7l8 NEW YORK STATE MUSEUM 



Isotelus gigas De Kay t 



4510 Jfi PLASTOTYPE Isotelus gigas De Kay. Annals of 



the New York lyceum of natural history. 1824. 1:124, 

 pi. 13, fig. i. 



Trenton limestone Trenton Falls, Oneida co. N. Y. 



Albany Institute, donor 



4511 f 4 - 1 HYPOTYPE: HYPOPLASTOTYPE Clarke. Geological survey 



of Minnesota. 1897. v. 3, pt 2 of the final report; 

 Paleontology, p. 706, fig. 8. 



Lorraine sandy shales Drift, central New York 



Isotelus gigas see Isotelus jacobus 



Isotelus jacobus Clarke 



4512 IjL f- 2- TYPE Isotelus gigas (De Kay) Hall. Paleontology 



of New York. 1847. 1:231, pi. 61, fig. 3g. 



Isotelus jacobus Clarke. Geology of Minnesota. 

 1897. v. 3, pt 2 of the final report; Paleontology, p. 706. 



Trenton limestone Crown Point, Essex co. N. Y. 



Albany Institute, donor 



Isotelus cf. maximus Locke 



45 1 3 IJ T-- HYPOTYPE Isotelus cf. maximus Locke. New York 



state museum bulletin 49. 1901. p. 59, pi. 4, fig. i. 

 Trenton conglomerate Rysedorph hill, N. Y. 



R. Ruedemann, coll. 1900 

 On slab with type of problematic crustacean, pi. 4, fig. 22. 



Isotelus obtusus Hall (sp.) 



4514 -i-2-|4A TYPE Asaphus? obtusus Hall. Paleontology of 



New York. 1847. I:2 4> pi- 4 u i s > n g- 1 4- 



Chazy limestone Clinton county, N. Y. 



LEPERDITIA Rouault 



Leperditia (Isochilina) cylindrica see 

 Bythocypris cylindrica 



Leperditia fabulites Conrad sp. 



45 1 5 1 3 i 9 HYPOTYPE Cytherina fabulites Conrad. Proceed- 



ings of the Academy of natural sciences of Philadelphia. 

 1843. ^332. 



Leperditia fabulites Ruedemann. New York 

 state museum bulletin 49. 1901. pi. 5, fig. 19, 20. 



Trenton conglomerate Rysedorph hill, N. Y. 



R. Ruedemann, coll. 1900 

 \ 



