IlltACIllol'ODA -JACKSON. 185 



1>. :;9.">, tig. 2I'|. ;t]il Davidson [188C, pi. !), fin-. 10]. The process, in fact, Jills the 

 whole of the hinge-trough, verv much as in the Tertiary fossil specimen of Neothyris 

 n///.v (Ilntton) figured by Thomson from ( 'astleditf, \Vanganui [1915 (l), p. 395, 

 lig. 2e]. 



At Station '.Ml, two apical fragments (dorsal, ventral. I'l. I. lig. 2 A. B.) of old 

 shells, presumably belonging to the above species, were also brought up from a depth 

 of 70 fathoms. Both the fragments are of a dirty-grey colour, and may belong to the 

 same specimen. In the fragment of the ventral valve the shell structure appears to be 

 much altered and no piuicta; are visilile. luit in the dorsal valve the pnnctaj are visilile 

 in many places. The muscular impressions in the interior are well-defined and very 

 deep, lint the cardinalia are not quite as massive as in the example from Station 90. The 

 foramen, too, of the ventral valve is much smaller. The fragments are. unfortunately, 

 loo small and imperfect to give a correct idea of the si/e and contour of the specimen. 

 From their general appearance, and from the fact that the muscular impressions 

 contained a quantity of hard grey mud, one might lie justified in regarding them 

 as possililv fossil rather than recent. 



The discoveries made at the aliove two stations are of considerable interest, as the 

 northern range of X. Icnfii-ti/<trix is thereby very materially increased. Hitherto 

 specimens of this species have been recorded from more southern localities. Davidson 

 [188G, p. 52] states that the species lives abundantly, attached to rocks in Foveaux 

 Strait, in 15 fathoms. Ilntton [1880, p. 17<>] and Suter [1913, p. 1074] give 

 Cook Strait to Stewart Island, while Suter in an earlier paper [1911, p. 284] records it 

 Off Oamaru, 35-43 fathoms." 



In a fossil state the species is said to occur abundantly in the younger Tertiary 

 rocks (Wangannian) of the North Island of New Zealand [Mutton, 1873 (2), p. 35 ; 

 Davidson, 1886, p. 52 ; and Suter, 1913, p. 1074]. 



f>. Magellania or Tei-ibntti'lla *j>. PI. I, fig. 7. 



Hob.- Station 90 ; 100 fathoms. 



(Hi.*. Three verv voting live examples of a Brachiopod belonging to the familv 

 Terebratellidse were dredged at this station. 



The generic and specific determination of these presents no little difficulty owimj- 

 to their small size. Thev are certainly to be referred to the sub-family Magellaniinse, 

 and not lo I hat of Dallininie. on account of the peculiar development of the loop. 



In form the shells are longer than wide, being broadest about the middle. The 

 beak is short : foramen large, incomplete; and deltidial plates very small. 



The three specimens arc milk-white in colour, and t heir dimensions, in mm., are 



as follows : - 



1 2 3 



Length . 4 '4 4'7 3' 9 



Breadth . . . 3'6 4-0 3'4 



VOL. II. 2 F 



