196 DR. C. T. TJfECHMA>7X OX [vol. Ixxiii, 



various distances from the beak, and near the margin they attain 

 ahnost the strength of the primary ribs. This form seems to re- 

 semble in every way the typical Alpine Jlonotis salinaria. 



Tar. IXTEEMEDIA, noy. (PL XX, llg. 1.) 



This seems to be a fairly-constant A'ariety : the left yalve is 

 rather strongly arched, and has sixteen nan•o^y and very regular 

 primary" ribs, between each of which in one specimen that I examined 

 fainter secondary ribs occur at various distances fi*om the beak. 

 In another left valve the primary'- ribs are rather broader, and 

 become nodose towards the lower margin, owing to interruption by 

 the growth-lines; and very faint, in some cases scarcely perceptible, 

 secondary ribs occur between the primary ribs, commencing about 

 halfway between the beak and the lower margin. Length=46 mm. ; 

 height =37 mm. ; depth of left valve = l-i mm. 



Tar. HEMISPHEEICA, nov. (PI. XX, figs. 2 & 3.) 



Shell small, the left valve very strongly arched and rounded; the 

 beak is inflated, and projects beyond the hinge-line, which is very 

 •short. The margin is rounded and contracted in front, but rather 

 produced behind. There are about seventeen regular, low, rounded 

 primary ribs, more or less equal in size, between which an occasional 

 very faint secondary rib occurs towards the lower margin. A right 

 valve is rather strongly arched, but much less so than the left; the 

 beak is pointed and not inflated; and the hinge-line is short, with a 

 faint posterior wing. There are about fifteen primary ribs, more or 

 less equal in size, but rather irregularly spaced ; and in the two 

 widest spaces about the middle of the shell a \qyy faint secondary 

 rib occurs. A left valve is 22 mm. long, 22 mm. high, and 12 mm. 

 deep. A right valve is 23 mm. long, 19 mm. high, and 9 mm. deep. 



Localit}^ and horizon. — Okuku (Ashley County), in the 

 Canterbmy Alps, in limestone. Horizon uncertain, Carnic or Xoric. 

 All the specimens that I examined belong to the New Zealand 

 ■Geological Survey, and were collected by Mr. McKay in 1879. 



Pemarks. — Jlonotis salinaria is generally a Noric fossil, but 

 occurs in Europe also in Carnic beds. It ranges from the Alps and 

 Sicily through Afghanistan, Baluchistan, the Pamirs, Himalayas, 

 and Borneo to the Moluccan Islands, and is now recorded for 

 the first time from Xew Zealand as distinct from the genus 

 Pseudomonotis. 



Daoxella ixdica Bittner. (PL XX, fig. 7, & PL XXI, fig. 5.) 



1899. 'Trias Brachiopoda & Larnellibraiicliiata ' Pal. Ind. ser. 15, vol. iii, pt. 2, 



p. 39 & pi. vii. fiss. 4-11. 

 1907. J. Wamier, 'Triaspetiefak-ten d.T Molukken ' p. 202 & pi. ix, figs. 8-9, 



pi. X, iigs. 2-3. 



The outline is rounded so far as one can ascertain, since most of 

 the specimens are broken jn-ior to fossilization. The hinge-margin 

 is straight: the beak projects slightly above it, and is situated about 



