BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1083 



Pycnosaccus americanus Weller. 



Pycnosaccus americanus Weller, Bull. Chicago Academy of Science, 4, 1900, 



p. 149, pi. 15, fig. 12. 

 Niagaran (Racine): Hawthorne, Illinois. 



Pycnosaccus caliculus (Hall). 



Lecanocrinus caliculus Hall, Pal. New York, 2, 1852, p. 203, pi. 46, figs. 3a, b. 

 Pycnosaccus caliculus Springer, Mon. Crin. Flex., Smiths. Inst. (in press). 

 Clinton (Rochester): Lockport, New York. 



Pycnosaccus dubius Springer. 



Pycnosaccus dubius Springer, Mon. Crin. Flex., Smiths. Inst. (in press). 

 Niagaran (Brownsport): Decatur County, Tennessee. 



Pycnosaccus patei Springer. 



Pycnosaccus patei Springer, Mon. Crin. Flex., Smiths. Inst. (in press). 

 Niagaran (Brownsport): Decatur County, Tennessee. 



Pycnosaccus tenuibrachiatus Springer. 



Pycnosaccus tenuibrachiatus Springer, Mon. Crin. Flex., Smiths. Inst. (in press). 

 Helderbergian (Keyser): Keyser, West Virginia. 



Pycnosaccus welleri Springer. 



Pycnosaccus welleri Springer, Mon. Crin. Flex., Smiths. Inst. (in press). 

 Niagaran (Brownsport): Decatur County, Tennessee. 



PTCNO STYLUS Whiteaves. Genotype: P. guelphensis Whiteaves. 



Pycnostylus Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1884, p. 2. 



Miller, N. A. Geol. Pal., 1889, p. 202. Schluter, Abhandl. z. geol. Special- 



karte Preussen und den Thuringischen Staaten, 8, Heft 4, 1889, p. 9 (267), 



footnote. Sherzer, Amer. Geol., 7, 1891, pp. 284-289. Lambe, Cont. Can. 



Pal., Geol. Surv. Canada, 4, pt. 2, 1901, p. 131. Grabau and Shimer, N. A. 



. Index Fossils, 1; 1906, p. 61. 



Pycnostylus elegans Whiteaves. 



Pycnostylus elegans Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1884, 

 p. 4, pi. 1, figs. 2, 2a. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, 

 p. 847, figs. Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 49 

 (loc. occ.). Lambe, Cont. Can. Pal., Geol. Surv. Canada, 4, pt. 2, 1901, 

 p. 133. Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 248 (loc. 

 occ.). Lambe, Cruise of the "Neptune", App. 4, 1906, p. 326. 



Niagaran: Hespeler and Durham, Ontario (Guelph); Southampton Island, Hud- 

 eon Bay and Ekwan River, Canada. 



Pycnostylus guelphensis Whiteaves. 



Pyncnostylus Guelphensis Whiteaves, Pal. Foss. Geol. Lorv. Canada, 3, pt. 1, 

 1884, p. 3, pi. 1, figs, la, b. Miller, N. A. Geol. Pal., 1889, p. 202, fig. 212. 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 847, figs. Whiteaves, 

 Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 49. Lambe, Cont. Can. 

 Pal., Geol. Surv. Canada, 4, pt. 2, 1901, p. 132, pi. 10, figs. 4, 4a. Whiteaves, 

 Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 247 (loc. occ.). Grabau and 

 Shimer, N. A. Index Fossils, 1, 1906, p. 62, fig. 91. 



Amplexus laxatus Billings, Geol. Canada, 1863, p. 340 (nom. nud.). Nicholson 

 (part), Rep. Pal. Prov. Ontario, pt. 2, 1875, p. 77. 



Niagaran: New Hope, Guelph, etc., Ontario; Wisconsin (Guelph); Ekwan 

 River, Canada. 



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