314 PALEONTOLOGY OF NEW YORK. 



Genus S T R P H A L O.S I A, King. 1844. 



PLATE XVu, FIGS. 3-t-37; PLATE XVI, FIGS. 12,16,30,38,42; PLATE XVII, FIGS. 10-1.5,50,51; .\ND PLATE XVUa, 



FIGS. 1-9. 



1889. iSpondylus, Munster. Beitr. zur Petrefactenkunde, Heft i, p. 43, pi. iv, fig. 3. 



1842. Orthis, Geinitz. Neues Jahvbucb fiir Min., etc., p. 578, pi x, figs. 12, 13. 



1843. Stropliomena, Hall. Geology of N. Y. ; Rept. Fourth District, p. 189, fig. 4. 



1844. Strophalosia, King. Annals and Magazine of Natural History, vol. xiv, p. 313. 



1845. Leptmnalosia, King (MS.). In de Verneuil's Geol. de la Russ , etc., vol. ii, p. 281. 



1846. Strophalosia, King. Annals and Magazine of Natural History, vol. xvii, ji. 92. 



1847. Orthothrix, Geinitz. Bull. Imp. Soc. des Nat. de Moscou, vol. xx, p. 84. 



1847. Prochtctus, de Koninck. Monographie des genres Productus et Chonetes, pp. 148, 150, pi. xi, 



fig. 4 ; pi. XV, figs.-4, 5. 



1848. Orthothrix, Geinitz. Verstein. der deutsch. Zechst.-gebirg., p. 14, pi. v, figs. '2,1-yi; pi. vi, fig. 20. 

 1850. Strophalosia, King. Monogr. Permian Fossils of England, p. 93, pi. xii, figs. 1-33. 



1858. Strophalosia, Davidson. Introd. British Fossil Brachiopoda, p. 115. 



1855. Leptcena, McCoy. British Pateozoic Fossils, p. 457. 



1857. Strophalosia, Davidson. British Permian Fossils, p. 38, pi. iii, figs. 1-10, 19-4J. 



1857. ProcUirtella, Hall. Tenth Rept. N. Y. State Cab. Nat. Hist., p. 171. 



1861. Strophalosia, Geinitz. Dyas, p. 93, pis. xvii, figs. 1-19, 21-39; xviii, figs. 1-20 ; xix, figs. 2-6, 25. 



1863. Strophalosia, A. Winchell. Proe. Acad. Nat. Sci., Phila., vol. 15, p. 4. 



1866. Crania, A. Winchell. Rept. Lower Peninsula of Michigan, p. 92. 



1867. Chonetts, Hall. Palteontology of N. Y., vol. iv, p. 143, pi. xxii, figs. 29-43. 



1867. Productella, Hall. Paleontology of N. Y., vol. iv, p. 160, pi. xxiii, figs. 12-24. 



1868. Aulosteges, White and St. John. Ti-ans. Chicago Acad. Sci., vol. i, p. 118, fig. 2. 

 1874. Strophalosia, Dekbt. Bull. Cornell University, vol. i. No. 2, p. 45, jils. iii, iv, viii, ix. 



1883. Chonetes (Productella, Strophalosia), Hall. Ann Rept. N. Y. State Geologist for 1882, pi. xvi 



(47), figs. 12, 16, pi. xvii (48), figs. 10-15, 50, 51. 



1884. Productus [Productella), Walcott. Palaeontology Eureka Disti-ict, p. 131, pi. xiv, fig. 2. 



1884. Strophalosia, Waagen. Salt-Range Fossils ; Brachiopoda, pp. 640-657, pi. Ixiii, figs. 2-8 ; pi. Ixiv, 



figs. 1-9 ; pi. Ixv, figs. 1-9. 

 1889. Productella (Strophalosia), Whiteaves. Contributions Can. Geol., vol. i, p. 112, pi. xvi, figs. 1,2. 



Diagnosis. Shells productoid in general form; a cicatrix, usually apparent 

 on the umbo of the pedicle-valve, indicates that they were attached to foreign 

 bodies by the substance of the shell. Both valves have a well defined area 

 and covered delthyrium, these features being much the more conspicuous in 

 the pedicle-valve. In this valve the teeth are prominent, but not supported by 

 lamellae; the muscular arrangement is the same as in Productus, though the 

 cardinal impressions are relatively larger and more elongate, extending beyond 

 the limits of the central adductors. 



In the brachial valve the cardinal process is erect, bifid on its anterior, and 

 quadrifid in its posterior face. It is supported on each side by short, arched 

 crural plates, and is continued into a median septum which extends for half 



