scHicHERT] INDEX AND BIBLIOGRAPHY. 219 



DiscinaC?) vancouverensis Whiteaves. Cretaceous. 



Disciua v.incouverensis Whiteaves, >[e.so/oi(^ Fossils, I, Oeol. Survey Canada, 



1879. p. 177, pi. 20, (ijj;. (5. 

 Lor. Admiralty Island. 



Disciiia vamixemi Hall=Orbiculoidea vaiiiixemi. 



Discina varsoviensis Worthen=Orbi<'nloidea varsaviensis. 



Disciiiclla Hall = Operculiuii of Ptoropod. 



DISCINISCA Dall. (ieiiotype Discina lamellosa Broderip. 



Diseinisca Dall, Bull. Mus. Comp. Zoology, III. 1871. ]>. 37. 



Discinisca lugubris (Conrad). Miocene and Pliocene. 



Cajiulus liijj;'ubri8 Conrad. Jour. Acad. Xat. Sci. Philadelphia, \\l, 1834, p. 143. 

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



Hg. 2. — Tuoniey and Holmes, Fcss. 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, tig. 2. 

 Disciua lugubris, Whitfield, Mon. T'. S. Geol. Survey, XXIV, 1894, p. 23, pi. 1, tigs. 



1-3. 

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



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

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



Discinisca multilineata (Conrad). Miocene. 



Orbii'ul:) multilineata Conrad, Fossils Medial Tertiai-y For, U. S., 1845, p. 75, pi. 

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

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

 43, fig. 3. 



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



0/>.s. Probably a less worn variety of 1). lugubris (Dall). 



DISCINOPSIS Matthew. Genotype Acrotreta"? gulielmi Matthew. 



Disciiiopsis (Matthew MS.) Hall and Clarke, Pal. New York, VJII, Pt. 1, 1892, pp. 

 105, 167 ;— 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, tig. 14. 

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



pi. 3, tigs. 20-24. 

 Loc. Portland, New Brunswick. 



EATONIA Hall. Genotype Atrypa peeuliaris Conrad. 



Katonia 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.— H.all 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. Xat. Hist., 3, 1893, 



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

 Loc. Jacksou County, Illinois. 



Eatonia eminens Hall. Lower Helderberg (Dev.). 



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

 Pal. Xew York, III, 1859, p. 242, i)l. 37, tig. 2.— Hall and Clarke, Pal. New 

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



Loc. Decatur County, Tennessee. 



