755 



Prod. 



Productella striatula, Hall, Pal. N. Y., Vol. 4, 1867, page 



FalMI, 

 VolJV 

 J^. 177. 



148, 177, plate 25, ligs. 14 to 21. Chemung, For the internal 

 difference between this and P, onusta^ see the wood cuts on 

 page 148 given by Hall in his discussion of the genera Fro- 

 ductus and Strophalosia. He calls P, striatula a neat and 

 well marked species, more delicate than P. rarispina^ and 

 with' slender spines; shell thin and easily exfoliated, exposing 

 then a finely striated surface beneath.* Found in some limy 

 beds of Chemung in western New York. — In Pennsylvania rec- 

 ognized by 0. E. Hall in Carll's and Randall's collection at 

 Warren, and Sherwood's in Tioga county; Chemung upper 

 strata, VIII g. 



Productella truncata. ( Proauctus truncatus ; Stro- 



vni -fa 



phomena pustulosa)^ Hall, Geology of Fourth Dis- 

 trict, N. Y., 1843, page 180, fig. 71, 4. Marcellus. 

 In Pennsylvania, Perry county,Barnett's mill, Clay- 

 pole's specimen 5-106 (two), from Hamilton upper 

 shale, VIII 5, c. 



Productella ? 855-52; 856-27,-32,-38; 858-14 ; 859-8; 



860-21, 72 (slab covered with poor specimens), -89; 861-1 

 (large, comparatively narrow), -2 (three large ones), -7 (large, 

 with long spines, like the last), -17, 21 c (several casts), -28 g 

 (poor), -30 (large narrow form, like 861-1), -38; 867-1 (poor) ; 

 870-22 (poor); 872-27 (obscure); 881-4; 883-53, -64 (i (very 

 poor), -77 ; 884-1 (nine blocks, with many examples ; also Rhyn- 

 chonellas), 884-2 (five), 884-3 (seven), 884-4 (two, flat forms) ; 

 891-1 B (large, slightly convex, with ridge along the inside), 

 891-1 G (small, convex), 891-3,-4 (flat, needle ridge),.-5, -7 

 (small, gibbous). All from Chemung. VIII g. 



