THE CANADIAN ENTOMOLOGIST. 123 



NOTES AND DESCRIPTIONS OF PERLID^E. 



BY NATHAN BANKS, EAST END, VA . 



Iii going through the accessions to my collection, I have found 

 several new species and new localities for some known forms. Most 

 of these are included in this paper. 



Perla capitata, Pictet. 



P. capitata, Pict.: Hist. Nat. des Neuropt., p. 214, 1841. 



P. tristis, Hagen : Syn. Neur., N. Amer., p. 22, 1861. 



On comparing specimens of P. tristis with Pictet's figure and 

 description, I find that these species are identical, a fact which I had 

 suspected before. 



Perla fumosa, n. sp. 



Head orange yellow, a large black spot covering the lateral ocelli 

 and extending forward to the clypeus, a brown spot above each eye ; 

 basal joint of antennas dark brown, rest pale yellowish brown ; pronotum 

 wholly dark brown ; thorax yellow above, with brown spots on mesothorax; 

 abdomen pale yellowish brown ; venter yellowish, as is also the under 

 side of the thorax ; legs dark brown, but little paler beneath ; setce yellow 

 on base, brown beyond ; wings slightly fumose, veins brown. Pronotum 

 very much narrower behind than in front, its sides straight, angles quite 

 sharp. In the male there is a median brown spot on the last ventral 

 segment. 



Length, q* , 16 mm.; $ , 22 mm. 



One pair taken together near Washington, D. C, nth June, 1899. 

 Readily separated from P. capitata by the yellow under side of thorax, 

 etc. 

 Perlinella sobria, Hagen. 



Perla sobria, Hag.; Bull. Geol. Surv. Terr., 1875, p. 577. 



One specimen sent by Prof. Cockerel], collected at Las Vegas, New 

 Mexico, June, 1901. It agrees very nicely with Hagen's description, and 

 can be easily recognized by the three pale spots in a row between the eyes. 



Perlinella frontalis, n. sp. 



Head with a large pale yellowish spot each side above the eye and 

 reaching to the posterior margin, almost touching each other on the 

 median line, which is black ; the posterior angles brown ; a large blackish 

 spot in the middle of the head, pointed behind, in the middle covering 

 the lateral ocelli, and tapering forward to the clypeus, a yellow spot 



