196 Transactions.— Zoology. 
E. marma, Hutton (1888). 
Spire conoidal rather obtuse; striated; a columellar plait, and two 
parietal plaits, none on the basal margin. Pale yellow faintly marked with 
chestnut. Diameter :13 inch. 
North Island.—Remuera, near Auckland (Cheeseman). 
E. nerissa, Hutton (1883). 
Spire conoidal, obtuse, striated; a columellar 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.—Remuera, near Auckland (Cheeseman), 
Genus Phrixgaathus, 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 RAP covered with small papilla. 
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. marta, Gray (1848); H. umbraculum, 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 (Martens). 
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 ‘18 inch. Dentition, 38-1-88. 
North Island.—Auckland (Cheeseman, Gillies); Kakepuku (Hochstetter) ; 
Horokiwi, Wellington. 
P. arreL, Hutton (1888). 
Spire conoidal, depressed; finely ribbed, ribs about 46 in the tenth of an 
inch; sub-carinate; sutureimpressed. Diameter -13inch. Dentition, 82-1-82. 
North Island.—Auckland (Cheeseman) ; Wanganui (T. W. Kirk), 
B. Narrowly umbilicated. 
a. Spire conical. 
P. marematus, 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, 85-1-85, 
