BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 53 



Aparchites arrectus Ulrich. 



Aparchites arrectus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 646, pi. 43, figg. 



35, 36. 



Black River (Decorah): St. Paul, Minnesota, 

 Holotype Cat. No. 41836, U.S.N.M. 



Aparchites billings! (Jones). 



Leperditia Billingsi Jones, Ann. Mag. Nat. Hist., 5th ser., 8, 1881, p. 345, pi. 20, 



fig. 9. 

 Aparchites billingsii Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 3, 1897, 



p. 231. 

 Silurian or Devonian: Lake Winnepegosis, Canada. 



Aparchites chatfleldensis Ulrich. 



Aparchites chatfieldensis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 646, pi. 43, 



figs. 37, 38. 



Black River (Decorah): Chatfield, Minnesota. 

 Holotype. Cat. No. 41829 U.S.N.M. 



Aparchites concinnus (Jones). 



Cytheropsis concinna Jones, Ann. Mag. Nat. Hist., 3d ser., 1,1858, p. 249, pi. 10, 



figs. 3, 4; Geol. Surv. Canada, dec. 3, 1858, p. 99. 



Primitia concinna Jones and Holl, Ann. Mag. Nat. Hist., 3d ser., 16, 1865, p. 424. 

 Aparchites concinnus Jones, Cont. Micro-Pal., Geol. Surv. Canada, pt. 3, 1891, 



p. 99. 

 Black River (Leray): Pauquettes Rapids, Allumette Island, Ottawa River, 



Canada. 



Aparchites ellipticus Ulrich. 



Aparchites ellipticus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 644, pi. 43, figs. 



15-17. 



Black River (Decorah): Minneapolis, Minnesota. 

 Cotypes Cat. No. 41832 U.S.N.M. 



Aparchites flmbriatus (Ulrich). 



Leperditia fimbriata Ulrich, Amer. Geol., 10, 1892, p. 268, pi. 9, figs. 34-36. 

 Aparchites fimbriatus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 645, pi. 45, figs. 

 10--12. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 343, fig. 1657b. 

 Richmond (Maquoketa): Spring Valley, Minnesota. 

 Holotype. Cat. No. 41834, U.S.N.M. 



Aparchites gordoni Ulrich and Bassler. 



Aparchites gordoni Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 1913, 



p. 515, pi. 95, figs. 1-3. 



Helderbergian (Keyser): Cumberland, Maryland. 

 Holotype. Cat. No. 53283, U.S.N.M. 



Aparchites granilabiatus (Ulrich). 



Leperditia granilabiata Ulrich, Amer. Geol., 10, 1892, p. 267, pi. 9, figs. 31-33. 

 Aparchites granilabiatus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 644, pi. 45, 



figs. 21-23. 



Black River (Decorah): St. Paul, Minnesota. 

 Holotype. Cat. No. 41828, U.S.N.M. 



Aparchites granilabiatus neglectus Ulrich. 



Aparchites granilabiatus neglectus Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 645. 

 Black River (Decorah): Minneapolis, Minnesota. 

 Cotypes. Oat. No. 41835, U.S.N.M. 



