130 ANNALS NEW YORK ACADEMY OF SCIENCES 



North American Jurassic. U. S. Geol. Surv., Bull. No. 29, p. 21, pi. 4, 

 figs. 4-6, 7, 1886. 



Valvata scabrida Meek and Hayden, Pliila. Acad. Nat. Sci., Proc. for 

 Oct. I860, p. 418, 1861. 



Viviparus gilli Meek and Hayden, Paleontology of the Upper Missouri. 

 Smiths. Contr. Knowledge, vol. xiv, no. 4, p. 115, pi. 5, figs. 3a, 3b, 1865. 



Lioplacodes veternus Meek and Hayden, Phila. Acad. Nat. Sci., Proc. 

 for Dec. 1861, p. 444 [1862?]. 



Neritina nelrascensis Meek and Hayden, Phila. Acad. Nat. Sci., Proc. 

 for Dec. 1861, p. 444 [1862?]. 



Valvata leei Logan, The Stratigraphy and Invertebrate Faunas of the 

 Jurassic Formation in the Freezeout Hills of Wyoming. Kans. Univ. 

 Quart, vol. ix, p. 133, pi. 31, figs. 1-3, 1900. 



OSTRACODA 



The following ostracods are reported by White, identified by T. Kupert 

 Jones : 



Metacypris forbesii Jones. 



Metacypris f Bears a distant resemblance to "Cypris f conculcata" 

 Jones. 



Darwinula leguminella E. Forbes. 



Cypris purhecTcensis ? Forbes sp. 



Two undetermined species of Cypris. 



ARUNDEL FORMS 



The following species are reported by W. B. Clark from the Arundel 

 formation of Maryland: 



Bythinia arundelensis Clark, [Systematic Paleontology], "Mollusca." 

 Md. Geol. Surv., vol. Low. Cret., p. 211, pi. 21, fig. 6, 1911. 



Viviparus marylandicus Clark, [Systematic Paleontology], "MoUusca." 

 Md. Geol. Surv., voL Low. Cret., p. 212, pi. 21, figs. 1-3, 1911. 



Viviparus arlingtonensis Clark, [Systematic Paleontology], "Mollusea.'' 

 Md. Geol. Surv., vol. Low. Cret., p. 212, pi. 21, figs. 4, 5, 1911. 



' Cyrena marylandica Clark, [Systematic Paleontology], "MoUusca." 

 Md. Geol. Surv., vol. Low. Cret., p. 213, pi. 21, figs. 8, 9, 1911. 



The only reference of importance in connection with the invertebrate 

 fauna of the Morrison formation not included in the above list is : White, 

 C. A. Eeview of the Non-Marine Fossil Mollusca of North America. 

 U. S. Geol. Surv., 3rd Ann. Eep., pp. 405-550, 32 pis., 1883. 



The invertebrate fauna is exclusively fresh-water in character. 



