or CONCHOLOGY. 219 



Shell slender, elongate, shining, somewhat cylindrical ; whole 

 surface beautifully closely clathurated by longitudinal and trans- 

 verse ridges, granulated at their intersection ; aperture small ; 

 sinus deep ; canal very short ; violet color, encircled with two 

 white bands, tip of apex yellow, 



Remarlcs. — Nearly allied to B. pumila, Migh., inhabiting the 

 Sandwich Islands. 



Clathurella maculosa, Pease. — Plate 15, fig. 16. Proc. 

 Zool. Soc. London, 1862. 



Description. — T. oblonga, fusiformi-ovata, longitudinaliter 

 costata, costis 8, rotundis, confertis, transversim lirata ; anfr. 

 plano-convexis, spira acuminata ; apertura dimidiam longitudinis 

 testae baud gequante ; alba, nitida, costis rufo-castanea maculatis. 



Dimensio7is. — Long. 5, diam. 2 mill. 



Habitat. — Paumotus. 



Shell oblong, fusiformly ovate, longitudinally ribbed, ribs 

 round, close set, descending from the sutures, about eight in 

 number, transversely strongly ribbed ; whorls flatly convex ; 

 spire acuminate ; aperture rather less than one-half the length 

 of the shell ; white, shining, ribs sparsely spotted with reddish- 

 chestnut, the color extending sometimes the whole length of the 

 shell. 



Remarks. — This species may be compared with 0. tessellata, 

 Hinds, which occurs at the same locality. It is, however, 

 -smaller than the latter species, and is strongly ribbed and 

 ridged. 



Clathurella canaliculata. Pease. — Plate 15, fig. 17. 



Description. — T. oblongo-ovata, spira subacuminata ; longitu- 

 dinaliter costata, costis 14, rotundatis, e suturis descendentibus ; 

 transversim lirata, interstitiis striis minutissimis decussatis ; ad 

 suturam conspicue canaliculata ; canali brevi, subrecurvo ; labro 

 forte dentato ; columella lirata ; rubida, fascia alba cincta, infra 

 fasciam, linea fusca marginata, sutura fusca. 



Dimensions. — Long. 11, diam. 4| mill. 



Habitat. — Paumotus. 



Shell oblong ovate, ribbed longitudinally, ribs about 14 in 

 number, rounded, descending from the sutures, very prominent 

 on the spire and middle of last whorl, transversely ridged, in- 

 terstices decussated by microscopic stride ; spire somewhat 

 acuminate ; sutures widely and deeply canaliculate ; canal short, 



