1 86 NEW YORK STATE MUSEUM 



Hall and Clarke introduced the subgeneric term Pholidostrophia/ Other 

 representatives of this group are known, namely an undescribed shell from 

 the Onondaga limestone of New York and Ohio probably the S t r o p h o- 

 mena lepis Bronn of the Eifel Middle Devonic. The Gaspe shell 

 doubtless belongs in this association but we cannot, with the evidence before 

 us, restrict the term Pholidostrophia to shells in which the surface is wholly 

 without radial lines. 



An average specimen of S. h u n t i measures along the hinge, 1 1 

 mm in length 6.5. 



Localities. Along the shore at Fruing's and Lehuquet's, Grande Greve. 



Specific name. T, Sterry Hunt, for years the distinguished chemist 

 and mineralogist of the Geological Survey of Canada ; author of a report on 

 the petroleum of Gaspe. 



Stropheodonta patersoni Hall protype precedens nov. 



Plate 35, figures 3-13 



See S. patersoni Hall and S. inequiradiata Hall. Palaeontology of New- 

 York. 1867. 4: 87, 90 



Professor Hall noted in his description of the two species cited above, 

 both from the Schoharie grit and Onondaga limestone, that while in normal 

 forms distinction is readily made, many shades of transition in style of 

 surface sculpture are found. The shells are both regularly convexo-concave 

 species with denticulate hinge and with the surface ornament fundamentally 

 consisting of fine elevated and fasciculate striae each pair of larger ones in- 

 cluding 6 to 10 finer, multiplication of the larger consisting in the superior 

 development of the median stria in the fascicle. These lines are finely 

 reticulated by concentric elevated striae. Superinduced on this ornament 

 are, as a species character, in S. patersoni, concentric discontinuous 

 corrugations affecting chiefly the intervals between the primary striae. 

 These occur faintly and sporadically in S. inequiradiata. Billings 

 figures [Paleoz. Foss. pi. 2, fig. 3] from Division i of the Gaspe series, 

 between Cape Rosier and Grande Greve a specimen identified as S t r o p h . 

 varistriata Conrad in which such corrugated exterior is present, and 

 we have already commented on this structure. He also insists that there is 

 no distinction between this shell (and species) and Stroph. inequira- 

 diata except that the former is of smaller size. Comparison of typical 

 material representing these species however demonstrates that notwithstand- 

 ing the common possession of the corrugations, S t r o p h . varistriata 

 is not only smaller but more squarish in outline with nearly rectangular 

 cardinal angles (S. rectilateralis being one of Conrad's synonyms), 



I Palaeontology of New York. 1892. v. 8, pt i, p. 287. 



