320 



2. Natica subNose, -^p^j-. nor. Pi. vL, tig, i. 



Shell solid, smooth, shining, hemispha?ric ; whorls four and a- 

 half, transversely hnely-lined ; suture concealed. 



Aperture obliquely lunate, outer lip acute ; columella nearly 

 vertical ; umbilicus wide, a funiculus in the anterior-third, 

 narrow 1)ut elevated, terminating in a moderately large oval 

 callosity, confluent in front with the columella, but separated 

 above by a notch, beyond which the columella spreads slightly to 

 join the outer lip. 



Shelly opercula occur in association with this species at 

 >Spring Creek, which are very similar to those of such species of 

 Natica (s.s.) as N. niillejyunctata. 



Dimensions. — Length, 11 ; breadth, 10 ; length of columella, 

 8 ; width of aperture, 5 : width of umbilicus, 2-55. 



Localities. — Eocexe ; Bird-rock Bluff ! ; Muddy Creek I ; 

 Birregurra (Mulder) ! ; Table Cape I ; Camperdown ! . 



Affinities. — This new species has a considerable resemblance to 

 X. No(E^ D'Orb., N. hemipleres^ Cossmann, and other allied species 

 of the Parisian Eocene. From both it differs by concealment of 

 the suture. In shape it is more like N. Jtemipleres, but its apical 

 whorls are flatter. From X. Xoce it is distinguished by narrower 

 shape, more oblique aperture, and stouter funicular dilatation 

 more anteriorly situated. 



3. Natiea gibbosa, Huttou. PI. vi., fig. 4. 

 Reference. — Trans. X. Zealand Inst., vol. XVIII., p. 334, 



1886. 



" fShell large, solid, smooth, gibbous, the spire almost buried ; 

 tlie body-whorl gibbous posteriorly. Aperture semicircular, the 

 columella callus very large, fllling the posterior portion of the 

 aperture, and eventually covering the whole umbilical region." 



Dimensions. — Length, 39 ; breadth, 37 ; diameter and radius 

 of aperture, 34, 16*5. 



Locality not actually known, but reported " a well-sinking in 

 the Murray Desert ;" the age is doubtfully Miocene. 



Professor Hutton records the species from the Pareora system 

 of New Zealand, and one occurrence from that of Wanganui. 



4. Natiea vixumbilieata, Teuison-WooiU PI. x., tig. 9. 



Reference. — Proc. Roy. Soc, Tasmania, for 1876, p. Ill 

 (1877). 



Synonym. — X. ovata, Tenison- Woods, op. cit., for 1875, p. 17, 

 1876, non Hutton. 



Shell pyriformly oval, solid, smooth, shining. Whorls three 

 and a-half, suture thinly covered ; spire obtuse of two and a-half, 

 rapidly increasing, slightly convex whorls ; the apical-half whorl 

 globose, its tip immersed. Last whorl very large, interruptedly 



