304 C. T. Trechmann — Cretaceous Mollusca, New Zealand. 



The spire is almost concealed, and the callosity extends far beyond 

 it and is produced into a finger-like process which is bent away from 

 the spire. The outer lip is much thickened and produced upwards, 

 and the interior portion of the lip is provided with a second channel 

 through excessive growth of the callous margin. I think this 

 variety, Figs. 2a, b, is sufficiently distinct to warrant its illustration 

 for comparison with the more normal type, Figs. 3a, b, and to 

 complete the illustration of the Pugnellid shells which have so far 

 been found in New Zealand. 



Locality. — Wangaloa. Maestrichtian (?). 



Alaria Suteri, sp. nov. (PI. XIX, Fig. 5. x 1£ nat. size.) 



The shell consists of eight whorls which increase gradually in 

 size. The lip of the last whorl is moderately expanded to a simple 

 curved outline and is not digitate. It ends anteriorly in a blunt 

 termination beneath which there is a shallow channel. The posterior 

 margin of the lip does not seem to be channelled, and the labial 

 expansion extends about half-way up the penultimate whorl. The 

 whorls are decorated with rather widely spaced curved ribs, recalling 

 those of Scalaria or of the recent Aporrhais occidentalis, Beck. On 

 the last whorl these ribs reach from the suture to rather beyond the 

 middle line, where they meet a blunt ridge. The whole surface of 

 the outer layer of the shell is covered with very fine parallel raised 

 concentric lines which continue over the ribs. Length about 35 mm. 



The earlier whorls of this shell strongly recall those of a Scalaria, 

 and resemble a fragment of six whorls from Quinquina that 

 Wilckens illustrates 1 under the name 8. araucana, Phil., only that 

 the varices are rather closer together than they are on the New 

 Zealand shell. 



Locality. — Selwyn Bapids. I name this species, which I cannot 

 identify with any described form, after Mr. H. Suter, of Christ- 

 church, the leading authority on the recent Mollusca of New 

 Zealand. 



Aporrhais gregaria, Wilckens. (PI. XIX, Figs. 6, 7.) 



Berichte der Naturf. Gesell. z. Freiburg, Bd. xv, p. 16, pi. iii, figs. 10-13 ; 

 pi. iv, fig. 1, 1907. 

 The shell consists of seven or eight whorls, the last one of which 

 is swollen and expanded. The margin is channelled anteriorly and 

 is not digitate, but extends to a rather sharp projection, which is 

 produced backwards in a direction almost parallel with the spire. 

 Between this projection and the body of the shell the lip has a broad 

 shallow posterior channel. The shell is ornamented with a line of 

 nodes which occur rather above the median line of the last whorl. 

 Beneath them on the last whorl there is a series of much smaller and 

 more numerous nodes that tend to coalesce into a raised ridge. The 

 surface is decorated with a series of more or less continuous parallel 

 raised ridges which are most apparent above the nodes on the 

 penultimate whorl and on the lip. Growth-lines are rather prominent 

 and irregular especially on the last whorl. 



1 N.J. fiir Min., Beil. Bd. xviii, pi. xviii, fig. 1, 1904. 



