364 
MANUAL OF THE MOLLUSCA. 
Distribution, 3 species. 
nullipore mud. 
Mediterranean 90—250 fathoms on 
(Forbes.) Vigo Bay; Falkland Islands. 
Fossil, 126 species. 1 
Deyonian—. World-wide. 
Sub-genera. Terebratulina (caput-serpentis), D’Orbigny. (Pl 
XY., Fig. 3.) Fig. 148. 
Shell finely striated, auriculate, 
BAG 
~ oa 
a 
i 
yi 
+ 
| mill 
Fig. 148. Dorsal valve. Animal, 
deltidium usually rudimental; foramen incomplete; loop 
short, rendered annular in the adult by the union of the oral 
processes. Distribution, 6 species. United States, Norway, 
Cape, Japan. 10—120 fathoms. Fossil, 22 species. Oxfordian—. 
United States. Europe. 
Waldheimia (australis), King. Pl. XV., Fig 
5, 6), Figs. 145, 149, 150 
4 (p. 5, Figs. 
Fig. 149. Dorsal valve 
Figo, 150. Ventral valve. 
Fig. 149. 7, cardinal process; zt’, dental sockets; p, hinge-plate; s, septum ; ¢, cruia 
of the loop; /, reflected portion of the loop; m, quadruple abductor-impression 
3 
Fig. 150. 7, foramen; d, deltidium; ¢, teeth; a, single abductor impression; 7, car- 
dinal muscles; z, accessory muscles; p, pedicle muscles; v, position of the vent; z 
attachment of pedicle-sheath. 
Shell smooth or plaited, dorsal valve frequently impressed 
foramen complete; loop elongated and reflected 
smaller valve elongated 
; septum (s) of 
. Distribution, 9 species. Norway, 
Jaya, Australia, California, Cape Horn. Low water—100 
