140 PERLIDES. 



2. PTERONARCYS RETICULATA. 



Perla reticulata, Burm. Handb. Ent. ii. 879. 



Pieronarcys reticulata, Pictet, Hist. Nat. Neur. Perl. 130, 2, pi. 6, 



f. 7, 8. 



Siberia. 



3. PTERONARCYS REGALIS. 



Fusca ; caput, prothorax, mesothorax et metathorax linea communi 

 longitudinali flava signata ; abdominis segmenta postice flava ; 

 alee hyalincB fusco tinctce ; pedes fusci, genubus concoloribus. 



Pteronarcys regalis, Newm. Ent. Mag. v. 176. Ann. Nat. Hist. 

 xiii. 21. Pictet, Hist. Nat. Neur. Perl. 134, 4. Ann. Sci. 

 Nat. i. 183. Froriep, N. Notizen, xxx. 179. 



a, b. Canada. Presented by the Entomological Club. 



c e. District watered by the Mackenzie and Slave Eivers. Pre- 

 sented by Sir J. Kichardson. 



/, g. St. Martin's Falls, Albany River, Hudson's Bay. Presented 

 by G. Barnston, Esq. 



h. North America. 



4. PTERONARCYS BILOBA. 



Fusca ; caput, prothorax et mesothorax concoloria ; metathorax 

 linea longitudinali flava ; abdominis segmentum 7um sub- 

 tus lobisduobus conicis auctum ; alee hyalince fusco variegata; 

 pedesfusci, genubus concoloribus. 



Pteronarcys biloba, Newm. Ent. Mag. v. 176, 2. Pictet, Hist. Nat. 

 Neur. Perl. 135, 5. 



a. Trenton Falls. Presented by the Entomological Club. 



b. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 



G. Barnston, Esq. 



c. North America. 



5. PIERONARCYS CALIFORNICA. 



Capite thoraceque saturate fuscis ; fronte, clypeo, labroque rujis ; 

 oculis ocellisque nigris ; segmentis thoracis linea longitudinali 

 interrupta flava ; abdomine aurantiaco lateribus fuscis ; setis 

 caudalibus basi flavis ; antennis pedibusque totis atris ; alls 

 obscuris nigro venosis, sed absque macula stigmaticali. 



Pteronarcys Californicus, Newport, Proc. Linn. Soc. (1848) i. 388. 

 a. California. From M. Hartweg's collection. 



