Section ^iiiieocorbula Oossmann. 



CORBULA ( 0UTT;0G0R-3ULA ) SEHI , A Jail. 



? Oorbula c ubsmla-na C-upoy, 1874, Heol. Ilag. , decade 2, vol. 1, 



p. 441 (ex oarte, non d '01-131,^13-, 1855), 

 C orb Vela ( aieocor-oula ) serlcea Dall, 1893, Trans, '.'/agner Free 



Inst. 3ci., Philadelphia, vol. 5, pb . 4, p. 848; 1900, 



pt. 5, pi. 36, fig. 8. 

 ? Oorhulc serisea Dall, Brovrn and Pilshr: , 1911, Proc. Acad. 



-at. 3ci., Philadelphia, vol. G5, p. 371. 



Description .- "Shell much like the precedinp* species 0. 

 seminella Dall in general form, hiit slightly ] _• and with 



less emargination 'beiie? th the rostrum, the sculpture, hovzever, 

 is quite different, heing of very numerous, eciial, fine, sharp, 

 close-set rihs, the interspaces crossed by fine, close, sharp 

 radial striation, y;hich at ci. -\. istinguishes it from aiiy of the 

 allied si^ecies. Both valves are similarly sci^Lptured, the sculpture 

 "becoming obsolete on the bt.?ks. Ion. 4.5, alt. 5.5, diara. 2.5 

 mm. "^^ largest vr-lve measures 5.4 by 4 mm." 



"As the ri e not overrun by the radial sculoture, the 



effect is not reticulate. O. lavelleana Orbirny, of the recent 

 Aiitillean famia is said to be radially str\'^'"f--\ but I have not 



