24 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Aguostus sitlenbladhi Linnarsson. 



Agnostus Sidenbladhi Linnarsson, Vesterg. Cambr., etc., 1869, p. 82, pi. 2, figs. 

 60, 61 (K. Sv. Vet. Akad. HandJ.); Ofvers. K. Vet.-Akad. Forhandl., 26, 

 1869, p. 195. Brogger, Die Sil. Etageft 2-3, Kristiania, 1882, p. 56 (cites bib- 

 liography). 



Canadian: Europe; Point Levis, Quebec (Levis-Diplograptus dentatus zone) 

 [Raymond]. 



Agnostus trisectus Salter. 



Agnostus trisectus Salter, Mem. Geol. Surv.,.dec. 13, 1864, p. 10. pi. 1, fig.ll. 

 Belt, Geol. Mag., 5, 1868, p. 11. Salter, Cat. Camb. Sil. Foss., 1873, p. 

 10. Linnarsson, Geol. For. Stockholm Forhandl., 5, 1880, p. 157, p. 6, 

 fig. 16. Tullberg, Sveriges Geol. Unders., Ser. C, No. 42, 1880, p. 24, pi. 

 1, fig. 13. Linnarsson, ibid., No. 43, 1880, p. 27, pi. 2, fig. 16. Matthew, 

 Trans. Royal Soc., Canada, 11, sec. 4, 1894, p. 110. Groom, Quart. Jour. Geol. 

 Soc., London, 58, 1902, p. 119. 



Lower Ordovician: Europe. 



Canadian (Bretonian Div. C 3b): McNeil Brook, Cape Breton, Nova Scotia. 



Agnostus trisectus germanus Matthew. 



Agnostus trisectus mut. germanus Matthew, Bull. Nat. Hist. Soc. New Bruns- 

 wick, No. 19, 1901, p. 279; Geol. Surv. Canada, Rep. Cambrian Rocks Cape 

 Breton, 1903, p. 221. 



Canadian (Bretonian Div. C 3b): East Bay, east of Bras d'Or Lake, Cape Breton, 

 Nova Scotia. 



Agnostus trisectus ponepunctus Matthew. 



Agnostus trisectus mut. ponepunctus Matthew, Bull. Nat. Hist. Soc. New Bruns- 

 wick, No. 19, 1901, p. 278, pi. 5, fig. 8a-c; Geol. Surv. Canada, Rep. Cambrian 

 Rocks Cape Breton, 1903, p. 220, pi. 17, figs. 8a-c. 



Canadian (Bretonian Div. C 3b): McAdam shore, East Bay, Bras d'Or Lake, 

 Cape Breton, Nova Scotia. 



AGNOSTUS TUBERCULATUS Quenstedt. See Beyrichia tuberculata. 



Agnostus tumidosus Hall and Whitfield. 



Agnostus tumidosus Hall and Whitfield, U. S. Geol. Expl. 40th Parl., 4, 1877, p. 



231, pi. 1, fig. 32. Brogger, Geol. Foren Stockholm Forhandl., 8, 1886, p. 



204. Vogdes, Amer. Geol., 9, 1892, p. 393, pi. 10, fig. 8. Walcott, Mono. 



U. S. Geol. Surv., 32, pt. 2, 1899, p. 455, pi. 63, figs. 5, 5a. 

 Cambrian and ?Ordovician (Pogonip): Eureka District, Nevada. 



AGRAULOS CYLINDRICUS Miller. See Arionellus cylindricus. 



AGRAULOS OWENI Meek and Hayden. See Ptychoparia oweni. 



AGRAULOS (ARIONELLUS) PUSTULATUS Vogdes. See Glaphurus pustulatus. 



AGRAULOS SARATOGENSIS Walcott. See Plethopeltis saratogensis. 



ALECTO Lamouroux. See Stomatopora Bronn. 



ALECTO AULOPOROIDES Nicholson. See Proboscina auloporoides. 



ALECTO CONFUSA Nicholson. See Proboscina confusa. 



ALECTO PRONDOSA Nicholson. See Proboscina frondosa. 



ALECTA INFLATA Hall. See ( 'orynotrypa inflata. 





