STJTER : NEW ZEALVXD LAXD MOLLTJSCA. 35 



rounded ; whorls 5, slowly and regularly increasing, rounded, the 

 last not descending in front ; suture impressed ; whorls radiately 

 costate, the costte sharp and elevated, directed forwai'ds, arcuate on 

 the upper surface, sinuate on the periphery and base, about ten per 

 millimetre, interstices minutely decussate. Protoconch having fine, 

 narrow costa?, obtuse. Aperture lunate, oblique ; peristome regularly 

 arched, straight, acute, the outer lip tapering, columella lip short, 

 arcuate, not reflexed ; margins convergent ; umbilicus broad, nearly 

 one-fourth of the greatest diameter, showing all the whorls ; base 

 rounded. Diam. max. 4, min. 3*5; alt. 2 mm. 



Tjipe in my collection. 



Hah. — Tarukenga near Rotorua, North Island (Capt. T. Broun). 



Named in honour of JMr. B. Rosevear, Fulham, London. 



This species is nenrcst to E. Sterkiana, Sut., but may at once be 

 distinguished from it by the costoe being wider apart. 



5. Endodoxta (Chakopa) Titirangiensis, n.sp. PI. lY, Figs. 8-10. 



Shell small, discoidal, umbilicated, thin, horny, without colour 

 markings, semi-transparent, dull ; longitudinally costate, the costte not 

 much raised, slightly directed backwards, sinuated at the periphery ; 

 interstices with fine lines of growth, 9-10 costellaj per millimetre. 

 Whorls 5, the first three gradually increasing, the last attaining 

 relatively a considerable development, taking up about one-third of the 

 maximum diameter ; suture well impressed. Protoconch smooth, spire 

 flat, periphery rounded. Aperture rotundly lunate, oblique ; peristome 

 straight, acute, columella lip slightly callous and reflexed ; margins 

 converging. Umbilicus about one -third of the greatest diameter, 

 showing all the whorls. Base rounded. Diam. maj. 3'75, min. 3'25 ; 

 alt. 1*75 mm. 



Type in my collection. 



Hah. — Nikau-bush, Titirangi, near Auckland (H. S.). 



This shell is closely allied to H. anguiculus., Reeve, var. montivaga, 

 Sut., but differs from it in the greater diameter of the four first 

 whorls, the broader last whorl, etc. 



6. Laoma elegans, n.sp. PI. IV, Figs. 11, 12. 



Shell minute, conoidal, perforate, horny, without colour markings, 

 somewhat glossy, thin, transparent, surface radiately costate, the very 

 distinct costellte straight, directed backwards, 15 per millimetre. Spire 

 dome-shaped ; periphery slightly keeled ; whorls 5, flatly rounded, 

 gradually and slowly increasing ; suture impressed. Protoconch 

 smooth, rather large. Aperture transverse, semicircular, with six long 

 slender lamellfe, two on the penultimate whorl and four on the base, 

 the latter lying far back, and only showing through the trans- 

 parent shell on the exterior as white lines. Peristome straight, 

 acute, basal lip broadly rounded, columella lip slightly callous, 

 reflexed ; margins only very slightly approximate. Umbilicus narrow, 

 but pervious, not covered by the columellar reflection. Base smooth 

 up to the periphery ; whitish, flatly rounded. Diam. 2, alt. 1*5 mm. 



Type in my collection. 



