BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 839 



MURCHISONIA D'Archiac and Verueuil. 



Genotype: M. bilineata D'Archiac and Vemeuil. 

 Murchisonia D'Archiac and Verneuil, Bull. Geol. Soc. France, 12, 1841, p. 154. 



Observation. — The numerous citations of American authors to this genus are 

 omitted here because probably none of them refers to species congeneric with 

 the type. Murchisonia like Pleurotomaria may not be represented in American 

 Paleozoic strata, both genera being used as provisional places for species insuf- 

 ficiently described. See Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, 

 p. 959, for discussion of this subject. 



Murchisonia abbreviata Hall. See Lophospira subabbreviata. 



Murchisonia aciculata Hall. 



Murchisonia aciculata Hall, Canadian Nat. Geol., 5, 1860, p. 151. — Dawson, 



Acadian Geol., 2d ed., 1868, p. 605. 

 Silurian: Arisaig, Nova Scotia. 



Murchisonia acrea Billings. See Turritoma acrea. 



Murchisonia acuminata Miller. See Lophospira acuminata. 



Murchisonia Ada Billings. See Turritoma ada. 



Murchisonia Adelina Billings. See Ectomaria adelina. 



Murchisonia agilis Billings. See Hormotoma? agilis. 



Murchisonia Alexandra Billings. See Omospira alexandra. 



Murchisonia ampla Miller. See Lophospira ampla 



Murchisonia angustata Hall. See Hormotoma gracilis angustata. 



Murchisonia Anna Billings. See Hormotoma anna. 



Murchisonia Arachne Billings. See Lophospira? arachne. 



Murchisonia arisaigensis Hall. 



Murchisonia Arisaigensis Hall, Canadian Nat. Geol., 5, I860, p. 154. — Dawson, 



Acadian Geol., 2d ed., 1868, p. 604. 

 Silurian: Arisaig, Nova Scotia. 



Murchisonia Artemesia Billings. Sec Hormotoma artemesia. 



Murchisonia asper Billings. See Lophospira aspera. 



Murchisonia augustina Billings. See Lophospira augustina. 



Murchisonia (Hormotoma) augustina ottawaensis Ami. 



Murchisonia (Hormotoma) Augustina var. Ottawaensis n. var. Ami, Geol. Surv. 



Canada, Ann. Rep., n. s., 12, App. G, 1901, p. 68 (nom. nud.). 

 Trenton: Ottawa, Ontario. 



Murchisonia bellicincta Hall. See Hormotoma bellicincta and H. trentonensis. 



Muucjiisonia bellicincta Owen. See Hormotoma major. 



Murchisonia bellicincta var. teretiformis Whiteaves. See Hormotoma tereti- 



f i irmis. 



Murchisonia bicincta Hall. See Lophospira bicincta. 



Murchisonia bicincta of authors. See Lophospira obliqua and L. perforata. 



