30 



A REVIEW OP THE VOLUTIDAE 



a specimen in the collection of the author. 



Alclthoe swalnsonl swalnsonl Marwlck 

 (Plate 9, Figure 72, 

 nuclei Plate 24, Fig. l6l) 



1926 



Valuta eloniata Swalnson, Exot. Conch., 



1821, pi, 20, 21. 

 Scaphella eloniata Swalnson, Exot. Conch., 



ed. Hanley, 2^, pi. 20, 21. 

 Valuta paclfica var. eloniata Swalnson, 



M.N.Z.M., 62; T.N. Z.I, l6, 225. 

 Scaphella pad flea var. eloniata Swalnson, 



Index 74. 

 Alclthoe swainsoni Marwlck, Trans. N. Zeal. 



Inst., vol. 56, p. 294, 1926. Powell: 



Shell Fish New Zealand, p. 8I, species 



1084, pi. 12, fig. 3, 1957. 



Alt. 170, diam. 60 mm. 



Hab. New Zealand, especially In the south, 

 sandy beaches; holotype from Bay of 

 Islands; Kermadec Islands. Fossil in 

 the Pliocene, Miocene, and Oligocene of 

 New Zealand. 



Distinguished from arabica by its 

 more elongate form, the convex, not shoul- 

 dered whorls, and the almost total absence 

 of nodules. Sculpture consisting of broad- 

 ly rounded and low axial costae on the 

 three whorls below the protoconch, some- 

 times obsolete; the lower whorls are irreg- 

 ularly axially plaited, the plaits some- 

 times prominent and flatly convex, the 

 whole shell ornamented with fine growth- 

 lines. Color the same as in arabica. 

 Spire usually somewhat higher than half the 

 height of the aperture. Whorls moderately 

 convex, the body-whorl but moderately ven- 

 tricose. Suture compressed and wrinkled. 

 Outer lip as in arabica. Columella with 

 four to six plaits, five being the usual 

 number. 



Alclthoe swalnsonl motutaraensis 

 Powell 1928 

 (Unf igured) 



Alclthoe shiainsoni motutaraensis Powell, 

 Trans. New Zealand Inst., vol. 59, p. 

 361, 1928. Powell: Shell Fish New Zea- 

 land, p. 81, species IO85, 1937. 



Alt. 93.5, diam. 42.5mm. (holotype). 

 Alt. 74, diam. 33 mm. (paratype). 



Hab. Motutara and Muriwai Beach, west 



Coast, Auckland, New Zealand. Type lo- 

 cality Auckland, New Zealand. 



Shell solid, moderately large. 

 Whorls five, exclusive of damaged proto- 

 conch. Spire low, conic, less than one- 

 third height of aperture. Post-nuclear 

 spire-whorls faintly nodulous, angled below 

 towards lower suture, body whorl devoid of 

 nodules. Suture almost on a line with 

 shoulder tubercles, which are rather small, 

 regularly spaced, and laterally compressed. 

 Shoulder steep, almost straight. Body- 

 whorl large, inflated. Fasciole prominent, 

 marked off by defined ridge. Aperture 

 large, open, deeply notched below, sub- 

 angled above towards posterior notch. Out- 

 er lip thickened and reflexed, ascending 

 less than one-third height of penultimate 

 whorl. Columella vertical with large pro- 

 jecting callus-plate and six plications, 

 upper two weak, lower four very strong. 

 Inner lip spread as a thin glaze broadly 

 over body-whorl, with prominent callosity 

 towards posterior notch. Color uniform 

 pinkish-buff, with a very obscure pattern 

 in the form of zig-zag lines of darker buff, 

 entirely absent towards outer lip. The 

 paratypes show no traces of color pattern. 



Alclthoe thatcheri (McCoy) 1 

 (Plate 9, Figure 70) 



Volnta thatcheri McCoy, Ann. Mag. Nat. Hist. 

 1868, p. 54, pi. 11, fig. 1. Sowerby: 

 Thes. Conch, vol. 5, 2nd suppl., p. 299, 

 pi. 15, (Thes. pi. 514) fig. l47; Proc. 

 Zool. Soc. London, I869, p. 56l; J. de 

 C 1873, p. 38. Tryon: Man. Conch,, 

 vol. 4, p, 96, pi. 30, fig. 126. 



Alt. 100-125 mm. 



Hab. Bampton Reef, N.W. New Caledonia. 



Shell elongated; nucleus of five 

 whorls; followed by three post-nuclear 

 whorls, the last bluntly angulated and tu- 

 berculate at the periphery; the surface 

 irregularly marked with indistinct bands 

 and spots; columella with eight plaits; 



