132 Transactions. — Zoology. 



lirated and transversely ribbed. Hinder parts of the whorls not concave ; 

 twenty transverse ribs on the penultimate whorl, and about the same 

 number on the body-whorl, but difficult to count because partly obsolete, 

 especially anteriorly ; spiral lirae about seven on the spire whorls, subecraal, 

 body-whorl with fifteen or sixteen. Canal moderate ; aperture elongately 

 oval, posterior sinus very slight. 



Length '53 ; diameter -2 ; length of aperture "17 inch. 



This species is distinguished from P. buchanani by the whorls being less 

 carinated, not concave posteriorly, and the suture not margiued ; the recent 

 specimens are not much more than half the size of the fossils from Awamoa. 



Adeokbis (?) petterdi, Brazier (Fossarina). Jour de Conch., 1864. 



I have received a specimen from Mr. T. F. Cheeseman, who informs me 

 that he found four individuals at Waiwera, and that Mr. C. Mathews had 

 also collected it at Omaha and Matakana. It is common in Tasmania. 



Sbell depressed, of three or four rapidly -increasing whorls, rimate, 

 smooth, very faintly spirally striated; white, with zig-zag brown markings ; 

 aperture broader than long; yellowish, and not pearly inside. Operculum 

 multispiral. Dentition rhipidoglossal. 



I have examined an animal sent me from Tasmania by Mr. Petterd, and 

 find that it belongs to the Trochinm. 



Acmjea flammea, Quoy and Gaimard. Voy. Astrolabe, Zool. iii., p. 354, 

 pi. 71, f. 15-24 {Patelloida). Tenison- Woods, Pro. Boy. Soc. Tasmania, 

 1876, p. 51. 



Shell small, oval, depressedly conical, finely radiately striated ; apex 

 about one-fourth the length of the shell from the anterior end, pointed and 

 hooked : shell thin, semitransparent, pale yellowish-brown, ornamented 

 with irregular, usually more or less radiating, lines of brown ; interior 

 silvery. 



Length -25 to -3 ; breadth -2 to -23 ; height -08 to -1 inch. 



Animal white, the margin of the mantle fringed. 



This species is common on rocks and on other shells throughout New 

 Zealand. It is also found in Tasmania, Australia, and the Island of Guam. 

 Mr. Tenison- Woods describes the shell as " somewhat solid," but with us it 

 is always very delicate and thin. 



AcmjEa conoidea, Quoy and Gaimard. Voy. Astrolabe, Zool. iii., p. 355, 

 pi. 71, f. 5-7 {Patelloida). 



Shell small, broadly oval, high, conical, smooth ; apex rather anterior, 

 blunt, usually rounded. Colour usually brown, but sometimes nearly white 

 with brown radiating streaks ; interior above the muscular impression dark 

 or pale brown or blotched, margin dark brown, sometimes rayed with pale 

 brown. 



