scHucHEET] INDEX AND BIBLIOGRAPHY. 219 



Discina(?) vancouverensis Whiteaves. Cretaceous. 



Discina viiucouverensis Whiteaves, Mesozoic Fossils, I, Geol. Survey Canada, 



1879, p. 177, pi. 20, iig. 6. 

 Loc. Admiriilty Island. 



Discina vauuxemi Hall=Orbiculoidea vannxemi. 



Discina varsoviensis Wortlien=Orbi(',uloiclea varsaviensis. 



Disciiiella Hall = Operculum of Pteropod. 



DISCINISCA Dall. Genotype Discina lamellosa Broderip. 



Discinisca Dall. Bull. Mus. Comp. Zoology, III. 1871, p. 37. 



Discinisca lugubris (Conrad). Miocene and Pliocene. 



Capulus lugubris Conrad, Jour. Acad. Nat. Sci. Philadelphia, VII, 1834, p. 143. 

 Orbicula lugubris Conrad, Fossils Medial Tertiary For. U. S., 1845, p. 75, pi. 43, 



fig. 2. — Tuomey and Holmes, Foss. South Carolina, 1855, p. 17, pi. 5, fig. 1. — 



Dall, Republication of Conrad's Foss. Medial Tert. For. U. S., 1893, p. 101, 



pi. 43, fig. 2. 

 Discina lugubris, Whitfield, Mon. IT. S. Geol. Survey, XXIV, 1894, p. 23, pi. 1, figs. 



1-3. 

 Loc. St. Marys County, Maryland; Petersburg, Virginia; Peedee River, South 



Carolina; Atlantic City, Sliiloh, and Bridgeton, New Jersey. 

 Ohs. Referred to Discinisca on authority of Dr. W. II. Dall. 



Discinisca multilineata (Conrad). Miocene. 



Orbicula multilineata Conrad, Fossils Medial Tertiary For. U. S., 1845, p. 75, pi. 

 43, fig. 3. — Tuomey and Holmes, Foss. South Carolina, 1855, p. 18, pi. 5, fig. 2. — 

 Dall, Republication of Conrad's Foss. Medial Tert. For. U. S., 1893, p. 101, pi. 

 43, fig. 3. 



Loc. City Point, Virginia; Pedee River, South Carolina. 



Ohs. Probably a less worn variety of D. lugubris (Dall). 



DISCINOPSIS Matthew. Genotype Acrotreta? gulielmi Mattliew. 



Disciuopsis (Matthew MS.) Hall and Clarice, Pal. New York, VllI, Pt. 1, 1892, pp. 

 105, 1G7;— Eleventh Ann. Rep. New York State Geologist, 1894, p. 250. 



Discinopsis gulielmi Matthew. Middle Cambrian. 



Acrotreta? gulielmi Matthew, Trans. Royal Soc. Canada, 1886, p. 37, pi. 5, fig. 14. 

 Discinopsis gulielmi Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 105, 



pi. 3, figs. 20-24. 

 Loc. Portland, New Brunswick. 



EATONIA Hall. Genotype Atrypa peculiaris Conrad. 



Eatonia Hall, Tenth Rep. New York State Cab. Nat. Hist., 1857, p. 90;— Twelfth 

 Rep. Ibidem, 1859, p. 35;— Pal. New York, III, 1859, p. 432.— Billings, Proc. 

 Portland Soc. Nat. Hist., 1863, p. 111.— Hall and Clarke, Pal. New York, 

 VIII, Pt. II, 1893, p. 205 ;— Thirteenth Ann. Rep. New York State Geologist, 

 1895, p. 829. 



Eatonia coulteri Miller and Gurley. Oriskany (Dev.). 



Eatonia coulteri Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 3, 1893, 



p. 72, pi. 7, figs. 8-11. 

 Loc. Jackson County, Illinois. 



Eatonia eminens Hall. Lower Helderberg (Dev.). 



Eatonia eminens Hall, Tenth Rep. New York State Cab. Nat. Hist., 1857, p. 92; — 



Pal. Now York, III, 1859, p. 242, pi. 37, fig. 2.— Hall and Clarke, Pal. New 



York, VIII, Pt. II, 1893, p. 206. 

 Loc. Decatur County, Tennessee. 



