S I G A R E T U S . 



Plate HI. 



Species 11. (^luj. Cuming.) 



SlGAltETCS INCISUS. S/ff. tedd depresskuni} ovald, spird 

 plauo-immersd, anfraclihi's spiralilcr piano - I'trath, 

 liris niimerosits, snbirrer/ularibus, interstiti'm iitcisis ; 

 a Ida. 

 The engraved Sigaretus. Siiell verv Jepresslv ovate, 

 spire flatly immersed, whorls spirally flatly ridged, 

 ridges numerous, rather irregular, interstices incised ; 

 white. 

 lid!), ilalacca. 



This is even a more flatly depressed shell than S. pla- 

 iiatus, from which it ditt'ers essentially in being elabo- 

 rately sculptured with spiral ridges. 



Species 12. (Fig. a, b, Mus. Cundng.) 



SiG.\RETiiS Cuviekiaxus. Si(/. tesld concavo-ovatd, 

 spird pared, subpronunuld, aiifraclibus s/ibveulricosis, 

 liris (cquidisluntibiis undiqiw spiraliter fiinicidutis ; 

 albd, spird earned. 



CcviEli's SiGAEETl's. Shell coucavely ovate, spire small, 

 rather prominent, whorls souiewliat veutricose, spi- 

 rally corded througiioiit with equidistant ridges, 

 white, spire tiesh-colourcd. 



Kecluz, Illus. Couch. Sig. p. IS. pi. 2. f. i. 



Hab. Isle of Panay, Philippines (in soft mud, at a depth 

 of about ten fathoms) ; Cuming. 



Sculptured with more regularity than is usual in the 

 genus, while the apex of the shell has a characteiistic 

 tinn'e of flesh-colour. 



Species 13. (Fig. a, b, Mus. Cuming.) 



SlGARETt'S Leachii. Siij. testd lati orbieuhiri, eonce.vo- 

 depresm, spird sabinunersd, aiifractibm subdeclicibus, 

 spiraliler subobsolete liratis et iiicisis ; alba, epider- 

 iiiide stramiiied iitdutd. 



Leach's Sigaretus. Shell broadly orbicular, convexly 

 depressed, spire rather immersed, whorls slisihtlv 

 sloping, spirally rather obsoletely ridged and incised ; 

 white, covered with a straw-coloured epidermis. 



Ctkay, Sowerby, Genera of Shells, No. 19. 

 Cnjptostoma Leaehii, De Blainville. 



Ilab. West Indies. 



A fine, broadly-orbicular species, delicately sculptured 

 with clearly defined though somewhat obsolete flattened 

 ridu'es. 



Species 11. (Fig. a, b, Mus. Cuming.) 



Sigaretus maculatus. Sig. tesid coiicaro-aariformi, 

 spird parvd, partim irmnersd, aiifractibus circa spirant 

 declici-cotislrictis, deiitde teiUricosis, coiiceiitrice pli- 

 catis, profuse -spiraliter Urato-strialis, slriis irregula- 

 ribiis, undidatis ; albd, ferrugineo-fusco plus minus 

 obscure interruple maculatd. 



The spotted Sigaretus. Shell coucavely ear-shaped, 

 spire small, partially immersed, whorls slopingly 

 constricted round the spire, then veutricose, concen- 

 trically plicated, profusely spirally ridge-striated, 

 striiB irregular, finely waved ; white, more or less 

 obscurely interruptedly spotted with rust-brown. 



Say, Amer. Conch, pi. 25. 



Hub. Florida. 



The shells of this genus being all more or less covercil 

 by the mantle of the animal, they have seldom any colour 

 or marking. The row of interrupted spots in this species 

 is therefore characteristic. 



Species 15. (Fig. a, b, Mus. Cmumg.) 



Sigaretus australis. Sig. iestd oblongo-auriformi, 

 spird subpruminnln, anfracldius concexis, spiraliler 

 subobsolete lenuistriatis, conceutrice subprofiise plicato- 

 striatis ; albd, rufescente-fiisco pallidi tinctd. 



TuE SOUTHERN SlGAKETUS. Shell obloug ear-shaped, 

 spire rather prominent, whorls convex, spirally rather 

 obsoletely finely striated, concentrically somewhat 

 profusely plicately striated; white, faintly tinged with 

 red-brown. 



FL\NLEY, ' Young Coiichologist's Book of Species,' frontis- 

 piece. 



Hab. South Australia and Tasmania. 



This approaches very near to S. zonalis, but dift'ers in 

 form, chiefiv in being more constricted around the spire. 



Species 16. (Mus. Cuming.) 



Sigaretus perspectives. Sig. testa suborbiculari- 

 ocatd, depressd, spird immersd, anfractibus planu-con- 

 vexis, spiraliter plano-liratis et incisis ; albd. 



Thh perspective Sigaretus. Shell somewhat orbi- 

 cularly ovate, depressed, spire immersed, whoris flatly 

 convex, spirally flatly ridged and incised; white. 



Say, Amer. Couch, pi. 25. 



Httb. South Carolina. 



Very closely allied to ^•. Leachii of the AVcst Indies, but 



more coarsely sculptured. 



AuLCUst, 1S61. 



