MOLLUSCA. 25 



margin, which is continuous with the slightly-produced lamina of the columella. 

 The body whorl is closely and somewhat elegantly covered with striae, which 

 sometimes are disposed to become flexuous. I do not know any other species of 

 this family with which the present can be at all associated. 



Daphnella. Hinds. 



Testa gracile fusiformis, tenuis, fiagilis; anfractus ultimus elongatus, spiram superans ; sinus 

 lateralis et ante suturam margine acuto ; labium tenue, intus lasve ; apertura elongate ovalis, vix 

 canaliculata ; columella nuda ; plerumque striata. 



Among the smaller Pleurotomacece are a few shells of a thin fragile structure, 

 elongated in form, the outer lip acute, and separated from the last whorl so as to 

 leave a sinus, aperture of a lengthened oval, scarcely any canal, and with the 

 surface usually transversely striated. These form a very distinct group, and may 

 be separated with advantage under a proper head ; the best known of these is 

 probably Pleurotoma lymnceiformis, Kiener. 



94. Daphnella marmorata, (Plate VII. fig. 19.) Testa attenuate ovali, tenui, striis trans- 

 versis longitudinalibus decussantibus eleganter cancellata, pallida, fusco marmorata ; anfractibus 

 quatuor rotundatis, superne planulatis et angulatis ; columella arcuata, ad basin striata. 



Inhab. New Guinea. In six fathoms, among mud. 



95. Daphnella casta, (Plate VII. fig. 20.) Testa attenuate fusiformi, vitrea, fragili ; anfrac- 

 tibus quinque rotundatis, transversim sulcatis ; columella contorta. 



Inhab. Gulf of Nicoya, Central America. In twenty-three fathoms, among 

 mud. 



9b'. Daphnella ornata, (Plate VII. fig. 21.) Testa attenuate fusiformi, pallida, maculis sub- 

 quadratis rufis seriatim dispositis ; anfractibus senis paulisper rotundatis, striis decussantibus cancel- 

 latis ; apertura elongata ; columella rectiuscula. 



Inhab. New Guinea. In six fathoms, among mud. 



Mangelia. Leach. 



97. Mangelia cinnamomea, Hinds, Proceed. Zool. Soc. 1843, p. 45, (Plate IX. fig. 1.) Testa 

 attenuata, nitid&, cinnamome^, albo fasciata ; anfractibus senis, plico-costulatis, transversim laevis- 

 sime striatis ; faucibus crenulatis. 



Inhab. North coast of New Guinea ; Straits of Macassar ; Straits of Ma- 

 lacca. From five to twenty-two fathoms, mud. 



H 



