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609 



TERTIARY FAUNA OF FLORIDA 



Miocene of North Carolina, at Wilmington, Conrad ; Pliocene of Domi- 

 nica, West Indies, Guppy ; Pliocene of the Caloosahatchie marl, Heilprin; 

 recent in the West Indies. 



This species is easily recognized by its nearly smooth surface and 

 angulated outline. It appears to be rare. 



G-lycymeris parilis Conrad. 11 



Pectimmhcs parilis Conr., Proc. Acad. Nat. Sci., i., p. 306, 184/; Med. Tert., p. 64, pi. 

 36, fig. 2, 184/^ 



Older Miocene of Maryland at St. Mary's River and Plum Point, Tilgh- 

 man's Station, Skipton, and Blake's Cliffs ; Burns and Harris. 



This characteristic species is rarely found in thoroughly good preser- 

 vation. 



Glyoymeris laevis Tuomey and Holmes. 



Pectuncuhis IcEvis T. and H., Pleioc. Fos. S. Car., p. 50, pi. 17, fig. 5, 1857. 

 Peciuiiculus virgmice'Wz.gner (name only) on unpublished pi. 3, fig. 5, Jiiie Bronn, Ind. 

 Pal., i., p. 940, 1848 ; ii., p. 283, 1S49. 



Miocene of Waccamaw, South Carolina, Tuomey, and of Virginia (Wagner). 



This species differs by its smaller size and more wedge-shaped form from 

 G. parilis, and from the young of G. parilis of the same size by its subtrian- 

 gular rather than circular outline, absence of any small ribs, and especially 

 by its broader cardinal area and steeply arched line of larger hinge-teeth. 

 Wagner's name, though earlier, was never accompanied by any description. 

 The plates are still in the possession of the Wagner Institute, and have no 

 names engraved upon them, so the name given by Tuomey and Holmes takes 

 precedence. (See Trans. Wagn. Inst, v., p. 11, pi. 3, fig. 5, 1897.) 



Glycymeris americana Defiance. 

 Pcctwiculus americamis Defi"., Diet. Sci. Nat., vol. 39, p. 225, 1829. 

 P. ptihiinatus Conr., Fos. Tert. Form., p. 17, pi. 2, fig. 2, 1832 ; not of Lamarck. 

 P. lentiforinis Conr., Fos. Tert. Form., 2d edition, p. 36, note, 1837 ; Med. Tert., No. 3, 



p. 64, pi. 36, fig. 2, 1845 ; Tuomey and Holmes, Pleioc. Fos. S. Car., p. 48, pi. 17, 



fig. 2, 1857 (senile stage). 

 P. tricenarius Conr., Med. Tert., p. 63, pi. 35, fig. i, 1845 (= immature shell). 

 P. carolinensis Holmes, P.-PI. Fos. S. Car., p. 15, pi. 3, fig. 4, i860. 

 P. passus Conr., Med. Tert., p. 64, pi. 35, fig. 3, 1845. 

 P. transversus Tuomey and Holmes, Pleioc. Fos. S. Car., p. 51, pi. 17, fig. 6c, 1857 ; not 



of Deshayes, 1835, or Dubois ; (internal cast of young /rt.yjw.?.) 

 P. himulus Conr., Med. Tert., p. 72, pi. 41, fig. 4, 1845. 



