674 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Isochlliua Ottawa (Jones). 



Leperditia (Isochilina) Ottawa Jones, Ann. Mag. Nat. Hist., 3d ser., 1, 1858, p. 



243, pi. 10, fig. 1; Geol. Surv. Canada, dec. 3, 1858, p. 97, pi. 11, fig. 14. 

 Isochilina Ottawa Jones, Ann. Mag. Nat. Hist., 5th ser., 14, 1884, p. 345; Cont. 



Micro-Pal., Geol. Surv. Canada, pt. 3, 1891, p. 66. 

 Leperditia Ottawa Dwight, Vassar Bros. Inst., 5, 1890, p. 76. 

 Canadian (Beekmantown): Grenville, Quebec. 



ISOCHILINA OTTAWA var. Jones. See Isochilina gregaria. 

 ISOCHILINA OTTAWA var. INTERMEDIA Jones. See Isochilina gregaria. 



Isochilina panolensis Foerste. 



Isochilina panolensis Foerste, Bull. Kentucky Geol. Surv., 7, 1906, p. 328; Jour. 



Cincinnati Soc. Nat. Hist., 21, 1909, p. 30, pi. 1, fig. 1. 

 Clinton (Waco) : Panola and near Irvine, Kentucky. 



Isochilina saffordi Ulrich. 



Isochilina saffordi Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1891, p. 178, pi. 



11, figs. lOa-d. 



Trenton (Catheys) : Nashville, Tennessee. 

 Holotype. Cat. No. 41288, U.S.N.M. 



ISOCHILINA SCOFIELDI Miller. See Macronotella scofieldi. 



Isochilina seelyi (Whitfield). 



Primitia Seelyi Whitfield, Bull. Amer. Mus. Nat. Hist., 2, 1889, p. 60, pi. 13, 



figs. 6, 7. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 744, figs. 

 Isochilina seelyi Jones, Quart. Jour. Geol. Soc. London, 46, 1890, p. 22, pi. 1, 



fig. 7. Seely, Vermont State Geol. Rep., 7, 1910, pi. 61, fig. 17. 

 Canadian (Beekmantown): Shoreham, Vermont; Providence Island, Lake 



Champlain. 



Isochilina? subnodosa Ulrich. 



Isochilina subnodosa Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1891, p. 177, 

 pi. 11, figs. 7a-c. Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 282, 

 fig. 2. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 342, figs. 1656i-k. 



Trenton (Perryville): Perry ville, etc., Kentucky. 



Holotype. Cat. No. 41294, U.S.N.M. 



Isochilina whiteavesi Jones. 



Isochilina whiteavesii Jones, Cont. Micro-Pal., Geol. Surv. Canada, pt. 3, 1891, 



p. 68, pi. 10, figs. 13a, b. 

 Trenton: Lorette Falls, Quebec. 



ISOGRAPTUS GIBBERULUS Moberg. See Didymograptus (Isograptus) caduceus. 



ISOTELOIDES Raymond. Genotype: I. whitfieldi Raymond. 



Isoteloides Raymond, Ann. Carnegie Mus., 7, No. 1, 1910, pp. 36, 67; 7th Rep. 

 Vermont State Geol., 1910, p. 223; Trans, and Proc. Roy. Soc. Canada, 5, 

 3d ser., sec. 4, 1912, p. 115. 



Isoteloides angusticaudus (Raymond). 



Isotelus angusticaudum Raymond, Ann. Carnegie Mus., 3, 1905, p. 345, pi. 13, 



figs. 3, 4. 

 Isoteloides angusticaudus Raymond, 7th Rep. Vermont State Geol., 1910, p. 223, 



pi. 35, figs. 3, 4; pi. 37, fig. 7; pi. 38, fig. 1; pi. 39, fig. 8; Ann. Carnegie 



Mus., 7, 1910, p. 68, pi. 17, fig. 7; pi. 18, fig. 1; pi. 19, fig. 8. Perkins, Rep. 



Vermont State Geol., 8th ser., 1912, pi. 18, fig. 1. 

 Chazyan (Crown Point, Valcour): Valcour Island and Chazy, New York; Isle 



La Motte, Vermont. 



