TRANSACTIONS OF WAGNER 

 I 5 l8 



TERTIARY FAUNA OF FLORIDA 



lamina, and a low, obscure anterior lamina parallel and close to the median ; a 

 lithodesma is present. 



Subgenus Heteroclidus Dall (nov.), 1903. Type Clidiophora punctata Conrad. 



Like Clidiophora, but the long left posterior lamina absent, the right pos- 

 terior lamina short, and the low anterior right lamina produced ; both the 

 anterior laminae end in front of the anterior adductor scar ; lithodesma present. 



Pandora and Kennerleyia are widely distributed, Ccelodon is exclusively 

 oriental, Clidiophora chiefly American on either coast, and Heteroclidus Cali- 



fornian. 



/ 



Pandorella, Trutina, and Calopodium are exact synonyms of Pandora s. s. 



Pandora (Kennerleyia) dodona n. sp. 

 PLATE 57, FIGURE 25. 



Uppermost Oligocene sands of -Oak Grove, Santa Rosa County, Florida ; 

 Burns and Aldrich. 



Shell small ; left valve very convex, when adult somewhat twisted, attenu- 

 ated distally, with a slender, blunt rostrum ; anterior area defined by an obso- 

 lete sulcus and with the central area smooth ; posterior dorsal area bounded 

 below by a single radial thread and somewhat concentrically wrinkled, hinge- 

 plate normal, disk with the muscular impressions strongly marked ; right valve 

 slightly concave, with a strong posterior dorsal keel, concentrically striated 

 and with a few radial incised lines. Length 12.5 (to 15.0), height 5.2, diameter 

 2.0 mm. 



This species is somewhat like P. carolinensis Bush, but more slender and 

 more enrolled ; in fact, in the latter respect our other species, recent or fossil, 

 approach it closely only exceptionally. 



i 

 Pandora (Kennerleyia) arenosa Conrad. 



Myadora arenosa Conrad, Proc. Acad. Nat. Sci. Phila., Hi., p. 21, 1848. 



Pandora arenosa Conrad, Journ. Acad. Nat. Sci. Phila., vii., p. 130, 1834; Fos. Medial 



Tert, p. 2, pi. i., fig. 3, 1838. 

 Pandorella arenosa Conrad, Proc. Acad. Nat. Sci. Phila., xiv., p. 572, 1863 ; Am. Journ. 



Conch., iii., p. 269, 1867, olim; Meek, Checkl. Mioc. Fos. N. Am., p. 12, 1864. 

 Pandora carolinensis Bush, Trans. Conn. Acad., vi., pt. ii., p. 474, 1885. 



Miocene of the York River, Virginia, near Yorktown, Harris ; upper Mio- 

 cene of Duplin County, North Carolina, at Magnolia ; Pliocene marls of Shell 

 Creek, Florida ; living off Cape Hatteras in abundance in seven to forty-eight 

 fathoms, United States Fish Commission. 



