Realia.] GASTROPODA. 195 



KEY TO GENERA. 



1. Peristome continuous, double . . . . REALIA. 



2. Peristome discontinuous, straight or expanded, a more or 



less distinct keel round the umbilicus . . . . OMPHALOTKOPIS. 



Genus 1. EEALIA, Gray, 1850. 



Realia, Gray, P.Z.S., 1849 (1850), 167. Type : R. egea, Gray. Realia, Gray : 

 Hedley and Suter, P.L.S. N.S.W. (2), vii, 622; Suter, J. de Conch., 

 xli, 225 ; Kobelt, Jahrb. Nassau. Ver. f. Naturk., lix, 49. Liarea, Gray. 

 Cat. Phaneropn. Br. Museum, 1852, 217. 



Animal having the tentacles long, cylindrical ; eyes at the outej 

 base ; mouth proboscidiform ; foot elongate, tapering posteriorly. 

 There are no jaws. Radula with multicuspidate teeth. 



Shell small, turriculate, smooth or longitudinally plicate, the last 

 whorl angled to keeled ; aperture oval ; peristome continuous, double ; 

 operculum thin, horny, paucispiral. 



Distribution. New Zealand (North Island only). 



KEY TO SPECIES. 



A. Suture margined. 



a. Height, 7 mm. . . . . . . . . carindla. 



aa. Height, 9 mm. . . . . Hochstetteri. 



B. Suture simple, not margined. 



a. Whorls 6i, the last angled . . . . . . egea. 



aa. Whorls 7-7, the last indistinctly angled . . turriculata. 



1. Realia carinella, L. PfeifTer, 1861. Plate 38, fig. 30. 



Realia carinella, Pfeiffer, Malak. Bl., viii, 150; Hedley and Suter, P.L.S. 

 N.S.W. (2), vii, 623 ; Suter, J. de Conch., xli, 226 ; Kobelt, Jahrb. 

 Nassau. Ver. f. Nat., lix, 50. 



Shell perforated, turreted, rather solid. Sculpture : The third 

 whorl closely and finely axially striate, the following whorls ob- 

 liquely striated with small plait-like strise. Colour brown, faintly 

 marbled, or with a few yellowish streaks. Epidermis thin, slightly 

 shining. Spire elongated, outlines but little convex, a little more 

 than twice the height of the aperture. Protoconch slightly bulbose, 

 of 2 smooth convex whorls. Whorls 7, a little convex, the last 

 carinated ; base slightly convex, with a compressed riblet around the 

 perforation. Suture superficial, margined with a thread-like edging. 

 Aperture vertical, oval, angulated above. Peristome fuscous, double, 

 the internal one continuous, slightly raised ; the external flatly spread 

 out, nan-owed at the penultimate whorl, but slightly reflexed. Per- 

 foration very narrow, open. Operculum typical. 



Diameter, 3-25 mm. ; height, 7 mm. 



Dentition unknown. 



Type in the K.K. Hofmuseum, Vienna. 



Hob. Drury and Taupiri, type (Hochstetter) ; Tamkenga ; 

 Ohaupo ; Tuakau ; Maketu, Hunua Range ; Waitakeri Range (H. S.) ; 

 Omaha ; Whangaroa (C. Cooper) ; Rawene, Hokianga. 



