140 



2. Pteeonarcvs eeticulata. 



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



Pieroiiaicvs reticulata, Pictet^ Hist. Nat. Near. Perl. 130, 2, pi. 6, 



f. 7, 8. 



Siberia., 



3. Pteeonarcys eegalis. 



Fusca ; caput., prothorax, inesotJiorax et metathorax linea coinmuni 

 longitudinali flava signata ; abdominis segmenta postice Jiava ; 

 alcE hyalincB fusco tinctcB ; pedes fusci, genubus concohribus. 



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

 xiii. 21. Pictet, Hist. Nat. Neur. Perl. 134, 4. Aim. 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 Rivers. Pre- 

 sented by Sir J. Richardson. 



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

 by G. Barnstou, Esq. 



A. North America. 



4. Pteronarcys biloba. 



Fusca ; caput., prothorax et mesothnrax concoloria ; metathorax 

 linea longiludinali Jiava ; abdominis segmentum 7um sub- 

 tus lobis duobus conicis auctum ; alee hyalincB fusco variegata ; 

 pedes fusci, genubus concoloribus. 



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

 Neur. Perl. 135, 5. 



a. Trenton Fall?. Presented by the Entomological Club. 



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



G. Barnston, Esq. 



c. North America. * 



5. PlERONARCYS CaLIFORNICA. 



Capite thoraceque saturate fuscis; fronte, cli/peo, labroque rnjis ; 

 oculis ocellisque nigris ; segmentis thoracis linea longitudinal/ 

 interrupta Jiava ; abdouiine atirantiaco lateribus fuscis ; setis 

 caudalibus basi Jiavis ; antennis pedibusque totis atris ; ali< 

 obscuris nigro venosis, sed absque macula stigmaticali. 



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



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



