354 BULLETIN 02, UNITED STATES NATIONAL MUSEUM. 



Cyrtoceras macrostomum Hall. 



Cyrtoceras marginalis Conrad (not Phillips, 1841), Proc. Acad. Nat. Sci. Phila- 

 delphia, 1, 1843, p. 334.— Emmons, Amer. Geology, 1, pt. 2, 1855, p. 147, fig. 

 30. 



Cyrtoceras macrostomum Hall, Pal. New York, 1, 1847, p. 194, pi. 42, figs, 

 la-c, 3a-b. — Clarke and Rnedemann, Bull. New York State Mus., 65, 1903, 

 p. 584. 



Black River: Mineral Point, Wisconsin (Platteville); Middleville, New York; 

 Carlisle, Pennsylvania. 



Cyrtoceras magister Miller. 



Cyrtoceras obscura Miller (not Barrande), Cincinnati Quart. Jour. Sci., 2, 1875, 



p. 132, text fig. 17. 

 Cyrtoceras magister Miller, Cincinnati Quart. Jour. Sci., 2, 1875, j). 284. — James, 

 J. F., Jour. Cincinnati Soc. Nat. Hist., 8, 188G, p. 246.— Miller, N. A. Geol. 

 Pal., 1889, p. 434, fig. 729. 

 Eden (Southgate): Cincinnati, Ohio. 



Cyrtoceras niaiiltobeuse Whiteaves. 



Cyrtoceras Manitobense \\liiteaves. Trans. Royal Soc. Canada, 7, sec. 4, 1890, 

 p. 80, pi. 13, figs. 3-5; pi. 15, fig. 4; Pal. Foss., Geol. Surv. Canada, 3, pt. 3, 

 1897, p. 223.— Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 170. 



Oncoceras manitobense Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 799. 



Black River or Richmond: Lake Winnipeg, Manitoba; Baffin Land. 



Cyrtoceras marginalis Conrad. See Cyrtoceras macrostomiim. 



Cyrtoceras markoei Castelnau. Not recognized. 



Cyrtoceras Markoei Castelnau, Essai Syst. Sil. rAmeri(iue Septent., 1843, p. 30, 



pi. 9, fig. 3. 

 Ordovician: Montmorency River, Canada. 



Cyrtoceras massiense Safford. 



Cyrtoceras Massiense Safford, Geol. Tennessee, 18G9, p. 290, pi. 4 (G 3), fig. 4a, b. 

 Trenton: Nashville, Tennessee. 



Cyrtoceras mccoyi Billings. 



Cyrtoceras McCoyi Billings, Canadian Nat. Geol., 4, 1859, p. 467. 

 Chazyan: Mingan Islands, Quebec. 



Cyrtoceras Metellus Billings. See Maelonoceras mctellus. 



Cyrtoceras microscopicum Dwight. 



Cyrtoceras microscoi)icum Dwight, Amer. Jour. Sci. Arts (3), 27, 1884, p. 256, pi. 7, 



fig. 11. 

 Canadian (Beekmantown) : Rochdale, New York. 



Cyrtoceras Minneapolis Clarke. See Cyrtorizoceras minneapolis. 



Cyrtoceras missisquoi Billings. 



Orthoceras Missisquoi Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 314, 



fig. 303. 

 CjTtoceras missisquoi Miller, N. A. Geol. Pal., 1889, p. 435 (gen. ref.). 

 Canadian (Beekmantown): Phillipsburg, Quebec. 



Cyrtoceras multicameratum Hall. 



Cyrtoceras multicameratum Hall, Pal. New York, 1, 1847, p. ]95, pi. 42, fig. 4.— 

 Emmons, Amer. Geology, 1. pt. 2, 1855, p. 147. 



Trenton: Middleville, New York. 



