258 SYNOPSIS OF AMKRICAN FOSSIL BRACHIOPODA. [bull. 87. 



Ling^ilella(?) paliformis Hall. Hamilton (Dcv.). 



Lingula paliformis Hall, Tbiiteeuth Kep. New York State Cab. Nat. Hist., ISliO, 



p. 76, fig. 1. 

 Lingula palaiformis Hall, Pal. New York, IV, 18<>7, p. ><, pi. 1, fig. 7. — Whitfield, 



Geol. Wisconsin, IV, 1882, p. 324, pi. 25, fig. 10. 

 Lingulella? pahcformis Hall ami Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 



59, 64, pi. 2, figs. 6-8. 

 Loc. Cayuga Lake, New York ; Milwaukee, Wisconsin. 



Lingulella radula Matthew. JMiddle Cambrian. 



Lingulella radula Matthew, Trans. Koyal Soc. Canada, A'lll, 1891, p. 147, pi. 15, 



figs. 7, 8. 

 Loc. St. John, New Brunswick. 



Lingulella roberti Matthew. • Lower Ordovician. 



Lingulella roberti Matthew, Trans. Royal Soc. Canada, 2d ser., I, 189G, p. 256, 



I'l. 1, fig. 2. 

 Loc. Cape Breton, Nova Scotia. 



Lingulella selwyni Matthew. Lower Ordovician. 



Lingulella selwyni Matthew, Trans. Royal Soc. Canada, 2d ser., I, 1896, p. 255, 



pi. 1, fig. L 

 Lac. Cape Breton, Nova Scotia. 



Lingulella? spissa=Spha}robolus spissus. 



Lingulella starri Matthew. Middle Cambrian. 



Lingulella starri Matthew, Trans. Royal Soc. Canada, VIII, 1891, p. 146, pi. 15, 



figs. 5, 6. 

 Loc. St. Johns, New Brunswick. 



Lingulella starri minor Matthew. Upper Cambrian. 



Lingulella starri var. minor Matthew, Trans. Royal Soc. Canada, IX, 1892, p. 58. 

 Loc. Near St. John, New Brunswick. 



Lingulella stoneana Whitfield. Upper Cambrian. 



Lingula aurora ^ar. Hall, Sixteenth Rep. New York State Cab. Nat. Hist., 1863, 

 p. 127, pi. 6, figs. 6-8;— Trans. Albany Institute, V, 1867, p. 104;— Twenty- 

 third Rep. New York State Cab. Nat. Hist., 1873, pi. 13, fig. 5. 



Lingulella stoneana Whitfield, Geol. Wisconsin, IV, 1882, p. 334, pi. 27, figs. 6, 

 7.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 2, figs. 9-11. 



Loc. Prairie du Sac and Mazomanie, Wisconsin. 



Lingulella winona (Hall). Middle Cambrian. 



Lingula winona Hall, Sixteenth Rep. New York State Cab. Nat. Hist., 1863, p. 



126, pi. 6, fig. 9;— Trans. Albany Institute, V, 1867, p. 102.— Sardesou, Bull. 



Minnesota Acad. Nat. Sci., IV, 1896, p. 96. 

 Loc. Lansing, Iowa; Wisconsin. 



LINGULEPIS Hall. Genotype Lingula pinniformis Owen. 



Lingulepis Hall, Sixteenth Rep. New York State Cab. Nat. Hist., 1863, p. 12!). — 

 Meek and Hayden, Pal. Upper Missouri, Smithsonian Cont. to Knowl., XIV, 

 172, 1864, p. 1.— Hall, Trans. Albany Institute, V, 1867, j.. 106.— Hall and 

 Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 59, 163;— Kleventh Ann. Rep. 

 New York State Geologist, 1894, p. 231. 

 Oha. The essential difterence between Lingulepis and Lingulella is that the ven- 

 tral beak of the former is often much attenuated. The amount of attenua- 

 tion, however, is often a very changeable feature in si)e(imens of a species 

 from a locality. It is this variation and the want of largt! collections that 

 has lead to the making of too many sjiccies of Liugulepis. 



