674 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



IsochUlna Ottawa (Jones). 



Leperditia (iBocliilina) Ottawa Jonee, Ann. Mag. Nat. Hist., 3d eer., 1, 1868, p. 



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



Isochilina Ottawa Jonee, Ann. Mag. Xat. Iliet., 5th Ber., 14, 1884, p. 345; Cont. 



Micro-ral., Geol. Stirv. Canada, pt. 3. 1891, p. (36. 

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

 Canadian (Beekmantown): Grenville, Quebec. 



IsocHUJNA OTTAWA var. Joncs. See Isochilina gregaria. 



Isochujna OTTAWA var. intermedia Jones. See Isochilina gregaria. 



IsochUlna panolensis Foerste. 



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



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

 Clinton (Waco): PanoJ^i and near Ir\dne, Kentucky. 



IsochUlna safTordl Uhich. 



Isochilina saffordi I'lrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1891, p. 178, pi. 



11, figs. lOa-d. 

 Trenton (Catheye): Nashville, Tennessee. 

 Ilolotype.—C&t. No. 41288, U.S.X.M. 



Isochhina scofieldi Miller. See Macronotella ecofieldi. 



IsochUlna seelyl (AMiitfield). 



Primitia Seelyi WTiitfield. Bull. Amer. Mus. Xat. Hist., 2, 1889, p. 60, pi. 13, 



figs. 6. 7. — Lesley. Geol. Surv. Penns^'lvania, 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. 



IsochUlna? 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. 1666i-k. 



Trenton (Perrjville): Penyville. etc., Kentucky. 



Holotype.—C&t. No. 41294.U.S.N.M. 



IsochUlna whltcavcsl Jones. 



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



p. OS. pi. 10, fig?. 13a, b. 

 Trenton: Lorette Falls, Quebec. 



IsoGRAPTUs GiBBERULUs Mobcrg. See Didymograptus (Isograptus) caduceus. 



ISOTELOIDES Raymond. Genotype: I. whitfieldi Ra>-mond. 



li^oteloides 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 eer.. sec. 4. 1912, p. 115. 



Isoteloides angusticaudus (Raymond). 



Isotelus angusficaudum RajTuond. Ann. Carnegie Mus., 3, 1905, p. 345, pi. 13, 



figs. 3, 4. 

 Isoteloideti aagusticaudus Raymond, 7th Rep. Vermont State Geo!., 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. IS, fig. 1; pi. 19, fig. 8.— Perkins, Rep. 



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

 Chaz>-an (Cmwn Point. V.nlcour): Valcour Island and Chazy, New York; Isle 



La Motte, Vermont. 



