BIBLIOGEAPHIC LIST OF GENERA AND SPECIES. 893 



Orthls lamellosa Twenhofel. 



Orthis lamellosa Twenhofel, Bull. Victoria Mem. Mus., 3, 1914, p. 24, pi. 1, figs. 



1-3. 

 Gamachian (Ellis Bay): Ellis Bay, Anticosti. 



ORTHIS LATICOSTA Meek. See Plaiystfophia laticosta. 



Orthis laurentina (Billings). 



Orthis laurentina Billings, Geol. Surv. Canada, Rep. for 1856, 1857, p. 297; Pal. 

 Foss., 1, 1865, Geol. Surv. Canada, p. 138, fig. 115 (adv. sheets 1862). 

 Shaler, Mem. Geol. Surv. Kentucky, 1, 3d Mem., 1876, p. 41. 



Billingsella? laurentina Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 194, 

 231, 238, pi. 7A, figs. 1-6. 



Gamachian (Ellis Bay): Junction Cliff, Anticosti. 



ORTHIS LENTICULARIS Davidson. See Eoorthis (Orusia) lenticularis. 



ORTHIS LENTICULARIS var. ATRYroiDES Matthew. See Eoorthis (Orusia) lenticularia 

 atrypoides. 



ORTHIS LENTICULARIS var. LYNCIOIDES Matthew. See Eoorthis (Orusia) lenticularis 

 lyncioides. 



ORTHIS LENTICULARIS STROPHOMENOIDES Matthew. See Eoorthis (Orusia) lenticu- 

 laris. 



Orthis(?) leptsenoides Emmons. 



Orthis leptsenoides Emmons, Geol. New York, Hep. 4th Dist., 1842, p. 396, fig. 1. 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 521. Schuchert, 

 Bull. U. S. Geol. Surv. 87, 1897, p. 288. 

 Trenton: New York. 

 Observation. Undefined and figure too poor for identification. 



ORTHIS(?) LINNEYI James. See Orthorhynchula linneyi. 



ORTHIS LONENSIS Walcott. See Hebertella lonensis. 



ORTHIS (PL^SIOMYS) LORICULA Hall. See Dinorthis (Tlaesiomys) deflecta. 



ORTHIS LUNATA Sowerby. See Dalmanella lunata. 



ORTHIS LYNX of authors. See Platystrophia lynx and P. biforata. 



ORTHIS MACLEODI Whitfield. See Dalmanella macleodi. 



ORTHIS MACRIOR Sardeson. See Dalmanella macrior. 



ORTHIS MARIA Billings. See Hebertella maria. 



ORTHIS MEDIA Shaler. See Dalmanella elegantula media. 



ORTHIS MEDIA Winchell. See Pianodema subaequata perveta. 



ORTHIS MEEDSI Winchell and Schuchert. See Dinorthis meedsi. 



ORTHIS (DINORTHIS) MEEDSI var. ARCTICA Schuchert. See Dinorthis meedsi arctica. 



ORTHIS MEEDSI var. GERMANA Winchell and Schuchert. See Dinorthis meedsi 

 germana. 



ORTHIS MEEKI Miller. See Dalmanella meeki. 



