SuTER. — On Neiu Zealand Mollitscaii Fauna. 267 



tures which recall that genus being evidently adaptive in both 

 groups. I should suspect a relation to Capulus — that is, that 

 it might be some form of Capulus which had taken to living in- 

 side shells, as the unguijormis (Janacus) type of Crepidula has 

 done. I have described, under the name of Hyalopatina, a curi- 

 ous shell which recalls this, but has a more central nucleus. I 

 took it to be related to Umbrella, or something of that sort, but 

 have only the one specimen without the animal. It is finely 

 radiately sculptured, and nearly flat. Whether this and your 

 shell are nearly related I cannot pretend to say, but concho- 

 logically there are points of resemblance. You will find Hya- 

 lopatina figured on plate 30, fig. 5, of Proc. U.S. Nat. Mus., 

 No. 1264." The shell was described by Dr. Dall as Hyalopa- 

 tina rusJiii* 



Fresh specimens of our shell show a dextral spiral smooth 

 protoconch, and a horse-shoe-shaped muscle-scar. The surface 

 is concentrically striated, but there is no radiate sculpture. 

 For this new shell I propose the generic name Neojanacus, and 

 place it in the family Capulidce. I need hardly say that for the 

 j)resent the diagnosis of the species must also be that of the 

 genus. It is to be hoped that the anatomy of the two concho- 

 logically related genera Hyalopatina and Neojanacus may be 

 investigated some day, and their true systematic position settled. 



Type (from 110 fathoms, off Great Barrier Island) in the 

 Colonial Museum. 



7. Scala corulum, Hutton. 

 Scalaria corulum, Hutton, Trans. N.Z. Inst., vol. xvii, 1884 



(1885), p. 332, pi. 18, fig. 22; Pliocene Moll. N.Z., 1893, 



p. 67, pi. 8, fig. 72. 



In sand collected by Miss Marjorie K. Mestayer, of Wel- 

 lington, I found one specimen of this minute shell. It is 

 slightly smaller than Pliocene examples. The number of mol- 

 luscs of our Pliocene found recent is rapidly increasing ! 



8. Crossea cancellata, Tenison- Woods. 

 Proc. Roy. Soc. Tasm., 1877 (1878), p. 122; Tate and Mav, 



Proc. Linn. Soc. N.S.W., 1901, p. 380, pi. 23, fig. 1 (= Del- 



phinula johnstoni, Beddomc, 1882). 



A specimen, kindly identified for me by Mr. C. Hedley, has 

 been in my collection for a number of years, and was obtained 

 in Whangaroa Harbour. It represents a conical variety of the 

 species. This brings the number of New Zealand species of 

 Crossea up to three. 



* Bull. Mu>. Comp. Zool., Harvard CoUtge, vol. xviii, p. 01. 



