part 3] THE TRIAS OF NEW ZEALA:tfD. 219 



the dental plates being massive and calloused. The hinge-teeth 

 are large and broad, and become ver}^ conspicuous in the crushed 

 specimens. The doi'sal valve appears to have had a large cardinal 

 process and wide dental sockets. The loops seem fairly long, but 

 nothing definite of their structure could be seen. 



Locality and horizon. — Bed c, at Otamita, Hokonui Hills, 

 where I collected three or four well-preserved specimens with the 

 shell on. One specimen is 27 mm. long and 23 mm. wide ; 

 another is 21 mm. long and 18 mm. wide. 



Ke marks. — The shell}^ thickening of the hinge-region of this 

 shell points to its being some pliA^ogerontic form, but of which 

 generic stock I could not determine. The shell has a fibrous 

 structure, and bears dark closely-set punctations. 



Terebeatfla cf. HUis-GARiCA Bittucr. (PL XXIII, fig. 8.) 



1890. ' Brachiopoclen der Alpiiieu Trias ' p. 278 & pi. xxvi, figs. 2-3. 



A single specimen is oval in outline, rather inflated, but not 

 plicate. The area and beak are rather prominent, and the foramen 

 is small. The surface is smooth, with occasional regular growth- 

 furrows. Length=12 mm. ; width=:ll mm. ; thickness =: 6 mm. 



Locality and horizon. — Bed c, Otamita. Hokonui Hills. 

 Carnic. One specimen in my collection. 



Remarks. — This specimen could not be sacrificed in order to 

 investigate the internal structure ; but in outward appearance it 

 resembles the above-named species, which occurs at high Triassic 

 horizons in the Eastern Alps. 



Spirieeei^s-a eragilis Schlotheim. (PL XXIV, figs. 10-12.) 



1890. A. Bittner, ' Bracliiopoden der Alpiiien Trias ' p. 29 & pi. xxxv, figs. 2-4. 



The hinge-line in most examples represents the greatest width 

 of the shell. In the ventral valve the area is high, wide, and 

 triangular, flat or slightly concave, and the beak is but slightly 

 bent over the area. The median sulcus is deep and angular, and is 

 bounded by more or less anguhir folds, on each side of which are 

 three lateral folds, the last one often very small. The area of 

 the dorsal valve is obscure ; the beak is small, and projects but 

 .slightly above the area. The median fold is appreciably higher 

 and wider than the lateral folds, of which there are three or four on 

 each side of it, the last one being very small. Concentric growth- 

 lamella? are prominent, and become foliaceous towards the anterior 

 margin. Length = 16 mm. ; width = 19 mm. 



In another dorsal valve of a slightly-different variety (fig. 12) 

 the outline contracts very slightly beloAV the hinge-line and then 

 widens out again, becoming somewhat wider than at the hinge- 

 line. At the hinge-line the shell is 17 mm. wide, but widens out 

 to 18 mm. below tliat, and is 15 mm. long. 



Locality and horizon. — ^This form is confined to the Kaihiku 

 Beds, in which it occurs commonly in most localities. I collected 



