576 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Gyronema speciosum Whiteaves. 



Gyronema speciosum Whiteaves, Gool. Surv. Canada, Ann. Rep., n. s., 14, App. 



F, 1904, p. 50; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 258, pi. 29, 



fig. 2. 

 Niagaran: Ekwan River, Canada. 



HABROCRINUS D'Orbigny. Genotype: H. pusillus D'Orbigny. 



Abrocrinus D'Orbigny, Prodrome Pal. Strat., 1, 1844, pp. 47-146; Cours Elemen- 



taire de Pal., Geol., 2, 1851, p. 144. 

 Habrocrinus Angelin, Icon. Crin. Suec., 1878, p. 3. Wachsmuth and Springer, 



Proc. Acad. Nat. Sci. Philadelphia, 1881, p. 279 (Rev. Pal., pt. 2, p. 105). 



Habrocrinus benedicti (Miller). 



Saccocrinus benedicti Miller, 18th Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1894, 



p. 283, pi. 5, fig. 1, 2 (adv. sheets, 1892). 

 Habrocrinus benedicti Slocom, Field Columbian Mus., 2, Geol. Ser., 1908, p. 295 



pi. 87, figs. 6, 7. 

 Periechocrinus chicagoensis Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 



1902, p. 131, pi. 13, figs. 7, 8. Grabau and Shimer, N. A. Index Fossils, 



1910, p. 536. 

 Niagaran: St. Paul, Indiana (Laurel); Bridgeport and Joliet, Illinois (Racine). 







Habrocrinus farringtoni Slocom. 



Habrocrinus farringtoni Slocom, Field Columbian Mus. Geol., 2d ser., 2, 1908, p. 



298, pi. 87, figs. 1-5. 

 Niagaran (Racine): Drainage Canal near Leniont, Illinois. 



Habrocrinus howardi (Miller). 



Saccocrinus howardi Miller, 18th Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1894, 



p. 284, pi. 5, fig. 3-5 (adv. sheets, 1892); N. A. Geol. Pal., 1st App., 1892, p. 



681, fig. 1244. 

 Periechocrinus Howardi Wachsmuth and Springer, Mem. Mus. Comp. Zool., 



Harvard, 21, 1897, p. 529. 



Habrocrinus howardi Slocom, Field Columbian Mus., 2, Geol. Ser., 1908, p. 295. 

 Niagaran (Laurel): St. Paul, Indiana. 



Habrocrinus lemontensis Slocom. 



Habrocrinus lemontensis Slocom, Field Columbian Mus., Geol. Ser., 2, 1908, p. 



297, pi. 87, figs. 8-10. 

 Niagaran (Racine): Drainage Canal near Lemont, Illinois. 



HABROCRINUS ORNATUS Wachsmuth and Springer. See Periechocrinus ornatus. 



HALICHONDRITES Dawson and Hinde. 



Genotype: H. confusus Dawson and Hinde. 



Halichondrites Dawson and Hinde, Canadian Rec. Sci., 3, 1888, p. 68. Dawson, 

 Trans. Roy. Soc. Canada, 7, sec. 4, 1890, p. 52. Miller, N. A. Geol. Pal., 1st 

 App., 1892, p. 667. Rauff, Neues Jahrb. Min., Geol. Pal., 2, 1893, p. 58. 



Halichondrites confusus Dawson and Hinde. 



Halichondrites confusus Dawson and Hinde, Trans. Roy. Soc. Canada, 7, sec. 4, 



1890, p. 52, fig. 23. Dawson, ibid., 2d ser., 2, sec. 4, 1896, p. 116, fig. 26. 

 Canadian? (Levis?) : Metis, Quebec. 



HALLIA Edwards and Haime. Genotype: H. insignis Edwards and Haime. 



Hallia Edwards and Haime, Mon. Polyp. Foss. Terr. Pal., 1851 (Arch, du Mus. 



d'Hist. Nat., 5), pp. 165-353. Pictet, Traite de Pal., 2d ed., 4, 1857, p. 453 



