490 PROCEEDINGS OF THE ACADEMY OF • [June, 



0. pelidna Burm. 



General Range. — Southern New England, Ontario, Michigan 

 and Minnesota, south to Florida and the Gulf States, west to Colorado 

 and New Mexico; most abundant in the Austral zones, especially 

 near the coast, more or less local in the northern and central States. 



Local Distribution. — Rare or only occasionally frequent locally 

 in the Piedmont Plateau; common locally in the Pennsylvania 

 portion of the Middle District; abundant in all parts of the Coastal 

 Plain, including the beaches. 



Ecological Distribution.— Habitat preferences rather variable, 

 but typically a'humicolous xerophile. In the Piedmont Region it 

 is associated with 0. speciosa; in the Coastal Plain it usually occurs 

 on dry sands or sandy loams wherever there is at least a moderate 

 amount of plant cover in the form of grass or low herbage; less 

 frequently it occurs in open peat-bogs and meadows. 



Locality Records.— 



Piedmont Plateau. — Perkasie, Bucks Co., Pa., 2 out of 106 Orphu- 

 lellcB were of this species (Fox); Mt. Airy, Philadelphia Co., 19 out 

 of 108 of this species, the rest speciosa (Fox) ; Pink Hill, Delaware 

 Co. (Rehn, Fox) ; in my own collection 4 out of 49 Orphulellce were 

 of this species. 



Middle District. — Bartram's Garden, Elmwood, Philadelphia Co., 

 of 125 Orphtdellce 45 were pelidna (Fox); Essington, Chester Co., 

 14 pelidna out of a total of 26 Orphulellce (Fox). 



Newcastle, Del., frequent (Fox). 



Riverton, N. J. (Viereck); Washington Park (Fox), abundant; 

 Almonesson (Fox) ; Mantua (Fox) ; Laurel Springs (Fox) ; Medford 

 (Rehn); Jericho (Fox); Canton (Fox). 



Pine Barrens. — Taunton (Stone); Bear Swamp, Burlington Co. 

 (Rehn); Speedwell (Rehn); Clemonton (Rehn, Fox); Penbryn 

 (Fox); between Cedar Grove and Chatsworth (Rehn); Stafford's 

 Forge (Rehn); West Creek (Rehn); Atsion (Hebard); Winslow 

 (Fox); Rosedale (Rehn and Hebard); Parkdale (Rehn and Hebard); 

 Manumuskin (Fox) ; Belleplain (Fox) ; Mt. Pleasant (Fox) ; Formosa 

 Bog (Fox); head of Tuckahoe River (Fox). 



Coastal District. — Petersburg (Fox); Palermo (Fox); Seaville 

 (Fox); Ocean View (Fox); Goshen (Fox); Sea Isle City (Fox); 

 Seven-mile Beach (Fox); Anglesea (Fox); Cape May (Viereck, 

 Fox). 



Cape May Interior. — Sea Isle Junction (Fox) ; Ocean View Ceme- 

 tery (Fox); South Seaville (Fox); Dennisville (Fox); Clermont 

 (Fox); Swain (Fox); Rio Grande (Fox); Bennett (Fox). 



