AQUATIC INSECTS IN THE ADIRONDACKS 573 



Limnophilidae 



Limnophilus ornatus Banks July i8 



Goniotaulius disp e c tus Walk. ? (pi. 30, fig. 2) Augusts 



Goniotaulius pudicus Hag. July 18 



Halesus indistinctus Hag. (pi. 30, fig.3) August 14 



Halesus h ostis Hag. (pi. 31, fig. i) July 30 



Stenophylax scabripennis Ramb. July 22 



An undetermined Limnophilid. August 20 



Leptoceridae 



Molanna cinerea Hag. (reared) (pi. 13, fig. 1-6) July 6 to August 



20 

 Triaenodes ignita Walk. (pi. 34, fig. 2) July 16, 18 

 Leptocerus species ? August 4 



Leptocerus species ? {near flaveolata) June 29, July 7 

 Leptocerus resurgens Walk. (pi. 34, fig. i) July 2, August 8 

 Mystacides nigra Linn. August i 



Hydropsychidae 



Hydropsyche scalaris Hag. (pi. 34, fig. 3) July 3, August 12 

 Hydropsyche species? near phalerata (reared) (pi. 15, fig. 1-4) 



July 5, August 14 

 Polycentropus lucidus Hag ? (reared) (pi. 13, fig. 7-1 1) July 7, 



August 19 



Rhyacophilidae 



Chimarrha aterrima Walk. July 15, 19 

 Chimarrha species? July 18 



Order DIPTERA 



Of this immense group a considerable part is aquatic. That part is 

 abundantly represented at Saranac Inn, but did not receive a fair 

 measure of attention. Dipterous larvae, comparatively speaking, are 

 somewhat better known than are the immature stages of the " lower " 

 orders to which we gave our principal attention. Only those Diptera 

 which in their immature stages were most accessible, or seemed likely to 

 yield new or interesting forms, were studied. Below is an annotated 

 list of the groups which came more or less under observation. 



Tipulidae — Crane flies. Abundant in individuals, representing a con- 

 siderable number of species. No attempt was made to determine 

 the i^^N specimens collected, save the giant Tipula abdominalis 

 Say, whose larva is described below. A small species with beautifully 

 spotted wings was bred from a floating pupa, but the single, imperfect, 

 alcoholic specimen is insuflicient for description. During the month of 



