Tdlinn.\ PELEl'YPODA. 953 



, North and South Islands, in 5 to 10 fathoms, sandy bottom. 

 Maori. Hohe-hohe (testc Hutton). 

 Fossil in the Miocene and Pliocene. 



8. Tellina glabrella, Deshayes. 1855. Plate 59. tig. [5. 



Tdlimi (jlabrella, Desk., P.Z.S., 1854 (1855), 3()(> ; Conch. Icon., xvii, I8t>>. 

 f. 29(5 ; Crit. List, 42 ; Ereb. & Ter.. 5, pi. 2, f. 7 ; Hutton, J. de Conch., 

 xxvi, 47 ; M.N.Z.M., 144 ; P.L.iS. N.S.W., ix, 520. 



Shell ovato-trigonal, transverse, thin, subequilateral, yellowish- 

 white, compressed, obsoletely concentrically striated. Beaks at the 

 middle, acute, not much raised. Anterior end semielliptical, convex 

 above and below ; posterior end attenuated, trigonal, above straight 

 or slightly concave, declining, distinctly angled on meeting the basal 

 margin, which is straight in the middle, arched at the ends. Sculp- 

 ture consisting of very fine, dense, unequal concentric lines, and faint 

 but under a lens distinctly visible radial stride ; obsolete folds on the 

 posterior part of the valves, where a number of the concentric lines 

 are sharply raised. Epidermis thin, horny, slightly iridescent. Colour 

 yellowish-white, with concentric bands of whitish, umbones light 

 orange. Interior yellow, the margins white, shining, with a distinct 

 anterior and several posterior radiate rays. Hinge : Right valve 

 with 2 cardinals, the posterior bifid, 1 distinct lateral at some dis- 

 tance from the anterior cardinal and 1 smaller lateral behind the 

 nymph ; left valve with 2 cardinals and an obsolete anterior lateral, 

 more distinct in adult specimens. Ligament moderately long, strong, 

 nymphs prominent. Adductor-scars unequal, the anterior high and 

 narrow, the posterior smaller, subquadrate. Pallial sinus large, 

 linguiform, gibbous above, narrowly rounded in front, and nearly 

 reaching the anterior scar. 



Length, 29 mm. ; height, 17 mm. ; diameter, 6 mm. (type). 

 Length, 50mm. ; height, 31mm. ; diameter, 11 mm. 



Type in the British Museum. 



Hab. North and South Islands, in 4 to 10 fathoms. 



Fossil in the Pliocene. 



9. Tellina Spenceri, Suter, 1907. Plate 59, tig. 16. 



Tellina (Angttlus) tipenceri, Suter, P. Mai. S., vii, 1907, 212, pi. 18, f. 9. 

 Shell elongately oval, thin, compressed, rostrate and but slightly 

 flexuous posteriorly, subequilateral, with fine concentric striae, white. 

 Beaks small, approximate, sharply pointed, smooth and shining, a 

 little anterior or median. Anterior end regularly rounded, nearly 

 straight dorsally, with a slight fold from the beaks to a little above 

 the middle. Posterior end rostrate, with a distinctly raised fold from 

 the beaks towards the posterior angle, slightly flexed to the right ; 

 the dorsal margin excavate below the ligament, descending straight 

 to the rostrum, and slightly sinuate below it ; basal margin broadly 



