385 



Foot of the animal twice as long as the shell, truncate in front, 

 dilated at sides, lanceolate and carinate posteriorly; mantle not 

 enveloping the shell ; tentacles long subulate ; eyes lateral near 

 the base of vibracula. The shell belonsjs to the section Prunum 

 of Martini. 



VoLVARiNA PUELLA. T. parva, ovato-cylindracea, subflex- 

 uosa, polita, ex eburneo flavescens : spira depresso-conica ; anfr. 

 4, ultimo elongato-ovato ; sutura vitrea : apertura antrorsum dila- 

 tata ; labro tenui, infiecto, postice callo modico suffulto ; columella 

 4-phcatri. Axis 12; diam. 6 millim. Inhabits Simon's Bay, in 

 18 fathoms, gravelly bottom. TV. S. 



Resembles V. zonata, but is much larger ; possibly the shell 

 given by Sowerby as a variety, though no traces of bands are 

 visible. Like V. tceniata in form and size, but with a different 

 lip. The animal is very active, of a pale lemon-color, with 

 blotches of flake-white and very numerous crimson points ; mar- 

 gin of mantle dark chocolate. Generally like the animal of Per- 

 sicula. 



Amphiperas bullatus. T. tenuis, ovato-globosa, rubicun- 

 dula, lineis incrementi et postice striis volventibus insculpta : 

 apertura linearis ; labro angusto vix crenulato, porcellano, utroque 

 pariter producto, postice can ale m contortam obliquam callo cir- 

 cumdatam efformante, antice una cum plica, columellari canalem 

 brevem angifstam definiente. 



Closely resembles A. umhilicatiis and margarita^ but wants the 

 perforation and triply dentate callus of the former, and is much 

 less acuminated, with a less distinct canal and a denser and more 

 crenulated lip, than the latter. 



Planaxis inepta. T. minuta, glabra, ovato-lanceolata, albi- 

 do-lutescens, apice, linea subsuturali, et lineis alteris minoribus 

 nigris, postice et ad basin sulcis cincta ; anfr. 8-10 convexis: aper- 

 tura angusta; labro simplici, tessellato ; columella modice exca- 

 vata ; callo postico copioso. Axis 4 ; diam. 2.5 millim. Inhabits 

 Kikaia Bay, at low-water mark. W. S. 



Allied to P. succincta. 



Planaxis cingulata. T. parva, crassa, ovato-turrita, glabra, 



proceedings B. S. N. H. VOL. VII. 25 JANUARY, 1861. 



