GASTEROPODA. 



three spines on the spire whorls, and seven to thirteen on the body 

 whorl ; spines strongly recurved ; spire produced ; aperture ovate ; 

 outer lip grooved ; canal produced, nearly closed, slightly recurved, 

 spino.se with the remains of the old beaks. Reddish white, ribs red- 

 dish brown, often stained olivaceous brown, interior white, tinted 

 with violet. Length, 2 25 ; breadth, 1 ; angle of spire, 45. 

 Kapiti, Cook Strait. 



4. M. (PteronotilS) SOS, sp. nov. Small ; whorls six, with a 

 sub-nodular keei ; body whorl with shallow spiral grooves ; varices 

 three, forming continuous wings, crisped on the inside, and with an 

 obsolete posterior spine on each whorl ; aperture ovate ; canal rather 

 short, straight, half cloyed. Bright yellowish pink, paler inside. 

 Length, 1 ; breadth, 04 ; angle of spire, 42. 



Bay of Islands. 



FUSUS. 



Shell fusiform, spire generally long, niany-whorled ; aperture oval ; 

 canal long and straight ; columella smooth ; operculum horny, ovate, 

 curved, nucleus apical. 



World- wide. 



5. F. ponsuni, sp. nov. Fusiform, much elongated, smooth ; 

 whorls ten, sub-cariuated, spirally grooved ; keel sub-nodulose, suture 

 very deep ; aperture broadly ovate, almost round, suddenly narrowed 

 into the canal, which is much produced, narrow, quite straight, and as 

 long as the spire. White or brownish. Length, 2'85 ; breadth, 85 ; 

 angle of spirp, 32. 



Kapiti, Cook Strait. 



6. F. ailStralis, Qiioy, Voy. Astrolabe, ii., p. 495. Fusiform, 

 elongated ; whorls rather flattened, spirally striated, those of the spire 

 transversely ribbed ; body whorl rather ventricose ; outer lip renu- 

 lated, with a short posterior canal ; anterior canal long, nearly straight. 

 Reddish brown. Length, 2 - 2 ; breadth, '8 ; angle of spire, 35. 



Collingwood. 



7. F. ZealandiCUS, Quo//, I.e., ii., 500; R caudatus, Quoi/,l.c., 

 ii., p. '503. Fusiform, elongated ; whorls rounded, deeply spirally 

 grooved, each of the grooves generally with a single elevated line, 

 sometimes with two lines in a groove ; upper whorls only of spire 

 transversely ribbed ; outer lip cremilated ; canal produced. Eeddish 

 brown, the reliefs darker. Length, 5 ; breadth, 2'25 ; angle of spire, 

 45. 



8. F. mandarinUS, Dudos, Hag. de Zool., pi. 8. Fusiform, 

 elongated ; whorls rounded, spirally grooved ; each of the grooves with 

 one or two elevated lines ; spire whorls slightly, and body whorl 

 strongly, transversely ribbed ; outer lip creuulated ; canal rather pro- 

 duced. Pale brownish, reliefs darker. Length, 3'25 ; breadth, 1'55 ; 

 angle of spire, 48. 



Colliugwood. Probably a variety of the last. 



9- F. dilatatUS, Quoy, I.e., ii., p. 498. Ovato-fusiform; whorls 

 carinated, spirally striated, with a row of tubercles on the keel; 



