TORNATELLINA. 153 



yellow, smooth. Spire straightly conic, the apex rather acute. 

 Whorls 51/2, moderately and evenly convex; the last whorl 

 convex throughout, marked with two or three vertical whitish 

 streaks at intervals of one-fourth of a whorl. Aperture ovate, 

 oblique. Outer lip thin and sharp. Columella strongly 

 twisted. An oblique lamella superposed upon the middle of 

 the much more oblique columellar fold, but rather receding, 

 clearly visible in an oblique view in the aperture. Parietal 

 lamella very deeply entering, more than a half-whorl long, 

 flaring outward. A short distance within the thin outer lip 

 there is a narrow but strong white rib, weaker near its upper 

 end, and another is placed about one-fourth of a whorl within. 

 Length 3, diam. 1.7, aperture 1.25 mm. 



Japan: Hachijo-jima, Izu (Hirase). Types no 83380 A. 

 N. S. P. 



Tornatellina biplicata PILS., Nautilus, xvi, September 8, 

 1902, p. 57. Keferred to by error as "T. triplicates" in Proc. 

 A. N. S. Phila., 1905, p. 718. 



This species is known to us only in the adult stage, or what 

 we take to be such. It has palatal barriers of the same type 

 as the form lavis of T. serrata (Pse.), from which T. biplicata 

 differs by its less rapidly tapering spire and the much less 

 prominent columellar lamella. T. biplicata is more regularly 

 conic than T. ogasawarana, and has not the tinted lip-callus 

 of that species. 



Hawaiian Species. 



15. T. CYLINDRICA Sykes. PI. 43, figs. 1, 2, 3 ; pi. 40, figs. 1, 2. 

 Shell elongate, cylindrical, corneous, perforate; whorls 5- 

 51/2? somewhat convex, slightly striate, the last rotund, equal 

 to two-fifths of the whole length, suture impressed ; aperture 

 ovate or lunate, a lamella revolving on the parietal wall. 

 Columella thickened, whitish, twisted, sometimes furnished 

 with a small denticle. Length 2.2, breadth hardly 1 mm. 

 (Sykes). 



Kauai: Makaweli (Perkins); Oahu: Waianae Mts. (type 

 oc.; Perkins, Cooke), under the bark of lehua (Metrosideros 



