314 PALjEONTOLOGY OF NEW YORK. 



Genus STROPHALOSIA, Kino. 1844. 



rL.VTK XVli, FIGS. -H-.H; plate XVI, FIGS, li, 1(5. 30, 38, i-2; FLATE XVII, FIGS. 10-I.->, ."in, .il; AND PLATE XVllA, 



FIGS. 1-9. 



18H9. Spmidylii.''. Mun.ster. Beitr. zui- Petrefaotenkuiule, Heft i, p. 43, jil. iv, fig-. 3. 



1842. Orth'is, Gkinitz. Neues Jahi-lmch fiir Min.. etc., p. 578, pi x, tig-s. 12, 13. 



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

 1S44. Stroplialosia, King. Annals and Magazine of Natural History, vol. xiv, p. 313. 

 184.'). Leptmnaloiiia, King (MS.). In de Vei'neuil's Geol. de la Rii.«s , etc., vol. ii, p. 281. 



1846. StniphaUma, King. Annals and Magazine of Natural Hi.story, vol. xvii, p. 92. 

 1S47. Orthothrix, Geinitz. Bull. Imp. Soc. des Nat. de Moscou, vol. xx, p. 84. 



1847. Productus, de Koninck. Monographie de.s genres Productus et Chonetes, pp. 14S, 150, pi. xi, 



fig. 4 ; pi. XV, tigs. 4, 5. 



1848. Orthofhiix, Geinitz. Verstein. der deutsch. Zechst.-gebirg., p. 14, pi. v, figs. 27-37; \>l. vi, fig. 20. 

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



1853. Strophalosia, Davidson. Introd. British Fossil Brachiopoda, p. 115. 



1855. Leptaena, McCoy. British PaUeozoic Fossils, p. 457. 



1857. Strophahisia, Davidson. British Permian Fo.ssils, p. 38, \A. iii, figs. 1-10, 19-4J. 



1857. Produrtella, 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, 26. 



1863. Strophalosia, A. Winchell. Pi-oc. Acad. Nat. Sci., Phila., vol. 15, p. 4. 



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



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

 1S67. Produclella, Hall. Paheontology of N. Y., vol. iv, p. 160, pi. xxiii, figs. 12-24. 



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

 1874. Strophalosia, Dekby. Bull. Coi'nell University, vol. i, No. 2, p. 45, pis. iii, iv, viii, ix. 



1883. Chonetes (Productella, Slrophalusia), 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 (Prodiictdla), Walcott. Palseontology Eureka District, p. 131, pi. xiv, fig. 2. 



1884. Striiphnlosia, Waagen. Salt-Range Fossils ; Brachiopoda. pji. 640-657, pi. ixiii, figs. 2-8 ; pi. Ixiv, 



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

 1889. ProduvliUa {Stnijihahisia), Whiteaves. Contributions Can. Geol., vol. i, ji. 112, pi. xvi, figs. 1, 2. 



Diagnosis. Shell.'* prod uctoid in general form; a cicatrix, u.sually apparent 

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

 bodies by the sul)stance 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 iiinit.s of the central adductors. 



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

 quadrilid 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 



