] 9G Transactions. — Zoology. 



E. mahina, Hutton (1883). 



Spire conoidal rather obtuse ; striated ; a colurnellar plait, and two 

 parietal plaits, none on the basal margin. Pale yellow faintly marked with 

 chestnut. Diameter '13. inch. 



North Island. — Eemuera, near Auckland (Cheeseman). 



E. nerissa, Hutton (1883). 



Spire conoidal, obtuse, striated ; a colurnellar plait and six parietal 

 plaits, three of which are on the basal margin. Pale horny with indistinct 

 bands of chestnut. Diameter # 11 inch. 



North Island. — Eemuera, near Auckland (Cheeseman). 

 Genus Phrixgnatlms, Hutton. 



Animal heliciform, the body elongated; mantle sub-central, slightly 

 reflected over the peristome of the shell ; no locomotive disc, nor mucous 

 gland. Jaw imbricately folded, the surface covered with small papillae. 

 Shell trochiform, turbinate, or depressed, umbilicate or sub -perforate, 

 smooth, rather shining, striated ; aperture edentulous. 



Perhaps this genus and the last should be placed in the Goniognatha. 

 The transverse rows of teeth form an obtuse angle, salient posteriorly. 



A. Subperforate. 



P. mabia, Gray (1843) ; H. umbracnlum, Pfeiffer (1851). 



Spire conoidal, obtuse ; periphery sharply angled ; suture margined. 

 Pale horny, with numerous undulating bands of reddish brown on both 

 surfaces. Diameter -28 inch. Dentition, 47-1-47. 



North Island. — Auckland (Sinclair, Greenwood, Cheeseman, Gillies) ; 

 Wellington (T. W. Kirk). 



Allied to H. insculpta (Pfr.), from Norfolk Island (Marteus). 



P. conella, Pfeiffer (1861). 



Spire conoidal, slightly acute, smooth ; periphery slightly angled ; 

 suture slightly margined. Pale horny, with reddish brown spots and bands 

 on both surfaces. Diameter *13 inch. Dentition, 38-1-38. 



North Island. — Auckland (Cheeseman, Gillies) ; Kakepuku (Hochstetter) ; 

 Horokiwi, Wellington. 



P. ariel, Hutton (1883). 



Spire conoidal, depressed; finely ribbed, ribs about 46 in the tenth of an 

 inch; sub-carinate ; suture impressed. Diameter '13inch. Dentition, 32-1-32. 



North Island. — Auckland (Cheeseman) ; Wanganui (T. W. Kirk). 

 B. Narrowly umbilicated. 

 a. Spire conical. 



P. marginatum, Hutton (1882). 



Spire acute ; periphery sharply angled ; suture margined. Pale horny, 

 with broad radiating reddish-brown bands on the upper surface only. 

 Diameter -17 inch. Dentition, 35-1-35. 



