62 PALEONTOLOGY. 



MOLLUSCA. 



BHACHIOPODA. 



STROPHOMEmDJE. 



Genus HEMIPRONITES, Pander. 



Hemipronites crenistria, Phillips (sp.). 



Plate 7, fig. 2. 



Spirifer crenistria, Phillips (1836), Geol. Yorks., II, 216, pL ix, fig. 6. 



Spirifer senilis, Phillips (1836), ib., fig. 5. 



Leptcena anomala, Sowerby (1840), Min. Conch., VII, 9, pi. G15, fig. 1 b (not 1 a, d, e). 



Orthis umbraculum, Portlock (1843), Geol. Lond., 456, pi. 37, fig. 5. — De Koninck (1843), 



An. Foss. Garb. Belg., 222, pi. xiii, figs. 4-7 (not von Buch). 

 Orihis Bechei, McCoy (1844), Synop. Garb. Foss. Ireland, pi. xxii, fig. 3. 

 Orthis comata, McCoy (1844), ib., fig. 5. 

 Orthis caduca, McCoy (1844), ib., fig. 6. 



Orthotetes radians, Fischer (1850), Bull. Soc. Imp. Mosc, XXIII, pi. 9, fig. 3.* 

 Leptcena crenistria, McCoy (1855), Brit. Pal. Foss., 450. 

 Leptcena senilis, McCoy (1855), ib., 452. 



? Orthis Keokuh, Hall (1858), Iowa Eeport, I, part ii, 640, pi. xix, figs. 5 a, 6. 

 f Orthis robusta, Hall (1858), ib., 713, pi. xxviii, figs. 5, a, b, c. 

 Streptorhynchus crenistria, Davidson (1860), Mon. Scottish Garb. Brach., 32, pi. i, 



figs. 16-22 ; and in Mon. Brit. Garb. Brach. (1861), 124, pi. xxvi, fig. 1, pi. 



xxvi, figs. 1-5, and pi. xxx, figs. 14-16. 

 ? Streptorhynchus Hallianus and 8. Tapajotensis, Derby (1874), Bull. Cornell Univ., I, 



35 and 37, pi. v. 



The specimens that I have here referred to the above-named widely-dis- 

 tributed and v\^ell-known species, seem to agree in all their external charac- 

 ters with the published figures and descriptions of that form as given by 

 the most reliable European authorities. None of them, however, show the 

 interior, and they are all in a bad state of preservation. 



Locality and position. — Light-colored limestone. Fossil Hill, White Pine 



District ; White Pine County, twenty-five miles northeast of Hamilton ; 



and Railroad Canon, Diamond Mountains. The specimen figured was 



brought by Colonel Simpson from a dark limestone near Camp Floyd. All 



Carboniferous. 



* The name Orthotetes was first proposed by Fischer in 1829 ; but as he neither 

 then, nor at any subsequent time, named, described, figured, or cited any type (until 

 1850), his genus cannot be regarded as antedating Hemipronites, Pander, 1830. 



