206 DE. C. T. TEECHMAXN OX [voL Ixxui, 



PIX2S-A sp. (PL XXII, fig. 11.) 



Shell thin, hinge-line straight, marginal outline broadh' rounded 

 behind. A bluntly -angular median ridge passes from the beak to 

 the lower posterior margin. The concentric growth-ripples are 

 well marked and closely set. Length = 80 mm. ; height near 

 posterior margin = 47 mm. 



Locality and horizon. — Eight3^-Eight Valley, Nelson. 

 Carnic. The New Zealand Geological Survey Collection possesses 

 tiwo or three specimens. 



Remarks. — This Pinna rather resembles P. lieeri, J. Boehm,i 

 from the Upper Trias of Bear Island. 



Pectex sp. (PL XXI, fig. 18.) 



Shell thin, with comparatively large ears. A great number of 

 fine, sharp, radial, slighth^-wavy ribs start some distance below 

 the beak, and pass to the margins ; between these a number of 

 exactly similar secondary ribs are developed lower down. Towards 

 the lateral margins the ribs are somewhat more closely set. About 

 five rather coarse ribs are present on the ear. The concentric 

 growth-lines are numerous and closely set, but are fainter than 

 the ribs. Length = 30 mm. ; height =: 28 mm. 



Locality and horizon. — FaJcrocardita Bed, Xugget Point. 

 Carnic. A single cast, from which I made a gutta-percha squeeze. 



Remarks. — I am uncertain whether this is a left or a right 

 valve ; only one ear is well shoAvn, and it seems different from the 

 other one. The shell may possibly be an Aviculopecfen. The 

 absence of ribs on the umbonal portion may be due to erosion 

 during life, or to conditions of fossilization. It recalls in some 

 respects a Pecfen from the Pseudomonotis Beds of Japan figured 

 by Mojsisovics.- 



Li:\iA (Limatula) cf. pichleri Bittner. (PL XXI, fig. 16.) 



1895. ' Lamellibrancliiaten dev Alpiiien Trias' p. 192 & pi. xxii, fig. 21. 



Outline oval and rather narrow, hinge-line wide, posterior and 

 anterior ears about equally developed. Area not visible. It is 

 decorated with fine, somewhat sharp, and wav}'- ribs, which pass 

 from the beak to the margins. This shell agrees with the above- 

 named species, but is less oblique in outline and the ribs are rather 

 m.ore wavy. 



Locality and horizon. — Western slope of Mount Heslington, 

 south of the Wairoa Grorge, Nelson. Carnic. 



Cassiaxella sp. (PL XXI, fig. 19.) 



Shell fairly thick, the beak arched and rolled, projecting above 

 and rather over the hinge-line. The posterior wing is somewhat 



1 Bibliography, 8. p. 38 & pi. v, figs. 4-6. 

 - Bibliography, 33, p. 176 & pi. ii, fig. 9. 



