REPORT OF THE STATE ENTOMOLOGIST I907 189 



was one (Ephemerella dorothea) that was only to be 

 obtained by rearing it from the nymph, it being very secretive as to 

 its adult habits. I collected chiefly by hand from the hatchery walls, 

 by trap lanterns at Old Forge pond and on Moose river, and by 

 sweeping nets along the banks of Beaver Meadow brook, and along 

 the Adirondack League Club road to Little Moose lake. Li a breed- 

 ing cage maintained in a hatchery trough by my window, I reared a 

 considerable number of May fly nymphs, verifying the breedings of 

 former years, and adding a few new life h'stcries, that will be given 

 in the following pages : 



Siphlurus alternatus. This species was common in trashy 

 places in the borders of the ponds. I found the nymphs abundant 

 in Bald Mountain pond. Adults were taken hovering at First lake 

 on June 24th in mid afternoon. They settled in hundreds on the 

 outside of the hatchery and coul 1 be taken constantly through June 

 and July. 



Blasturus cupidus. But few specimens of this elsewhere 

 common species were seen. One was taken on the hatchery the 

 first of July and several on piers about Old Forge pond in the 

 latter part of June. 



Leptophlebia mollis. This was another very common species. 

 The nymph lived in slow-flowing clear streams, perhaps in other 

 places as well, for I found the adults everywhere. A few at the 

 hatchery; swarms of them on the Mountain Lodge " carry "' opposite 

 Dog Island in First lake, where they were flying underneath a high 

 canopy of birch boughs, rising and falling in rapid succession 

 through a distance of 25 feet, scarcely descending within 50 feet 

 of the ground. I found them in Beaver Mea'low brook, both in the 

 meadow itself, and in the rocky part of the stream, at the fish ponds 

 where four of them emerged within my tent trap. Nymphs taken 

 from the stream at this place were reared in the hatchery on the 

 sixth of August. 



Callibaetis hageni. This species was common at the hatchery 

 inside as well as outside, and during the latter part of July and the 

 whole of August, subimagos could be collected in the hatchery win- 

 dows. Adults could be picked up from the piers about the border 

 of Old Forge pond. These specimens aD^eared to differ in no 

 respect whatever from others obtained from the type locality in 

 California. 



Baetis posticatus. This delicate little May fly was to be 

 found in the same situations with Leptophlebia. It was abundant 



