CAPNIA. 33 



3. C. minima! 



Perla minima Newp.! Proc. Linn. Soc. I, 388, 2. Trans. Linn. Soc. XX, 



450, 2. Walk.! Catal. 183, 19. 



Black, shining; antennae moniliform; prothorax narrower than 

 the head, subquadrate, sides straight, angles acute; feet blackish- 

 fuscous; abdomen black (setae with 13 articulations, Newp.); g 

 wings rudimental; 9 wings pale, veins black; penis J* very short; 

 abdomen having no dorsal tubercle before the apex of the penis. 



Length to tip of wings J 1 2^; 96 millim. Alar expanse, 7 

 millim. 



Hob. St. Martin's Falls, Albany River, Hudson's Bay ; April 

 (Barnston). 



I possess only the male ; the remainder of the description is 

 from Newport and Walker. 



4. C. vernalis! 



Capnia vernalis Newp. Proc. Linn. Soc. 388, 3. Trans. Linn. Soc. XX, 



451, 3. Walk. Catal. 176, 8. Nemoura tennis Walk.! Catal. 182, 13. 



Black, shining, sparingly pilose ; antennas moniliform ; protho- 

 rax narrower than the head, rounded, rugulose; feet, abdomen, and 

 setas blackish-fuscous; sets with somewhat near 20 articulations ; 

 wings pallid, veins fuscous; wings with the form and reticulation 

 of Nemoura (subgenus restricted); penis rather long; no dorsal 

 tubercle before the apex of the penis. 



Length to tip of wings 6 7 millim. Alar expanse 10 12 

 millim. 



Hdb. St. Martin's Falls, Albany River, Hudson's Bay (Barn- 

 ston). 



I possess a male and female from the British Museum ; they are 

 certainly N. tennis Walker, but I do not know whether the speci- 

 mens described in the same place and taken in New York, belong 

 here. Nor have I quoted here Newport's species G. vernalis, with- 

 out some doubt. But not finding his typical specimens in the 

 British Museum, I am rather inclined to believe that Mr. Walker 

 has erroneously united them to N. tenuis. N. tennis Pictet is very 

 different. 



f f No abdominal setae. 



* Second articulation of the tarsi equal to the others. 



