HuTTON. — Contributions to the Conchology of New Zealand. 293 



Explanation of Plate XI. 



Fig. 1. Himantidium ferrugineus . . a anterior extremity 



h posterior extremity 



2. Himantidium morhosus 



3. lulus antipodarum 



4. Polydesmus gervaisii 



5. Craspedosoma trisetosa 



6. Sphoirotlierium leiosomus 



a anterior extremity 

 h posterior extremity 



a profile of anterior end 

 b extremity of antenna 



a profile of anterior end 

 h profile of posterior end 



a anterior end from above 

 h profile of anterior end 



a profile 



h head, nuchal plate and first 



segment from the front 

 c last two dorsal segments 



from behind. 



Aet. XL. — Contributions to the Conchology of New Zealand. 



By Prof. F. W. Hutton. 



[Read before the Otago Institute, Qth October, 1877.] 



lanthina iricolor, Eeeve ; Concli. Ic, fig. 23. 



Specimens liave been sent me from the North Island by Mr. T. Kirk. 



Trophon dubius, Hutton; Jour, de Concli., 1877. 



Ovato-fusiform, thick; whorls seven, convex, rudely spu'ally ribbed, those 

 of the spire whorls transversely ribbed. Aperture oval ; canal very short, 

 not bent, and rounded anteriorly. Covered with a greenish-brown persistent 

 epidermis. Interior dark purple ; canal and anterior portion of columella 

 whitish. L. -7 ; B. -4. 



Hab. Auckland — Mr. T. F. Cheeseman. 



Fusus spiralis, Adams ; P.Z.S. 

 F. pensiim, Hutton ; Cat. Mar. Moll. 



Fusus incisus, Gould. 



Gould gives the habitat as uncertain, " probably New Zealand." I have 

 seen no specimens. 



" Shell of medium size and moderate thickness, of an elongated ovate 

 form, of a cinereous brown colour, everywhere encircled with narrow, deeply 

 impressed striae of a more decided brown colour than the interspaces, about 

 ten on the penultimate whorl. The apical whorls have also eight or nine 

 longitudinal undulations. "Whorls six or seven, convex, the last two-thirds 

 the length of the shell, tapering about equally each way; siphonal beak 

 short, a little recurved. Aperture one half the length of the shell, narrow, 

 suboval; outer Hp regularly arcuate, crenulated by the impressed lines. 



