1921] NATURAL SCIENCES OF PHILADELPHIA. .J 



July, Gnophaela latipennis var. vermiculata became very plentiful, 

 flying by dozens in the air above the alders. The numerous shrubs, 

 most of which were in bloom at the time of my stay, attracted 

 many Coleoptera, chiefly Longicorns, Clerids and Mordellids; Hy- 

 menoptera, of which the parasitic forms were especially noticeable, 

 and many Diptera, of which by far the greatest number were Syr- 

 phidae. The Coleoptera were most plentiful during the first four 

 or five days of my stay, and dwindled in numbers very markedly 

 toward the end of July. These meadows lie at altitudes of 4500 

 feet to 5500 feet. 



The dry meadow occupies drier, rocky and more exposed situa- 

 tions usually at altitudes around 5000 feet; good examples of such 

 meadows where extensive collections were made are found at Glacier 

 Park Station, the lower end of Two Medicine Lake, the north end 

 of McDermott Lake, and on the gentle slopes near the mouth of 

 Canyon Creek. These meadows are veritable flower gardens, ex- 

 hibiting an unsurpassed richness of flora. At the end of July, the 

 blooming period was about over at Glacier Park Station, and the 

 meadow was becoming dry and brown, with a corresponding dwind- 

 ling in species of Lepidoptera. These meadows are by far the 

 richest of any of the localities where collections were made in point 

 of species and numbers of individuals. Microlepidoptera were most 

 active early in the morning, while the dew was still on the leaves, 

 and in the evening at dusk. In most instances specimens taken in 

 the evening were of different species from those flying in the morn- 

 ing. Coleophora, Elachistidae, some Incurvariidae, many species of 

 Gelechiidae were the most characteristic groups present among the 

 Tineina; Tortricids were represented by a great number of species, 

 many very numerous in individuals, notably Cnephasia argentana 

 Clerck w^hich flew in swarms; Pyralids, among which perhaps the 

 most common was Pyla sp., and many Crambids were present. 

 Butterflies flew plentifully dm*ing the middle of the day; these 

 were fairly numerous at all places dmdng my stay in the park, but 

 became especially abundant during the last five or six days of July; 

 swarms of them congregated on every moist stream bank and on 

 the trails. The flowering shrubs, scattered through the meadows 

 and fringing the forests, attracted as in the moist meadows, many 

 Coleoptera, Hymenoptera and Diptera. 



The subalpine meadows occurred at the higher altitudes, 6000 

 feet or over, depending upon slope exposure, topographic conditions 

 and persistence of snow. These meadows produced a disappoint- 



