FROM NEW YORK, NEW JERSEY, AND GEORGIA. 153 



■ Genus Amphitrema, Archer. 



Three species belonging to this genus are recorded from Lakehurst, N.J. 

 None are numerous and all are of medium size. They have not been 

 recorded previously from America. 



Amthitrema flavum (Archei'), Penard. 



Ditremaflavum, Archer. 



Length .50-77 yu, ; breadth 37-42 yu, ; thickness 15-20 /x. 



A. STBNOSTOMA, Nilsslin. 



Length 80 /x; breadth 60 ^ ; thickness 35 yu,. 



A. Wrightianum, Archer. 



Length 50-63 yu. ; breadth 30-56 yu,; thickness 15-30 ^. 



HELIOZOA. 



The four species recorded are not uncommon and are generally 

 distributed. 



Literature. 



1. Baenarp, W. S., ill Amer. M. Micr. Journ. i. 1879. (New species of Centrojn/.ris and 



Uufflypha.) 



2. Beardsley^ a. E., in Trans. Amer. Micr. Soc. xxii. 1902. (Protozoa of Colorado.) 



3. Brown, J. M., in Journ. Linn. Soc, Zool. xxx. (1910) 360, and xxxii. (1911) 77. (New 



and little-known Britisli Hhizopods.) 



4. Calkins, G. N., in Ann. N. York Acad. Sci. xi. (1898). (Protozoan nuclei.) 



5. in Amer. Naturalist, xxxv. (1901). (Protozoa of Van Cortlandt Park.) 



6. in Arcliiv fiir Protist. v. (1905). (Life-historj^ oi Amceba proteus.) 



7. The Protozoa (1901). Protozoology (1909). 



8. Calvin, S., in Amer. Nat. xxiv. (1890). {Actinosphenum eichoniL) 



9. Carter, Kev. F. B., in Amer. M. Micr. Journ. ix. i. (1888). (Outline of classification 



and identification of Rhizopods.) 



10. Cash, J., and J. Hopkinson. — The British Freshwater Rhizopoda. Ray Soc, 1905 



and 1908 (3rd vol. not yet published). 



11. Certes, a. — Mission Scientifique du Cap Horn, tome vi. (1889). 



12 CoCKERELL, T. D. A.— Colorado Univ. Studies, iv. (1907j, vi. (1909), viii. (1911). 

 (Protozoa of Colorado.) 



13. Cox, J. D., in Amer. M. Micr. Journ. ii. (1881). {Actinophrys sol.) 



14. Conn, H. W.— Protozoa of the Freshwaters of Connecticut (1905). (Includes 27 spp. 



of Rhizopoda and Heliozoa, each sp. illustrated.) 



15. Crawley, H., in Amer. Nat. xxxiv. (1900). {Vampyrella.) 



16. Crevier, Dr. J. A., in Le J^at. Canadien (1875). (List of 15 spp. of Canadian Amochce ; 



one new sp.) 



17. Cushman, J. A., in Amer. Nat. xl. ^1906). (List of Rhizopoda, 21 spp., and Heliozoa 



from Nantucket Isl., Mass. ; with dimensions.) 



