No. 2314. LIST OF RECENT BRACUIOPODA—DALL. 321 



loop covered by a densely spicalose membrane. The genital sinuses 

 were imperceptible. 



GRYPHUS WYVILLI Davidson. 



Terebratula wyvilli Davidson, Proc. Roy. Soc, vol. 27, p. 436, 1878. 

 Terebratula wyvillii Davidson, Challenger Bi&ch., p. 27, pi. 2, figa. 7-9, 1880. 

 Lyothyris xvyvillii Davidson, Mon. Rec. Brach., pt. 1, p. 15, pi. 2, figa. 8-14, 1886. 

 Lyothyrina wyvillii Tiaia,, Bull. Mus. Comp. Zool.. vol. 43, No. 6, p. 444, 1908. 



Type locality. — As, Davidson appears to have selected no special 

 locality among those he enumerates in the Challenger Report, I 

 choose station 299, off Valparaiso, Chile, in 2, 160 fathoms, gray mud, 

 bottom temperature 34° F. 



This should not be confused with Waldheimia wymllii dredged by 

 the Challenger in the same haul, or Terehratulina (Dyscolia) wyvillii 

 both described by Davidson. The brachia though very short ex- 

 hibited both median and lateral coils. 



GRYPHUS CLARKEANA Dall. 



Liothyrina clarkeana Dall, Proc. U. S. Nat. Mus., vol. 17, p. 718, pi. 31, figs. 9, 10, 

 1895; Bull. Mus. Comp. Zool., vol. 43, No. 6, p. 443, Oct., 1908. 



Type locality. — Gulf of Panama, 1,175 fathoms, U. S. Bureau of 

 Fisheries, bottom temperature 36° 8 F. 



Only these two specimens are yet known. 



Section CNISMATOCENTRUM Dall. 



Crural plates appressed solidly to the valve below the dental 

 plates, the loop thus appearing to spring from the valve instead of 

 from the hinge; a short median ridge below the loop. 



Type. — Gryphus sakhalinensis Dall. 



GRYPHUS SAKHALINENSIS DalL 



Terebratula (Liothyris) sakhalinensis Dall, Nautilus, vol. 22, No. 3, 1908, p. 28. 

 Type locality. — Okhotsk Sea, off the southeast coast of Sakhalin 

 Island, in 64 to 100 fathoms, bottom temperature 30° F. 

 144382— 20— Proc.N.M.vol.57 21 



