idem, p. 55. 



8 Amer. Journ. ScJ., vol. 26, p. 73. 



