SIPHONOSTOMATA. 



SirilOXOSTOMATA. 



There mra 100 ncent species, uid 45 fossil : the Utter we Eooena. 

 T. Iriloni* is the great conch blown by the natives of Australia and 

 the Polynesian Inlander!. 



Struiliiolaria (Lam.). Shell oral, the spire elevated, the aperture 

 oral and wide ; canal very short, very much notched ; right lip sinuous, 

 not toothed, furniihed witli a bourrelet ; columellar bonier callous, 

 extended ; a sinus at the posterior union of the two lips ; operculuui 

 horny. 



& nodittota. Shell ovate-conical, thick, transversely striated, white, 

 painted with undulated, longitudinal, saffron-coloured, flame-like lines; 

 whorls aogulatcd above, flattened on the upper side, nodulous at tho 

 angle ; the tuturea simple, the outer lip luUio-rufesccnt within. It is 

 found in the seas of New Zealand. 



Lamarck regards two living species ; so does M. Deahayes, who also 

 records one fossil, with a query, from Paris. 



Katulla (Lam.). Shell oval or oblong, depressed, having only two 

 varices situated laterally ; aperture oval ; canal short, and a sinus at 

 the union of the two lips, backwards. 



A. Xon-uuibilicatcd species. (Oenus Bufo, De Moutfort). 



Ex. K yranulaia, a Dative of tho East ludiau Ocean. 

 13. Umbilicatcd species. 



Ex. K. foliata, found in the vicinity of Mauritius. 



Itaiulla foliata. 



Jtandla have been taken on different bottoms at depths varying 

 from the surface to 20 fathoms. 



Fifty recent and 23 fossil species have been described. 



tlwrex (Linn.). Animal furnished with two long and approximated 

 tentacles; mouth without jaws, but armed with hooked denticles in 

 lieu of a tongue ; foot rounded, generally rather short ; mantle large, 

 often ornamented with fringes on the right side only ; branchiae formed 

 of two unequal pectinations ; anus on the right side, in the branchial 

 cavity ; orifice of the oviduct on the right side, at the entrance of the 

 same cavity; orifice of the deferent canal at the end of the exciting 

 organ, on the right side of the neck ; shell oval, oblong, more or le.-a 

 elevated on the spiral side, or prolonged forwards ; external surface 

 always interrupted by rows of varioes in the form of spires or ramifi- 

 cations, or simply tubercles, generally arranged in regular and constant 

 order ; aperture oval, terminated anteriorly by a straight canal, which 

 is more or less elongated and closed ; right lip often plaited or wrinkled ; 

 columellar lip often callous ; operculum horny. 



Animal or llurrz. a, operculum. 



A. Species with a very long and spiny tube. (Thorny Woodcocks of 

 collectors.) 



M. TViWu*, Linn. (Murtx ttnuitpina, Lam.). Shell ventricose ante- 

 riorly, the tube y.-ry lung, elegantly spired throughout its length, the 

 spires net in triple order, each row at regular intervals, grayish or 

 purplish gray; the spires very long, thin, rather closely set and 

 somewhat hooked ; body of the p-htll transversely sulcated and striated ; 

 the spire prominent It is a native of the Indian Ocean and the 

 Moluccas. 



This is the Venus's Comb of collectors, aud when perfect is a most 

 delicate and striking shell. 



Common Thorny Woodcock (Murez Triluliu, Linn. ; Murtz rariipina. Lam.) 



D. Species with a very long tube and without spines. (Qeuus Brontet 



De Montfort) 



M. liaiuleltitm (Snipe's or Woodcock's Head of collectors). Shell 

 anteriorly veutricose, naked, scarcely armed, fulvoua inclining to red, 

 lineated with bay; body of the shell rounded and furnMiud with 

 three or more ribs between the varices; the tube very long aud 

 slender; the spire short; mouth rounded, red. It is a native of the 

 East Indian Ocean and the Moluccas. 



Snipe'i Head, or Woodcock'j Head (Jfurtr hauttellum). 



C. Species with three elevated, flattened, and comparatively thin varices. 

 M. acanthopttnu. Shell oblong, fusiform, trialnted, transversely 



sulcated and striated, white ; the aim membranaceous ; whorls angu- 

 lated ; aperture ovate-rounded. It is a native of the East Indian Seas. 



D. Species with three ramified varices. (Qenus Chicoreui, De Moutf.) 

 Ex. M. adtuttu. It is a native of the East Indian Ocean. 



. Species which have a greater number of varices ; tube nearly closed. 

 Ex. if. regita. 



No description can convey an adequate idea of the splendid colouring 

 of this species. It U a native of the western coast of Central and 

 South America. 



P. Subturriculated species. 

 Ex. M. lyratut. 



Q. Subturriculated species ; the tube closed; a tube pierced towards 

 the posterior extremity of tho right side, and persistent upon 

 the whorls of the spiro. (Qeuus Typhit, De Moutfort) 

 Ex. M. pungent, fossil. 

 //. Species more globular ; the spire and canal shorter, very open ; 



the aperture rather wide. 

 Ex. M. rilulinit*. 

 I. Species which have an oblique fold very much anterior to the 



collumelU, and an umbilicus. (Uenus Phot, De Moutfort.) 

 Afurica have been found on different bottoms at depths ranging 

 from 5 to 25 fathoms; and species of Typhu on sandy muj at depth* 

 varying from 6 to 11 fathoms. 



