852 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Nematopora iniuuta (Hall). 



Trematopora? (Trachypora?) minuta Hall, 28th Ann. Rep. New York State Mus. 



(doc. ed.), 1876, pi. 11, fig. 8. 

 Trematopora minuta Hall, 28th Ann. Rep. New York State Mus. (mus. ed.), 1879, 



p. 113, pi. 11, fig. 8; llth Ann. Rep. Indiana Geol. Nat. Hist., 1882, p. 234, 



pi. 10, fig. 8. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1201, fig. 

 Nematopora minuta Ulrich, Geol. Surv. Illinois, 8, 1890, p. 645. Bassler, Bull. 



U. S. Geol. Surv., 292, 1906, pp. 58, 59, pi. 18, fig. 10; pi. 21, figs. 8-11. 

 Niagaran: Waldron, Indiana (Waldron); Lockport, etc., New York; and Grimsby, 



Ontario (Rochester). 

 Plesiotypes.V&t. No. 35774, U.S.N.M. 



Nematopora ovalis Ulrich. 



Nematopora ovalis Ulrich, Jour. Cincinnati Soc. Nat. Hist., 12, 1890, p. 197, 



fig. 21. Ulrich, Geol. Minnesota, 3, 1893, p. 204, pi. 3, figs. 24, 25. Grabau 



and Shimer, N. A. Index Fossils, 1, 1907, p. 153, fig. 208a. Bassler, Bull. 



U. S. Nat. Mus., 77, 1911, pp. 156, 157, fig. 77. 

 Nematopora quadrata Ulrich, Geol. Surv. Illinois, 8, 1890, p. 644, pi. 29, figs. 



12-12c. Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, figs. 



124, 125 (p. 553). 

 Trenton: Cannon Falls, Minnesota (Prosser); Trenton Falls, New York; Montreal, 



Quebec. 



Middle Ordovician (Kuckers): Near Jewe, Esthonia, Russia. 

 Cotypes.Cat. Nos. 43686, 43385, U.S.N.M. 



NEMATOPORA QUADRATA Ulrich. See Nematopora ovalis. 



Nematopora raripora (Hall). 



Stictopora raripora Hall, Pal. New York, 2, 1852, p. 46, pi. 18, fig. 5a-c. 

 Ptilodictya? raripora Nicholson and Hinde, Canadian Jour., n. s., 14, 1874, p. 



142. Nicholson, Pal. Province Ontario, 1875, p. 45, fig. 39; figs. 4, 4a. 

 Upper Medinan (Cataract): Flamborough Head, Ontario. 

 Niagaran: Lockport, New York. 



Nematopora retrorsa Ulrich. 



Nematopora retrorsa Ulrich, Geol. Surv. Illinois, 8, 1890, p. 645, pi. 29, figs. 



9-9b. Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 44, pi. 1, fig. 5. 

 Upper Medinan (Girardeau): Alexander County, Illinois. 



NEMATOPORA STRIATOPORA Ulrich. See Thamniscus striatopora. 

 NEMATOPORA STRIGOSA Ulrich. See Glauconome strigosa. 



NEREIDAVUS Grinnell. Genotype: N. varians Grinnell. 



Nereidavus Grinnell, Amer. Jour. Sci., 3d ser., 14, ]877, p. 230. Miller, N. A. 

 Geol. Pal., 1889, p. 519. 



Nereidavus varians Grinnell. 



Nereidavus varians Grinnell, Amer. Jour. Sci., 3d ser., 14, 1877, p. 230, figs. 1, 2. 



Miller, N. A. Geol. Pal., 1889, p. 519, fig. 939. 

 Eunicites (Nereidavus) varians Hinde, Quart. Jour. Geol. Soc. London, 35, 1879, 



p. 375, pi. 18, figs. 2, 3, 5. 

 Eunicites varians Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 241, figs. 



1530b, c. 

 Eden and Maysville: Cincinnati, Ohio, and vicinity; Toronto, Ontario. 



