270 GASTROPODA. [Pectinibmnchia. 



5. Turritella pagoda, Reeve, 1849. Plate 39, fig. 17. 



Turritella pagoda, Reeve, Conch. Icon., v, f. 60; Man. Conch. (1), ix, 204, 

 pi. 64, f. 95 ; Murdoch and Suter, T.N.Z.I., xxxviii, 292. 



Shell not very large, elevated, and many-whorled, with 1 prominent 

 keel, thin and fragile. Sculpture : The first two whorls are smooth ; 

 the next two have a sharp keel on the middle ; on the succeeding 

 whorls this keel is gradually getting lower down, till it is situate 

 at the lower third of the whorl, but it always remains the most con- 

 spicuous of the cinguli ; from the fifth whorl down a number of fine 

 spiral threads appear above and below the principal keel, and one of 

 them, situate at the upper third of the whorl, is getting somewhat 

 stronger than the others ; the fine threads are unequal in strength, 

 usually the finer and thicker threads are alternating ; base with, very 

 fine unequal spiral lines. Colour Avhitish. obscurely flamed with light 

 fulvous. Spire high, narrowly conic ; outlines straight. Protoconch 

 of 2 smooth, convex, and slightly angled whorls. Whorls 14 to 15, 

 regularly increasing, slantingly flattened, but sometimes slightly 

 concave above and below the keel ; body-whorl sharply angled ; 

 base flattish. Suture impressed. Aperture sub quadrangular, vertical. 

 Outer lip sharp and thin, with a rather deeply rounded sinus a little 

 below the middle ; outer and basal lip slightly produced upon the 

 keel bounding the base. Columella vertical, but little callous. Inner 

 lip slightly spreading beyond the columella above, and as a thin and 

 polished glaze over the parietal whorl. Operculum unknown. 



Diameter, 6-5 mm. ; length, 22 mm. (specimen of 10 whorls). 

 Angle of spire, 18. 



Animal unknown. 



Type in the British Museum. 



Hob. Great Barrier Island ; off Great Barrier Island, in 110 

 fathoms ; off Cuvier Island, in 37 fathoms (Captain Bollons) ; near 

 Channel Island, Hauraki Gulf, in 25 fathoms. 



Fossil. Miocene and Pliocene. 



6. Turritella rosea, Quoy and Gaimard, 1834. Plate 39, fig. 16. 



Turritella rosca, Q. & G., Voy. Astro!., iii, 136, pi. 55, f. 24-26 ; Dieff. N.Z., 

 242; Conch. Icon., v, pi. S, f. 41; Man. Conch. (1), ix, 199. pi. 62, 

 f. 67, 68; C. Tert. M.B.M., 240; Kiener, icon. Coq. Viv., 1843, 32, pi. 12, 

 f. 2. T. lineolatu, Kiener, t.c., 25, pi. 5, f. 2. 



Shell rather large, more or less irregularly spirally striated, body- 

 whorl carinated, thin. Sculpture : The nucleus is smooth, the second 

 whorl has a median keel and below it a faint spiral thread, the third 

 to fifth whorl with 3 spiral threads, and on the succeeding whorls 

 numerous close and much finer spiral lines are intercalated ; the 

 upper and lower cinguli remain mostly more prominent on all the 



