4 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Terebra Mzenensis n. sp. PI. I, figs. 2, 2^. 



Shell slender with straight lateral outlines, wliite, lustcrless. Whorls 

 15|-, nearly flat, the first two smooth, the first whorl rather globose and 

 convex. Sculpture of ratlier strong, even, slightly arcuate rounded 

 ribs, about 21 in number on the last whorl, and nearly as wide as their 

 intervals. These ribs are cut but not interrupted by a spiral groove 

 defining a subsutural fasciole, the groove being deeper in the inter- 

 stices. Below the groove or furrow there are 6 to 8 spiral cords, low 

 on the summits of the ribs, stronger in the intervals; and above the 

 furrow there are 4 or 5 finer spiral threads. The suture is rather deeply 

 impressed. The small aperture is irregularly trapezoidal; columella 

 vertical; canal recurved. Length 26, diam. 6, longest axis of aperture 

 6 mm. 



Hirado, Hizen. Types No. 85,993, A. X. S. P., from Xp. 1,529 of 

 Mr. Hirase's collection. 



Similar to T. suhtextilis Smith in color and sculpture, but in speci- 

 mens of the same length this species is broader with a larger aperture. 



Terebra awajiensis n. sp. PI. I, figs. 3, 3a. 



Shell straightly acuminate, rather slender, the diameter contained 

 about 4f times in the length. The upper half of each whorl is brownish 

 cream-tinted, the lower half purplish or reddish-brown, usually paler 

 or fading toward the suture below. The last whorl has a supra- 

 peripheral purple-brown band, sharply defined on its upper edge, paler 

 and fading below, where it is interrupted by light streaks. It extends 

 as far as the basal contraction, but just below the periphery is divided 

 by a narrow whitish spiral band. Sculpture of rather acute, nearly 

 vertical riblets, which bend forward a little below, and on the last 

 whorl are distinctly bent forward, and gradually diminish do'wnward, 

 disappearing at the subperipheral' light band. The ribs are pale and 

 interrupt the dark band. The intervals are concave and wider than 

 the ribs, without spiral striation, but the whole surface shows faint 

 growth-lines. Slightly below the upper third each whorl is cut by a 

 spiral furrow interrupted by the ribs, leaving an oblong pit in each 

 interval (but in some specimens the furrow is continuous though weak 

 over the ribs). The pits are first developed on the 8th or 9th whorl, 

 those above having no trace of the sulcus. "WTiorls about 18, the first 

 3 smooth, the apical whorl purple-black and having a diameter of 

 about .3 mm.; subsequent whorls nearly flat, parted by a narrow, 

 impressed suture, the last whorl rounded peripherally, strongly con- 

 tracted below. Siphonal fasciole short and convex, bounded above 

 by a low and inconspicuous ridge. Aperture a little less than one- 



