228 



Tricyphona inconstans (O. S.). Swamp, August 29-September 

 10. 



T. autumnalis Alex. Swamps, very common, August 29- 

 September 10. 



Amalopina flaveola (O. S.). Very common in the swamps 

 and bogs, August 26-September 10. 



Rhaphidolabis (Rhaphidolabis) tenuipes 0. S. Swamp, August 

 26-September 10. 



R. (R.) rubescens Alex. Swamps, September 8-10; Gorge, 

 September 10-12. 



R. (R.) cayuga Alex. Swale, August 30-September 11. 



Cladura (Neocladura) delicatula Alex. The commonest species 

 in the gorge, September 10-12. 



Gonomyia (Gonomyia) bidentata Alex. One of the commonest 

 and most characteristic species in the swamps, August 29-Sep- 

 tember 10; Bogs; Gorge, September 10-12. 



Erioptera (Empeda) stigmatica (0. S.). Swamp, August 29. 



Molophilus pubipennis (0. S.). Swamps, August 26-Septem- 

 ber 10; Swale, September 11. Some of the males are unusually 

 dark in color. 



M. soror, sp. nov. The occurrence of this species is discussed 

 under the specific diagnosis (p. 231); Swale, September 11. 



Ormosia nubila (O. S.) . Lake shores, September 4; on Western 

 Mountain to 600 feet, September 8. 



O. luteola Dietz. Swamps, September 1-4; Bogs, August 28- 

 September 8. 



O. pygmaea (Alex.). Bogs, September 4-10; Swamp, Septem- 

 ber 1. 



O. deviata Dietz. Swamp, September 1; Bogs, September 4; 

 Swale", September 11. 



O. rubella (O. S.). Swamp, August 29-September 10; margins 

 of bogs and along trails, September 4-10. 



O. nimbipennis Alex. The commonest Ormosia on the island 

 at this season, occurring in swamps, bogs, and along trails, 

 August 25-September 12; found in small dancing swarms beneath 

 the evergreens; ascends Western Mountain to 600 feet. 



O. monticola (O. S.). Swamps and bogs, August 26-Septem- 

 ber 10. 



O. megacera Alex. Swamp, one d\ September 1. 



Oropeza sp. One 9 not specifically determined; trail, August 

 31. 



