PLATE XLV. 



Pigs. 1-3.— HETEROPHRYS 1 



Fig. 1. Individual from spkagnous swamp, Broad Mountain, Pennsylvania. 500 diameters. 

 Fig. 2. Individual, from Uinta Mountains, Wyoming, July, 1877. 1,000 diameters. 

 Fig. 3. Individual, associated with the last. 500 diameters. 



Fig. 4.— HETEROPHRYS ? 



From sphagnuni-water, Vineland, N. J. , August, 1876. 400 diameters. 



Figs. 5, 6.— HETEROPHRYS ? 



Successive views of the same individual. Uinta Mountains, Wyoming, August, 1877. 1,000 

 diameters. 



Figs. 7, 8.— DIPLOPHRYS ARCHERI? 



Two views of the same specimen. Swamp-water, Broad Mountain, Pennsylvania, September, 

 1876. 500 diameters. 



FiG.9.— HYALOLAMPE FENESTEATA. 



From sphagnum, Absecom, N. J., June, 1877. 500 diameters. 



Figs. 10-1C— VAMPYRELLA LATERITIA. 



Figs. 10, 11. Two views of the same individual ; the former as first observed, the latter as seen 

 two hours subsequently. Fort Bridger, Wyoming, August, 1877. 500 diameters. 



Fig. 12. Individual, from Absecom pond, New Jersey, September, 1875. 800 diameters. 



Fig. 13. Individual, found with that of figs. 10, 11. 500 diameters. 



Fig. 14. Individual, from Fort Bridger, Wyoming, July, 1877. 500 diameters. 



Fig. 15. Individual, containing bright green algse. Spring on Darby Creek, Delaware County, 

 Pennsylvania, April, 1875. 500 diameters. 



Fig. 16. Individual, from bog-water, Longacoming, N. J., October, 1874. 800 diameters. 



Figs. 17, 18.— HYALODISCUS RUBICUNDUS ? 



Fig. 17. Individual, from ooze of Cooper's Creek, Camden, N. J., May, 1874. 600 diameters. 

 Fig. 18. Individual found with the preceding. 1,000 diameters. 



