368 . Transactions. 



Anomia furcata Sut. 



This finely radially costate Recent species occurs abimdantly in dredge- 

 spoils from Wellington Harbour, where it shows considerable variety of 

 form and outline. A single specimen was obtained in 1919 from the main 

 Mount Brown limestone (D), near the Weka Pass, and can be almost 

 exactly ■ matched, both as regards form and ornament, with a Recent 

 specimen. This is the first record of this species fossil. 



Anomia trigonopsis Hutt. 



All the specimens recorded under this name were determined by 

 Mr. Suter in 1913 as A. walteri Hector. On seeing four specimens from 

 the White Rock River, in South Canterbury, which I collected in 1917, 

 Mr. Suter then expressed his conviction that Anomia walteri was a syno- 

 nym of A. trigonopsis Hutt., and that the latter name should be used for 

 the Recent species. 



Ostrea angasi Sow. 



Concerning specimens from the oyster-beds in the tributary of the 

 Kowhai River notching the cuesta of the Mount Brown beds west of 

 Mount Brown, Mr. Suter remarked that the left valve is strongly ribbed, 

 but nevertheless they are not 0. corrugata Hutt. 



Musculus impactus (Herrman). 



This Recent species is Modiolaria impacta of the Manual. Mr. Suter 

 remarked on a specimen from the Greta beds of the Waipara River that 

 it is a much elongated form, but not M. elongata (Hutt.). 



Mactra dubia (Hutt.). 



1873. Corbida dubia Hutt., Cat. Tert. Moll, p. 18. 

 1911. Mactra chrydaea Sut., Trans. N.Z. Inst., vol. 43, p. 596. - 

 1914. Mactra chrydaea Sut., Pal. Bull. N.Z. Geol. Surv. No. 2, p. 49. 

 When Suter discovered, on revising the type of Hutton's Corbida dubia, 

 that it corresponded exactly with his own Mactra chrydaea, he rejected the 

 earlier name on the ground that it was not figured by Hutton. This is 

 against the International Rules, and Hutton's name must stand, unless it 

 has been preoccuj)ied under Mactra, which is, of course, quite possible. 



BRACHIOPODA. 



Rhynchonellidae. 



Very few specimens of rhynchonellids have been obtained, and the 

 absence of species of this family and of the Terebratulidae, although they 

 are so common in correlative rocks in the Trelissick Basin and at Oamaru, 

 makes the group, unfortunately, less valuable than it otherwise might be 

 for purposes of correlation. The species represented are as follows : — 



Aetheia gaulteri (Morris). 



. Cf. Thomson, Geol. Mag., dec. 6, vol. 2, 1915, p. 389, fig. 1, a, b. ' 



A few specimens have been obtained from the Weka Pass greensand' 

 from various localities, and are of the broad type described as Terebratella 

 sinuata by Hutton. 



