Hemi. 



282 



Hemipronites crassus. ( Orthisina crassa^ Meek & Hay- 

 den, Proc. 

 Acad. Nat. 

 Sci.Philada. 

 H, crassus 

 of Meek & 

 II a y d e n , 

 Pal. Upper 

 Missouri 

 18(J4, plate 

 1; also U.S. 

 Geol. Surv. 

 of Nebraska 

 1872, fig. 10, 

 plate 10, fig. 

 1.— Note. 

 Pander's 

 genus Herri' 

 ipronites is 

 now known 

 as Strepto- 

 rliynchus.- — 



The English Hemipronites crenistria of Phillips is the same as 

 this American H, crassus. The OrtJiis rohusta of Hall's Iowa 

 report differs from it only in being larger. CoUett's Indiana 

 Eeport of 1883, page 129, plate 26, figs. 4, 5, belly and back, 

 natural size ; figs. 6, 7, outside and inside of belly (ventral) 

 shell ; figs. 8, 9, outside and inside of back (dorsal) shell ; fig. 

 10, 11, inside of belly and back shells of larger size. — Coal 

 Measures of the West. XIII. Abundant in CarlPs 3rd Mtn. 

 Sand, Warren co., Pa. (IIII, p. 273) Waverly^ X; and the same 

 in the Fayette and Westmoreland Co. gaps. (K3, 311) lov). 

 Carl. X. — In Beaver, Lawrence and Mercer cos., in Ferr. Lime. 

 All. Series, (Q, 62, 200; QQ, 46, 106; Q3, 25; V, 147) XIIL— 

 In W. Virginia, Morgantown, in Deckers Cr. shale under Ma- 

 honing SS. (L,36) XIIL — In Fayette and West, cos., abundant 

 in green and black Grinoidal limestones., Pitts. Series. (K, 80; 

 K3, 309 ; L, 34) B. M. XIV. 



Hemipronites cre^iistria. English. See Hemipronites cras- 

 sus above. — XIII XIV. 



