380 GASTROPODA. \PcctinibmnrMn. 



7. Euthria vittata, Quoy and (jraimard, 1833. Plate 45, tig. 2. 



Fw.v.s ritiulux, Q. & (4., Voy. Astrol.. ii, 1833. .104, pi. 34, f. 18, 19; Cray, 

 Dieff. N.Z., 230; Mutton, C.M.M., 10; v. Martens, Crit. List, 19. 

 KU///IHI ri/l/iln, (). &.. G. : Mutton, J. <lc Conch., 1878, 15; M.N.Z.M., 

 51 ; Tryon, Man. Conch. (1), iii, 152. pi. 72. f. 23.'.. 23(i. Pisania vittni.i, 

 Q. & G. : Hutton. T. X.Z.I., xvi, 230. Kiirn'mnn Irilinealwn, Reeve, 

 Conch. Icon., iii, 184(5, f. 98. F-nsux hirinchix. Hutton, C.M.M.. 10. 

 Knlln-iu birincta, Hutton, J. dc Conch.. 1878, 1.1; M.X.Z.M.. 52: Try on, 

 Man. Conch. (1). iii, 152, pi. 72, f. 234. 



Shell rather small, fusiform, solid, smooth or spirally ridged, typically 

 with 2 broad purple bands on the body-whorl. Sculpture consisting of 

 fine spiral strife, but sometimes spiral ridges are present, which are 

 more prominent upon the base ; a few whorls below the protoconch 

 are axially costate, but occasionally they extend to the penultimate 

 whorl. Cnlour yellowish-brown, with or without tine distant brown 

 spiral bands ; spire-whorls with a broader purple band close above 

 the suture, and 2 on the body-whorl ; the coloured bands, however, 

 are often absent ; aperture purple inside, sometimes streaked bro\vn 

 and white on the outer lip. S-pire elevated conic, of a.bout the same 

 height as the aperture and canal ; outlines straight. Protoconch 

 small, of 2 smooth whorls, papillate. \Vhorlx 1 to 9. depressed below 

 the suture, thence flatly convex, the last high ; base contracted, 

 concave. Suture linear, superficial. Aperture subvertical. oval, 

 narrowly channelled above, produced below into a short, recurved, 

 widely open canal, notched at the base. Outer lip very little thickened, 

 sharp, smooth or lightly lirate within. Cnl.uiitellti vertical, arcuate, 

 with a few tubercles below. Inner lip narrowly spread upon the 

 pillar, extending thinly over the parietal wall, which has a low tubercle 

 below the suture ; narrowed and extending to the canal below, some- 

 times leaving a depression between the canal and the fascicle, which 

 is distinct and lamellate. Opvrculum normal. 



Diameter. 8-5 mm. ; height. 19 mm. (type) : angle of spire. 37 

 Diameter, 16mm. ; height, 34mm. (Chatham Islands specimen). 



Animal having the tentacles moderately long, the eyes near their 

 extremities ; the foot is small, oval, yellowish-white like, the head ; 

 these parts are marked with elongated reddish-brown spots ; of these, 

 there are 2 on the head and a third is encircling the tentacles above 

 the eyes. 



Dent, linn. Hutton, T. N.Z.I., XV, 120. pi. 13. f. 1. 



Type in the Mus. Hist. Nat., Paris. 



Hub. Bay of Islands (type) ; Hauraki (lull', rather common ; 

 Kawhia ; Lyttelton. Sunnier. Little Akaloa (H. S.) ; Chatham Islands ; 

 Auckland Islands. 



Remarks. This species shows a considerable variation, and perfect 

 albinos are not rare in the Hauraki Gulf. Specimens from the south 

 are considerably larger, and the colour-markings are much more 

 pronounced. The largest and distinctly banded specimens occur at 

 the Chatham Islands. 



o 



