scHccHEET.] INDEX AND BIBLIOGRAPHY, 139 



Acrothele matthewi costata Matthew. '?Midclle Cambrian. 



Acrotbelo matthewi var. costata Matthew, Traus. N. Y. Acad. Sci., XIY, 1895, 



p. 128, pi. 5, fig. 9. 

 Loc. Hanford Brook, New Bruuswick. 



Acrothele matthewi lata Matthew. Middle Cambrian. 



Acrotbelo matthewi var. lata Matthew, Trans. Royal Sof. Canada, III, 1886, p. 41, 

 pi. 5, fig. 17.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 3, 

 figs. 26-28. 



Loc. Portland, New Brunswick. 



Acrothele matthewi prima Matthew. Middle Cambrian. 



Acrothele matthewi var. prima Matthew, Trans. Royal Soc. Canada, III, 1886, p. 



41, pi. 5, fig. 16.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 3, 



fig. 25. 

 Loc. Hanford Brook, New Brunswick. 



Acrothele suhsidua (White). Lower and Middle Cambrian. 



Acrotretaf subsidua White, Wheeler's Geogr. Geol. P2xpl. and Surv. west 100 

 Merid., Prelim. Rep., 1874, p. 6;— Ibidem, Final Rep., IV, 1875, p. 34, pi. 1, 

 fig. 3. 



-AfTothele subsidua White, Proc. IT. S. National Mus., Ill, 1880, p. 47.— Walcott, 

 Bull. U. S. Geol. Survey, 30, 1886, p. 108, pi. 9, fig. 4;— Tenth. Ann. Rep. 

 U.S. Geol. Survey, 1891, p. 608, pi. 70, fig. 1.— Beecher, American .Tour. Sci., 

 XLI, 1891, p. 357, pi. 17, fig. 12.— Hall and Clarke, Pal. New York, VIII, Pt. 

 I, 1892, p. 100, pi. 3, figs. 30, 31. 



Loc. Antelope Spring, Utah ; Pioche, Nevada. 



ACROTRETA Kutorga. Genotype A. subconica Kntorga. 



Acrotreta Kutorga, Verhand. Kais. Min. Gessel. zu St. Petersburg, 1848, p. 

 275.— Walcott, Mon. U. S. Geol. Survey, VIII, 1884, p. 16.— Hall and Clarke, 

 Pal. New York, VIII, Pt. I, 1892, pp. 101, 166;— Eleventh Ann. Rep. N. Y. 

 State Geologist, 1892, p. 250. 



Acrotreta attenuata Meek = A. gemma. 



Acrotreta haileyi Matthew. Middle and Upper Cambrian. 



Acrotreta baileyi Matthew, Trans. Royal Soc. Canada, III, 1886, p. 36, pi. 5, 

 iig. 13.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, p. 102, pi. 3, 

 figs. 32-34.— Matthew, Trans. Royal Soc. Canada, IX, 1892, p. 43, pi. 12, lig. 7d. 



Loc. Hanford Brook and Long Reach, New Brunswick. 



Acrotreta gemma Billings. Lower to Upper Cambrian. 



Acrotreta geu.nia Billings, Pal. Fossils, I, 1865, p. 216, fig. 201. — Walcott, Mon. 

 U. S. Geol. Survey, VIII, 1884, ]>. 17, pi. 1, fig. 1; pi. 9, fig. 9;— Bull. U. S. 

 Geol. Survey, 30, 1886, p. 98, pi. 8, tig. 1;— Tenth Ann. Rep. U. S. Geol. Sur- 

 vey, 1891, p. 608, pi. 67, fig. 5.— Hall and Clarke, Pal. New York, VIII, Pt. I, 

 1892, p. 102, figs. 55-57.— Matthew, Trans. N. Y. Acad. Sci., XIV, 1895, p. 126. 



Acrotreta subconica Meek, Hayden's Sixth Ann. Rep. U. S. Geol. Survey Terr., 

 1873, p. 463. 



Acrotreta attenuata Meek, Ibidem, 1873, p. 463. 



Acrotreta pyxidicula White, Wheeler's (ieogr. Geol. P^xpl. and Survey west 100 

 Merid., Prelim. Rep., 1874, p. 9;— Ibidem, Final Rep., IV, 1875, p. 53, i)l. 3, 

 fig. 3. 



Loc. Near Portland Creek, Newfoundland; Eureka and White Pine mining dis- 

 tricts, Nevada. 



Acrotreta gemma depressa Walcott. Middle Cambrian. 



Acrotreta gemma var. depressa Walcott, Proc. U. S. National Mus., XI, 1888, p. 441. 

 Loc. Mount Stephen, British Columbia. 



