Prod. 



760 



port, ^^^S^ Burlington limestone, XL — Recognized by 0. E. 

 Hall (MS. Kept. Dec. 30, 1876} in Hon. J. F. Mansfield's col- 

 lections at Cannellton, Beaver Co., Pa. — XIII? 



Productus hirsutus. See Productella hirsuta. VIII g, 



Productus indianensis. » (Hall. Trans. Alb. Inst. Vol. 4, 

 yfj 7. 1856. Whitfield, Bull. 3, Amer. Miis. 



' - Nat. Hist., N. Y. 1882, plate 6, figs. 6, 



7, enlarged twice, largest type speci- 

 men. Kesembles Murchison's En 

 lnZ^'''^^/SSi.^^^S/^'^' glisii Productus sichaculeatus.hvin^Y' 

 rower, etc., and spine bases much smaller.) CoUett's Ind. Kt. 

 1882, page 326, plate 29, figs. 6, 7. Spergen Hill, Ind. Sui 

 carboniferous. XI. 



Productus longinpinus. Sowerby's European shell, char- 

 acteristic of the American coal 



ig^v;::-£-Li^ IffiiiiiS^ smallest. Collett's Indiana Rt., 



hul."^'^^"=^io-'i-^'''^^^^^|.24-i 1883, page 127, plate -4,figs. 10^ 

 11, natural size., usual form ; but the varieties of this shell are 

 great. Twelve counties of Indiana have yielded this shell. 

 In Pennsylvania, it first appears in the Mercer louver and tipper 

 limestones, XII (Q, 68, Q2, 46, 57, 61, 78, 100, 106, 146); then 

 in Ferriferous limestone (K, 346; Q, 193, 196, 200, 267), espe- 

 cially abundant on the Beaver river, in Pulaski township (Q2j 

 46, 106 ; Q3, 25) ; then in the Brush creek limestone. Ind. town. 

 Allegheny Co. (Q, 68, 154) ; then in the Pine creek limestone 

 (Q, 33, 62) ; finally and abundantly in Barren measure Green 

 crinoidal limestone (K, 80; K3, 309.)— X//, XI I L XIV. 



Productus magnus. Meek and Worthen, Proc. Acad. Nat. 

 Sci, Phila., 1861, Keokuk limestone.^ XL — Seen by 0. Hall (MS. 

 Rt. 1876), in Mansfield's Collections at Cannelton, Beaver Co., 

 Va.—XIII. 



Productus muricatus, Norwood and Pratten, Iowa, Acad. 



Nat. Sci. Phila. Aug., 1851, plate 1. fig. 8. 

 \ \ rmw^?^^-^^^^. Q^^^ g^^l^ Kentucky, Vol. 3, 1857, page 



573, plate 9, fig. 6. Characteristic and 

 abundant in roof of Coal 9, at Carlow 

 mines. Union Co., Ky., and Lewisport- 



