Class—Brachiopoda. 
Body protected by a bivalve shell applied to the dorsal and ventral 
surfaces of the animal. Head none. Mouth with two long cirriferous 
arms; no branchie, respiration being effected by the lobes of the mantle. 
Sexes distinct or united. 
ORDER—ARTICULATA. 
The two valves united by a hinge; the ventral valve generally with 
teeth, which are received into sockets in the dorsal valve. ‘Two adductor 
and two divaricator muscles; the latter running obliquely from the 
ventral valve to the median, or cardinal, process of the dorsal valve. 
FAMILY—TEREBRATULID. 
Shell minutely punctate ; ventral valve with a prominent beak, per- 
forated by a foramen, for the passage of the peduncle. Foramen partly 
surrounded by a deltidium of one or two pieces. Oral appendages 
entirely or partially supported by caicified processes, usually in the form 
of a loop, and always fixed to the dorsal valve. 
Genus, WALDHEIMIA—King. 
Foramen complete ; loop elongated and reflected, attached to the 
hinge plate ; median septum of the smaller valve elongated. 
W. lenticularis, Deshayes, Mag. Zool., 1841, ¢. 41 ; Reeve, Conch. 
Ic. (Terebratula), f- 4. Orbicular, smooth, red; margins even ; beak 
small, recurved; foramen small; deltidium conspicuous; loop elongated, 
reflected. 
Iength, 25 breadth, 17335 height, 1717. 
Cook Strait to Stewart Island. 
Genus, TEREBRATELLA—D’Orbigny. 
Loop elongated, reflected, attached to the hinge plate, and also to 
the longitudinal septum by processes given off at right angles from the 
crura, near the centre of the valve. 
T. cruenta, Dillwyn, Reeve, Conch. Lc. (Terebratula), f. 20; T. 
rubra, Sowerby; T: sealandica, Deshayes. Rounded, ventricose, orna- 
