1869.] On some new marine Gastropoda. 67 



Fam. Philineid^. 



VoLVATELLA, Pease, 1860. 



Volvatella Cincta, n. sp. (Plate XIII, Fgs. 4. 4a 4b.) 



T. ovato-cylindracea, membranacea, involuta, in medio paululum con- 

 ptricta, utrinque producta ; postice abrupte contracta, antice lente ro- 

 tundata atque subdilatata ; apertura postice angustissima, in medio 

 clausa, antice subrotundata, labio paulo reflexo ; labro tenui, postice 

 oblique desinente, in medio sinnoso ; epidermide cornea, pallide 

 fusca, cingulis latis rufescentibus instructa ; striis incrementi minutis, 

 regulariter flexuosis. 



Long. 11J Mil.— Diam. 6J Mil. 



Differing from its nearest ally, V. Vigourouxii, in the pecu- 

 liarity of the epidermis and in the anterior part of its aperture being 

 more rounded and not nearly so dilated ; there is also no callosity 

 near the margin of the inner lip, the difference in size is equally very 

 great, V. Vigourouxii being 24 Mil. in length and 14| in breadth. 



The animal resembles that of V. fragilis, Pease, (Am. Journ. of 

 Conch. Pt. 2. 1868), the colour being bright orange with bands of red 

 aggregrated corpuscles ; it lives in shallow water on reefs among coral- 

 lines &c. ; when molested, exudes a milky fluid. 



Fam. OxYNOiciDiE. 



Oxynoe, Baf., 1819. 



(Syn. Icarus, Forb. 1844. Lopliocercas, Krohn, 1847.) 



Oxynoe delicatula, n. sp. (Plate XIII, Fgs. 5. 5a. 5b. 5c.) 



T. ovata, involuta, postice paulo contracta ac truncata, antice rotun- 

 data, albida, tenuis ; apertura postice subcircularis, antice ovata, elon- 

 gata, dilatata, marginibus prope terminationem posticam approximatis 

 instructa, labio levi, tenui, labro postice paulo inflexo, ad marginem 

 acuto. 



Long, 6 Mil.— Diam. 3 \ Mil. — Rare. 



The much smaller expansion of the outer lip, <fec, at once distin- 

 guish this species from 0. Sieboldii, which it most resembles. 



