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; ? wings pale, veins black; penis £ very short; 

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



Length to tip of wings J* 2-J; 9 6 millim. Alar expanse, 7 

 millim. 



Hab. 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 tenuis Walk.! Catal. 182, 13. 



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

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

 setae blackish-fuscous ; setae 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. 



Hab. 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. tenuis 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, JV. tenuis Pictet is very 

 different. 



f f No abdominal setae. 



* Second articulation of the tarsi equal to the others. 

 3 



