NO. 5 RHYNCHONELLOID BRACHIOPODS — COOPER 89 



Page 



F. Mannia nysti Davidson 22 



Figs. 16-20. 16, Drawing of the dorsal side, ca. X 1. I7> Exterior of the 

 dorsal side, ca. X 7, showing large foramen and long, elevated delti- 

 dial plates. 18, 19, Interior of two brachial valves showing septum 

 with spoonlike plate and long maniculifer crura. 20, Cross section 

 through a complete individual showing relationship of valves, median 

 septum, spoonlike plate, and crura. All from Davidson, Geol. Mag., 

 dec. 2, vol. 1, No. 4, pi. 7, 10-13, 1874. 



Miocene (Diestien), 3 miles east of Antwerp, Belgium. 



G. Hispanirhynchia ? craneana (Dall) 61 



Figs. 21-26. 21-23, Respectively dorsal, anterior, and side views of the 

 holotype showing gently sulcate anterior commissure, X i> U.S.N.M. 

 122861. 24, The holotype, X 2, showing the beak area. 25, The beak 

 region of the holotype, X 4> showing teeth (the deltidial plates prob- 

 ably have been broken away). 26, Posterior of the brachial valve 

 showing spinulifer crura and small outer hinge plate (these struc- 

 tures have been damaged). 



Recent, U. S. Fish Commission Station 3362, mud at 117 fathoms 

 and 36.8 F., off Cocos Island, Pacific Ocean off Panama. 



Plate 22 

 Eohcmithyris, Erymnaria, Notosaria, Aphelcsia 



A. Eohemithyris alexi Hertlein and Grant 30 



Figs. 1-3. 1, 2, Full and partial side views of the cardinalia to show 

 broad, falcifer crura, ca. X 5, hypotype U.C.M.P. 15545. 3, Drawing of 

 the posterior of a pedicle valve, ca. X 4, showing the conjunct deltidial 

 plates and small, round foramen, hypotype U.C.M.P. 15524. 

 Horizon and locality as in plate 20, figures 1-16. 



B. Erymnaria polymorpha (Massalongo) 64 



Figs. 4-9. Sections through a slightly distorted individual, ca. X 4» 



hypotype U.S.N.M. 549384c Sections measured from pedicle beak 



respectively: (4) ca. 1 mm., (5) 1.7mm., (6) 1.95 mm., (7) 2.25 mm., 



(8) 2.6 mm., and (9) ca. 4.0 mm. 

 Lower Eocene (Spilecciano), 400 meters southwest of Purga di 



Bolca, Monti Lessini, Verona, Italy. 

 Figs. 10-15. Sections through another individual showing long crural 



supporting plates, ca. X 4, British Museum (Natural History) B 8088. 



Sections respectively 0.3 mm. apart except figure 13 which is 0.4 mm. 



from figure 12. 

 Eocene, Castelvecchio, Vicentin, Italy. 



C. Tegulorhynchia ( = Notosaria) nigricans ( Sowerby) 48 



Figs. 16, 17. Diagram of the interior of the pedicle and brachial valves 

 of the adult showing pallial sinuses, ca. X T -5, after Williams (1956, 

 fig. 7, No. (4) on p. 276). 

 Recent, New Zealand. 



