Si iilittiiitl'm.'] GASTROPODA. 371 



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



Hub. North Island, not uncommon on rocky ground. Also Tas- 

 mania and southern coasts of Australia. The type is from the Bay 

 of Islands. 



Fossil in the Miocene and Pliocene. 



Subgen. 3. AUSTROFUSUS, Robert, 1879. 



Austrofusus, Kobelt : Kiister, Conch. Cab., Fusus, 127. Type : Fits it ts aller- 

 natus, Philippi. 



Shell ovate, fusiform, the last whorl rounded, not angulated at 

 the upper part ; canal moderately long, but little curved. 



KEY TO SPECIES. 



A. Height of shell with 8 to 9 whorls about 35 mm. or less . . caudata. 



B. Height of shell with 8 to 9 whorls more than 35 mm. 



a. Spiral grooves without additional spiral threads ; height 



about 50 mm. . . . . . . . . . . valedicta. 



an. Spiral grooves with 1 or more spiral threads ; height more 



than 50 mm. . . . . . . . . mandarina. 



3. Siphonalia caudata, Quoy and Gaimard, 1833. Plate 44, 

 fig. 18. 



Fusus caudatus, Q. & G., Voy. Astrol., ii, 1833, 503, pi. 34, f. 20, 21. Nep- 

 iuncea caudata, Q. & G. : Button, M.N.Z.M., 50. Fusus australis, 

 Q. & G. : Tryon, Man. Conch. (1), iii, 55, pi. 34, f. 119; not of Quoy 

 and Gaimard. F. caudaius, Q. & G. : Hutton, T.N.Z.I., xvi, 227. 

 Siphonnlia mandarina, var. caudata, Q. & G., Index, 72. 



Shell rather small, elongated fusiform, solid, with a moderately 

 long canal. Sculpture consisting of subequal narrow spiral cords, 

 about 10 on the penultimate whorl, the interspaces shallow, much 

 broader than the cords upon the base, where they have a fine spiral 

 thread ; axial sculpture formed by numerous vertical broadly rounded 

 ribs, 15 to 20 on the body- whorl, where they become obsolete below 

 the periphery. Colour light - yellowish, the spirals reddish - brown. 

 Svire elevated conic, of the same height as the aperture with canal ; 

 outlines straight. Protoconch of 2 smooth whorls, small and globose. 

 Whorls 8, regularly increasing, convex, very lightly shouldered, the 

 last somewhat inflated ; base excavated. Suture not much impressed. 

 Aperture large, oval, broadly angled above, produced below into a 

 fairly long oblique and open canal, rounded at the base. Outer lip 

 convex, sharp, lightly lirate inside. Columella subvertical, slightly 

 concave. Inner lip narrow, spreading over the parietal wall, narrowed 

 below, and forming the inner edge of the canal. Operculum unknown. 



Diameter, 13 mm. ; height, 34 mm. (type). Diameter, 14 mm. ; 

 height, 32 mm. (specimen from East Cape). 



. \ ,iimal unknown. 



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



Hab. New Zealand (Q. & G.) ; Hauraki Gulf ; East Cape. 



