226 PROCEEDINGS OF THE ACADEMY OF [Juiie, 



Mucronalia nitidula Pease; Fig. 12c. 



1S60. Mucronalia nitidula Pease, P. Z. S. p. 437 (Sandwich Is., lives on 



Holothurife). 

 1866. Eulima nitidula Pease, Sowerby, Conch. Icon. XV, PI. 5, figs. 35a, b. 

 1886. Eulima (Mucronalia) nitidula Pease, Tryon, Man. of Conch. VIII, 



p. 284. 



Not Eulima nitidula A. Ad., 1855. 



The shell is solid, opaque white, straight, of rather stronghj convex 

 whorls; apex lost, but the first whorl of those retained is dispro- 

 portionately small. There are no varices. Aperture is ovate, the 

 outer lip arching forward in the middle. 



Length 4.5, diam. 2.2 mm.; 6 whorls remaining. Length of 

 aperture 1.7 mm. (Metatype of E. nitidula Pse.). 



Length 3.9, diam. 2.1 mm., 5| whorls remaining. Length of 

 aperture 1.5 mm. (Quarantine Island, Honolulu). 



Quarantine Island, Honolulu, D. B. Kuhns, 1915. 



The contained animal gives a faintly ochraceous tint to part of 

 the last whorl. The solidity and convex whorls are characteristic. 



The larger of two specimens of M. nitidula Pse. in the Pease col- 

 lection. No. 31711 Mus. Comp. Zool., is drawn in fig. 12c. The 

 specimens from Quarantine Island are slightly smaller but otherwise 

 identical in characters. 



Mucronalia rosea (Pease). 



1860. Mucronalia rosea Pse., P. Z. S., p. 437 (Sandwich Is., lives on Echini). 



1866. Eulima rosea Pse., Sowerby, Conch. Icon. XV, PI. 5, fig. 39. 



1886. Eidima {Mucronalia) rosea Pease, Tryon, Man. Conch. VIII, p. 284. 



Mucronalia sandvichensis (Sowerby). 



1866. Eulima sandvichensis Sowb., Conch. Icon. XV, PI. 3, fig. 21 (Sand- 

 wich Is.). 



1886. Eidima (Mucronalia) sandvichensis Sowb., Tryon, Man. Conch. 

 VIII, p. 284. 



The original figure is 16 mm long. 



Mucronalia ovata Pease. 



1860. Mucronalia ovata Pse., P. Z. S., p. 437 (Sandwich Is.). 



"Shell elongately ovate, light, dull shining; whorls 5, shghtly 

 convex; inner lip thickened at the base and extending by a callositj^ 

 over the columella to the junction of the outer lip. Colour dull 

 white. Lives on Echini." A lost species, which can scarcely be 

 identified without dimensions, figure or type. 



Scalenostoma (Hyperlia^ apiculatum (Souverbie). PI. XIV, figs. 10, 106. 



Scalenostoma apiculatum Souv., Journ. de Conchyl. 1876, p. 383; 1877, p. 77, 

 PI. 1, fig. 1. 



Hilo, Hawaii. Mr. Thaanum found four specimens. Two were 



in holes in coral from which they could not escape, nor could they 



