A REVIEW OP VOLUTIDAE 



3^ 



Alcithoe afrlcana beckeri (Turton) 1932 

 (Unfigured) 



Valuta afrlcana beckeri Turton, Marine 

 Shells of Port Alfred, p. 44, 1952. 



Alt. 60, dlam. JO mm. 



Hab. South Africa. 



This Is a narrow variety with a 

 much sharper spire. Rare. 



Alcithoe arablca (Martyn) 1784 

 (Plate 8, Figure 65) 



Buccinum arabicum Martyn, Un. Con. 11, 



fig. 52. 

 Fuliuraria arabica. Suter: Man. N. Zeal. 



Moll. p. 445, plate 48, figure 5, 1915. 

 Alcithoe arabica. Powell: Shellfish of N. 



Zeal. -D. 81. Plate 1, figure 7, 1937. 

 Valuta paciflca Solander, Port. Cat., p. 

 190, number 4039. Reeve: Conch. Icon., 

 plate 17, fig. 38b (not 38a), 1849. 



Thes. Conch., vol. 1, p. 205, 

 fig. 25. Tryon: Man. Conch., 

 94, plate 28, figs. 97, 98, 



Sowerby : 

 plate 48, 

 vol. 4, p, 

 1882. 



Alt. 82-112 mm. 



Hab. Auckland and North Island, New Zea- 

 land. 



Nucleus consisting of two and one- 

 half whorls, apex pointed; post-nuclear 

 whorls four to four and one-half; suture 

 distinct; nine strong nodules on the body 

 whorl, on the penultimate whorl, less dis- 

 tinct, replaced on earlier whorls by rib- 

 lets, which extend from suture to suture; 

 four to five plaits on the columella; outer 

 lip sometimes extended to correspond with 

 the adjacent tubercle. 



Alcithoe calva 1 Powell I928 

 (Unfigured) 



Alcithoe calva Powell, Trans. New Zealand 

 Inst,, vol. 59, p. 362, 1928. Shell 

 Pish New Zealand, p. 81, species IO86, 

 1937. 



Alt. 173, dlam. 64 mm. (holotype). 

 Alt. 177, dlam, 64 mm. (paratype). 



Hab. Off Cape Campbell, Marlborough In 

 40-50 fathoms (H. Hamilton, I925), 

 Castlecllff, Wanganul (Upper Pliocene) 

 one example (A.W.P.B. I927). All New 

 Zealand . 



Shell very large, narrow and elon- 

 gated. Whorls eight and one-half. Proto- 

 conch scaphelloid, moderately large, two 

 and one-half smooth whorls. Post-nuclear 

 whorls smooth, devoid of sculpture except 

 in rare Instances where spire-whorls are 

 faintly shouldered, showing traces of axial 

 costae. Spire tall, half the height of 

 aperture, whorls slightly convex. Body- 

 whorl elongate, sub- cylindrical, gradually 

 contracted below to rounded fascicle, not 

 marked off by usual ridge. Aperture long, 

 rather narrow with shallow notch below. 

 Outer lip thickened, reflexed above, as- 

 cendihg about one-third height of penulti- 

 mate whorl. No projecting callus-plate on 

 coliimella which is straight, tapering to a 

 sharp point below, with six comparatively 

 weak, very oblique plications; upper one 

 more or less rudimentary. Inner lip spread 

 as a thin glaze broadly every body-whorl. 



Color pale buff, ornamented with 

 indistinct irregular light brown zig-zag 

 lines. Interior of aperture pinkish- fawn. 



Most specimens have the outer sur- 

 face badly eroded. 



Holotype and 21 paratypes in Domin- 

 ion Museum, Wellington, New Zealand. 



Powell states that this species dif- 

 fers from suainsonl in the elongated shape, 

 weak columella plications, shallow anterior 

 siphonal notch, and absence of projecting 

 columellar callus-plate. Another related 

 species, larochei Marwick, is distinguished 

 by its broadly- fusiform shape and fewer and 

 stronger columellar plications. 



Both larochei and calua occur com- 

 monly at Cape Campbell but do not seem to 

 intergrade . 



Alcithoe depressa (Suter) 1908 

 (Plate 8, Figure 67) 



Fuliuraria depressa Suter, P.M.S.L,, vol.8. 

 p. 182, pi, 7, f. 11, I9O8. Suter: Man. 

 of N. Zeal. Moll., p. 447, pl. 48, fig. 



7, 1913. 

 Alcithoe depressa Powell: Shellfish of 

 N. Zeal. p. 81, species 1082, pl. 12, 

 fig. 1, 1937. 



