ROS TELL ARIA. 



Species 4. (Mus. Cuming.) 



RosTELLARiA Povisii. Rost. testd elovgato-fusiformi, 

 so/idiiiscnia, spird valde acuminata, anfractihus plano- 

 rotundntis, nndiqiie spiraliter crebeiTime sulcatis, sulcis 

 s/rlin dfiise cancellatu, columella callosd, caiiali hrc- 

 viiiscido, ffracili, lahro incrasialo, quinqni-di'iitnlo, 

 denlihus muricatis, snperne vix canalicidato-prodiiclo, 

 apertum fame contractd ; stramineo-fiiscescente, colu- 

 melld labroque albis. 



Powis's RosTELLARiA. Shell elongately fusifoiin, rather 

 solid, spire very much acuminated, whorls flatly 

 rouiuk'd, spu'ally very closely grooved, grooves 

 densely cancellated with strife, columella callous, 

 canal rather short, slender, lip thickened, five-toothed, 

 teeth prickly, scarcely canalicidately produced at the 

 upper part, interior of the aperture contracted; 

 straw-tinted brown. Up and columella white. 



Petit, Magasiu de Zoologie, 1842, pi. 53. 



Hab. China. 



This interesting little species is very distinctly charac- 

 terized in all respects. From the larger fusiform species 

 of the genus it differs essentially in size and in being ela- 

 boratelv si)irally grooved throuii'hout. 



Species 5. (Fig. a, h, and Fig. 7.) 



RosTELLARiA Fl'sus. Eost. testd grac'dUiiii-fmifurMi, 

 spird raldi acuminata, anfractihus primis paucis con- 

 vexis, loni/itudinaliter creberrime ienue cosiatis, catei-is 

 lavibus, superne cuncavo-declivibus, deinde rotundatis, 

 anfractu nltimo bad sulcato, columella arcuatd, callosd, 

 canali gracili, prcdongo, aperturd parviusculd, lahro 

 quinqne- ad sex-dentato, dentibus prominentibus, lahro 

 superne calloso, brevissime canaliculato-producio et 

 crispato ; fnlm-aurantid, lahro interdum purpureo-ni- 

 gricante Undo. 



The spindle Rostellakia. Shell very slenderly fusi- 

 form, spire very much acuminated, the first few 

 whorls convex and longitudinally very closely finely 

 ribbed, the rest smooth, concavely slanting roimd the 

 upper part, then rounded, last whorl grooved at the 

 base, coliunella arched, caUous, canal slender, very 

 long, aperture rather small, lip five- to sis-toothed, 

 teeth prominent, lip callous at the ujiper part, very 

 shortly canaUculately produced and curled ; fulvous- 

 orange, lip sometimes stained with blackish-pm-ple. 



Stromhusfusus, Limifcus, Syst^ Nat. (13th edit.) p. 1207. 



liostellaria fusus, Deshayes. 



Slrombus clavus, Gmelin. 



Strombus rmicornis, Dillwyn. 



Roslellaria suhdata, Schumacher. 



Rostellaria rectirostris, Lamarck. 

 Hah. China. 



This elegantly-formed shell is of very rare occurrence 

 in fine state, and has always been esteemed a choice 

 species by the collector. Sir E. Belcher coUected some 

 thii-ty or forty specimens in the China Seas during the 

 voyage of the Samarang, but they were all dead and more 

 or less broken. The variety represented at Fig. 5, with 

 a dark pui-jile-black lip, is reported to have been collected 

 at the Red Sea, and at Kurrachee, mouth of the Indus. 

 It does not appear, on examination, to differ in any ma- 

 terial character from the type of the species represented 

 at Fig. 7. The canal of this pm-ple-stained specimen is 

 evidently broken at the extremity. 



S])ecies 6. (Mus. Cuming.) 

 Rostellaria occidentalis. Eost. testa fusiformi, spird 

 turritd, anfractihus convexis, primis paucis lavibus, 

 cateris eoncentrice plicato-costatis, anfractu ultimo tu- 

 midittsculo, transversim dense striata, in alam brevem 

 simplicem late expanso, columella arcuatd, callosd, 

 aperturd suhcontractd ; candescente-alhd, pallida fer- 

 rugiueo-tinctd. 

 The western Rostellaria. Shell fusiform, spire tur- 

 reted, whorls convex, the first few smooth, the rest 

 concentrically plicately ribbed, last whorl rather 

 swollen, transversely densely striated, broadly ex- 

 panded into a short simple wing, columella arched, 

 callous, ajjerture somewhat contracted ; bkiish-white, 

 tinged with rust. 

 Beck, Magasin de Zoologie, 1836, pi. 72. 

 Hab. Banks of Newfoundland (found mostly in the stomach 

 of fishes) ; Gould. 

 This interesting shell is intermediate in its characters 

 between Aporrhais {E. pes-peltcani) and Strombus, and 

 very much adds to the perplexity arising in the mind of 

 the couchologist, out of the removal of the first-named 

 genus, by Professor E. Forbes, to the family of Cerithiada. 

 It is to be hoped that the animal of this species may soon 

 become known, and throw some light on this seeming 

 anomaly. 



March, 1S51. 



