1 00 Tra nsa c f ions . 



Aperture oval, lightly notched posteriorly, and produced anteriorly into 

 a very short widely-open canal sharply bent to the left. Basal margin 

 straight, not notched. Columella fairly short, straight, subvertical. Inner 

 lip thinly and narrowly callous, ending in a point below. Outer lip 

 incomplete. Siphonal fasciole distinct. 



Length of imperfect holotype. 9 mm. ; diameter, 2-3 mm. 



Holotype and two fragmentary paratypes in author's collection. 



Locality : West coast, near Kawa Creek, south of Waikato Eiver, Auck- 

 land. Collected by Bartrum, 1917. 



Tugalia kawaensis n. sp. (Plate VII, fig. 13.) 



Small, conical, rounded shell, somewhat produced anteriorly ; sub- 

 central, blunt apex, directed back. Posterior slope gentle, straight or only 

 slightly concave, anterior gently convex. Posterior and lateral margins 

 rounded, lateral margins converging towards broadly truncated anterior end. 



SUt-fasciole distinctly raised as sharp fold of shell, but not sculpturally 

 differentiated except that it is stronger than adjacent radial riblets. These 

 latter are well developed, about 50 in number, well raised, rounded. Some 

 at intervals better developed than intervening ones ; interspaces subequal 

 to ribs. Broad, concentric, rounded ribs, about 8 or 9 in number, are pro- 

 minent in interspaces, and make the radial ribs themselves slightly nodular ; 

 sjiecially prominent in the fragmentary paratype. Towards apex concentric 

 and radial ribs alike diminish. 



The interior muscle-scar hooked back anteriorly towards apex. 



Length, 6-2 mm. ; breadth, 5-3 mm. ; height, 2-3 mm. 



Holotype and a fragmentary paratype in author's collection. 



Locality : West coast, near Kawa Creek, south of Waikato River, Auck- 

 land. Collected by Bartrum, 1917. 



Turbo postulatus n. sp. (Plate VII, fig. 14.) 



Unfortunately only a fragment, comprising little more than the basal 

 portion of the body-whorl, is available for description. It appeared to 

 the writer to represent a species of Turbo previously unknown in the New 

 Zealand fauna, a fact verified by the late Mr. Suter, who declared it to be 

 a new species of that genus. 



In spite of the fragmentary nature of the holotype it seems advisable 

 for convenience of reference to give this shell a specific name and to append 

 its description. 



Shell fairly large, diameter approximately 27 mm., imperforate ; columella 

 mainly straight, highly oblique, but bent to the right near produced basal 

 margin of aperture. Outer lip imperfect, thin ; inner lip a widespread 

 thin callosity on body-whorl and the somewhat excavated umbilical region, 

 tapering rapidly to a point below. 



Sculpture of body-whorl distinctive : growth-lines very numerous and 

 prominent, crossing several convex, broad, well-raised spiral keels, these 

 latter separated by subequal interspaces. On the indefinitely delimited 

 basal portion of the body-whorl are approximately 4 such keels. The 

 fourth of these is much stronger and broader than the others ; it surrounds 

 the relatively depressed umbilical tract and causes a distinct sinuosity of 

 the basal margin of the aperture. 



Holotype in author's collection. 



Locality : West coast, near Kawa Creek, south of Waikato River, Auck- 

 land. Collected by Bartrum, 1917. 



