Marshall. — Some New Fossil Gastropods. 121 



Each whorl disthxctly convex and decreasing rapidly in size. Spire only 

 half the size of the aperture. Suture rather deep. Aperture ovoid, nar- 

 rowing behind, nearly straight except for an indentation near the base. 

 A wide callosity borders the whole of the outer lip. Inner Up callous. 

 Columella with 2 prominent folds near the base. In one specimen some 

 denticulations can be distinguished on the inner border of the outer Up. 



Height, 6 mm. ; width, 5 mm. 



Six paratypes in the Otago University Museum, Dunedin. 



Locality. — Wangaloa, South Otago. 



Specimens sent to the National Museum, Melbourne, with the request 

 to determine whether the mollusc was Avellana or Eriftycha were returned 

 with the statement that they should be classified with Eriptycha. Mr. H. 

 Suter has, however, kindly examined the specimens, and he agrees with me 

 that they belong to Avellana. 



The genus Avellana does not appear to have been collected outside of 

 European coimtries previously. Thus Cossmann records it from the Albian 

 and Cenomanian of France, Belgium, and England. It does not appear to 

 have been collected from horizons higher than this. The closely allied 

 Eriptycha, which is typical of the Upper Cretaceous, occurs somewhat widely 

 in the highest Cretaceous of the circum-Pacific region — viz., CaUfornia, 

 Chile, and Patagonia ; and Mr. F. Chapman kindly informs me that an 

 undescribed species has been found in the Miocene of Victoria. 



Avellana curta n. sp. Plate XI, figs. 8, 9. 



Shell small and globular. Sculpture of body-whorl consisting of about 

 27 spiral ribs of approximately equal size, flat on the top. Interstices 

 rather narrow, and minute narrow transverse ribs cross the interstices. 

 Sculpture of 2nd whorl 7 spiral ribs. Spire very short, consisting of 

 4 whorls, each of which is very slightly convex. Suture not strongly 

 marked. Aperture oval. Callosity of the outer lip broad, but appa- 

 rently without denticulations on its inner surface. Inner lip callous, but 

 the form of the columella is not distinct. 



Height, 9 mm. ; width, 7i mm. 



Three paratypes in the Otago University Museum, Dunedin. 



Locality. — Wangaloa, South Otago. 



This species is very similar to A. tertiaria from Hampden, but is 

 distinguished from it by its larger size, shorter spire, more irregular 

 ornamentation, and by the absence of denticulation of the outer lip. 



Avellana tertiaria n. sg. Plate XI, figs. 10, 11. 



Shell small, nearly globular. Sculp tu.re 29 flat spiral ribs on the body- 

 whorl. They are of approximately equal size, though somewhat narrower 

 near the base. Interstices narrower than the ribs, and crossed by numerous 

 minute transverse ridges. Spire short, consisting of 4 whorls about J the 

 length of the aperture. Ten small spiral ribs in the 2nd whorl. Outer lip 

 with a callosity 1 mm. wide, marked with 7 striations parallel to its margin. 

 Outer lip marked internally with 13 denticulations, three of which are much 

 larger than the others. Inner lip callous, but the callosity extends only 

 slightly from the aperture. Columella nearly straight, with 2 narrow folds 

 near the base. 



Height, 7 mm. ; width, 6 mm. 



Holotype, Otago University Museum. 



Locality. — Onekakara Beach, near Hampden. 



