NO. 5 RHYNCHONELLOID BRACHIOPODS — COOPER 83 



Page 

 pedicle collar which slides over the umbo of the dorsal valve, X 4, 

 hypotype U.S.N.M. 274136. 



Recent, U. S. Fish Commission Station 381 1, 238 to 252 fathoms, 

 70.5 F.?, south coast of Oahu, Hawaiian Islands. 



B. Frieleia? nit ens (Conrad) = F.f astoriana (Dall) 55 



Figs. 3-6. 3-5, Respectively side, dorsal, and ventral views of the holo- 

 type, U.S.N.M. 3487. 6, Ventral view of another specimen showing 

 broad sulcus and radial lines on exfoliated shell, X I, paratype 

 U.S.N.M. 3487a. 



Miocene, Astoria, Clatsop County, northwest Oregon. 



C. Basiliola elongata Cooper, new species 29 



Figs. 7-21. 7-n, Respectively dorsal, anterior, ventral, posterior, and 

 side views of the holotype, X I, U.S.N.M. 235844a. 12-14, Respec- 

 tively dorsal, side, and anterior views of the holotype, X 2, showing 

 smooth surface, elongate form, and growth lines. 15, Interior of the 

 pedicle valve of the paratype U.S.N.M. 235844b, X 2. 16, Beak region 

 of the same pedicle valve, X 4, showing the fused deltidial plates and 

 the reflected rim around the foramen. 17, Same pedicle valve, X 3, 

 tilted to show the pedicle collar, dental plates, and small genital region. 

 18, Interior of the brachial valve of the same paratype, X 2, show- 

 ing elongated falcifer crura. 19, 20, Side and anterior views of the 

 preceding showing the broad falcifer crura, concave inward, and with 

 serrate distal extremity, the small reflected inner hinge plates, and the 

 broad outer hinge plates, X 4- 21, Interior of the apex of the same 

 brachial valve, X 6, showing the falcifer crura, broad outer hinge 

 plates, small inner plates, and corrugated sockets. 



Recent, U. S. Bureau of Fisheries Station 5146, 24 fathoms on 

 coral sand, Sulade Island, Tapul Group, Philippines. 



Plate 15 

 Frieleia and Eohemithyris 



A. Frieleia halli Dall -» 



Figs. 1-5, 12-14. i-3, Respectively anterior, brachial, and side views, 

 X 1. of a complete specimen showing the narrow sulcus in each valve 

 and the rectimarginate anterior commissure, hypotype U.S.N.M. 

 110830a. 4, Interior of the pedicle valve tilted to show the strong 

 dental plates and small teeth, X 2, hypotype U.S.N.M. 110830b. 5, 

 Apical region of the preceding, X 4, showing the disjunct deltidial 

 plates and incomplete foramen. 12, Brachial valve tilted to show 

 apical chamber of the cardinalia, X 2, hypotype U.S.N.M. 110830c. 

 13, Another brachial valve tilted to show the apical chamber, X 2, 

 hypotype U.S.N.M. 110830b. 14, The same, X 4, showing the 'apical 

 chamber and cardinal process. 



Recent, U. S. Fish Commission Station 4797, 682 fathoms, off 



Avacha Bay, Kamchatka. 



Figs. 6-1 1. 6-8, Respectively full, partial side, and tilted views of a 



brachial valve showing cardinalia and median septum, X 2, hypotype 



U.S.N.M. 549348a. 9. 11, Apical part of another brachial valve in full 



