422 NEW YORK STATE MUSEUM 



2608 -^Ap TYPE Hall. Paleontology of New York. 1883. v - 5r 



pt i, plates and explanations, pi. 21, fig. 28. 



Hall. Paleontology of New York. 1884. v. 5, pt i, 

 pi. 21, fig. 28. 



Chemung beds Conewango N. Y. 



C. Van Deloo, coll. 1863 



Leptodesma spinigerum Conrad (sp.) 



2609 zzf-Z- HYPOTYPE Avicul a spinigera Hall. Journal of the 



Academy of natural sciences of Philadelphia. 1842. 8:237, 

 Leptodesma spinigerum Hall. Paleontology 



of New York. 1884. v. 5, pt i,~pl. 89, fig. i. 



Chemung beds Along Chemung river above Elmira N. Y. 



A. Sherwood, coll. 1871 

 On slab with type of L. agassizi, Pal. N. Y. v. 5, pt l r 



pi. 89, fig. 17. 



Leptodesma stevensi Hall (emend.) 



2610 2.2JL TYPE Leptodesma stephani Hall. Paleontology 



of New York. 1884. v. 5, pt i, p. 194, pi. 89, fig. 20. 

 Upper Chemung beds Bradford Pa. 



R. P. Stevens, donor 



2611 ^-^ TYPE Hall. Paleontology of New York. 1884. v. 5,pti, 



pi. 89, fig. 21. 



Upper Chemung beds Bradford Pa. 



R. P. Stevens, donor 



2612 ^^ TYPE Hall. Paleontology of New York. 1884. v. 5, 



pt i, pi. 89, fig. 22. 



Upper Chemung beds Bradford Pa. 



R. P. Stevens, donor 



Leptodesma truncatum Hall 



2613 -s^- 5 - TYPE Leptodesma truncatum Hall. Paleon- 



tology of New York. 1884, v. 5, pt i, p. 211, pi. 90, 

 fig. 24. 



Chemung beds Mansfield, Tioga co. Pa. 



A. Sherwood, coll. 1871 



2614 ^Ap TYPE Hall. Paleontology of New York. 1884. v. 5, 



pt i, pi. 90, fig. 25. 



Chemung beds Mansfield Pa. 



A. Sherwood, coll. 1871 



