474 Transactions. — Geology. 



Art. LII. — Bevision of the Tertiary Brachiopoda of New 



Zealand. 



By Captain F. W. Hutton, F.K.S. 

 [Read before the Philosophical Institute of Canterbury, 3rd August, 1904.] 



Plates XLV. and XLVI. 



Terebratulina suessi. 

 Terebratulina, sp., Suess, Eeise der " Novara," Palae., p. 57, 

 taf. ix., fig. 6. T. suessi, Hutton, Cat. Tertiary Moll, of 

 N.Z., p. 37. T. oamarutica, Boehm, Zeitschr, d. Deutsch 

 Geol. Ges. 1904, p. 148, pi. xv., f. 1-5. 



Shell ovate, finely radiately striated ; valves subequal ; 

 foramen large, incomplete. Ventral valve with a slight but 

 broad depression, sometimes almost obsolete. 



Length, 10 - 23 ram. ; width. 7 - 17 mm. ; thickness. 

 4-12 mm. 



Localities* — Curiosity Shop; Kakanui. 



The annulus of the loop is nearly circular and rather large. 

 The shape of the shell is generally ovate, but variable. The 

 striae occasionally bifurcate. In shape it is hardly to be dis- 

 tinguished from T. scolder i of Tate, but the striations are 

 rather stronger, and the foramen appears never to become 

 complete. 



Terebratula concentrica. Plate XLV., fig. 1. 

 Waldheimia concentrica, Hutton, Cat. Tertiary Moll, of xs'.Z.. 

 p. 35. T. bulbosa, Tate, Trans. Phil. Soc. Adelaide, 1880, 

 p. 6, pi. vii.. fig. 5. T. oamarutica, Boehm, Zeitschr. d. 

 Deutsch Geol. Ges., 1904, p. 149, pi. xv., f. 6-7. 



Shell ovate, the greatest breadth in front of the middle ; 

 with concentric growth- lines, or smooth. Both valves con- 

 vex, the ventral more so. Commissure straight at the sides 

 and with a slight dorsal sinuation at the anterior end (some 

 times missing). Beak thick, obtusely keeled, or rounded, 

 slightly produced ; foramen complete, round, very large 

 Deltidium distinct but small. Loop rather long, stout, like 

 that of T. vitrea. 



Length, 37 - 42 mm. : width, 28 - 29 mm. ; thickness, 

 21-23 mm. 



Localities. — Kakanui ; Broken River ; Waipara. Cobden 

 limestone. 



Differs from the next species in the usually keeled beak, 

 the upward sinuation of the commissure, and in being more 

 attenuated posteriorly. 



* These refer to the localities in the Canterbury Museum only. 



