ART. 2 NEW UNDESCEIBED CEAN'E ELIES ALEXANDER 17 



Basistyle (&) relatively large, the mesal margin with a dense patch 

 of short spines and longer setse, and a smaller group of very long 

 slender setae. Outer dististyle {d) broadly flattened, dilated distally, 

 the outer angle a blunt point, the inner angle produced into a slender 

 fleshy lobe that is set with small black spines, as common in the 

 tribe. Inner dististyle longer and more slender, gently curved, the 

 lower margin with small spinous setae. What appear to be the 

 interbases are broad, flattened curved plates, narrowed distally, ter- 

 minating in two powerful, unequal spines. 



Habitat. — Colorado. Holotype^ male, Tennessee Pass, July 23, 1917 

 (J. M. Aldrich). 



r^/^e.— Male, Cat. No. 40330, U.S.N.M. 



EXPLANATION OF PLATE 



(Symbols: The venation used is the Comstock-Needham system, with the 

 cubital field as modified by Tillyard and the radial field as modified by Alex 

 ander. — ^A=Anal veins ; C= Costa ; Ctt= Cubitus ; ilf =Media ; i2= Radius ; 8c= 

 Subcosta. 



The terminology of the hypopygium is that of Cramton (1923). — a=aedeagus; 

 &= basistyle; eZ = dististyle ; 5'=gonapophysis ; *=9th tergite.) 



Fig. 1. Brithura nymphica; wing. 



2. Eriocera grahami; wing. 



3. Eriocera arrogans; wing. 



4. Limonia nitidiuscula ; male hypopygium. 



5. Dicranomyia penicillata; male hypopygium. 



6. LimnopMla (Ephelia) aldricM; outer dististyle. 



7. LimnopMla nigrofemorata ; styli. 



8. Tricpphona stenoptera; male hypopygium. 



o 



