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with this species, described without locaUty in the quoted works. The brown band is only faintly 

 visible in one specimen. Unfortunately the specimens are dead, partly worn shells, so it cannot 

 be made out if they have really lived at the great depth of 522 M. 



16. Cerithium adunctim Gould. 



Gould. Proc. Boston Soc. Nat. Hist. Vol. Ill, 1849, p. 119. 



Reeve. Conch. Ic. Vol. XV, Cerithium, fig. 56 [dorsuosum) fig. 57 [aduncum). 



Tryon. Man. of Conch. Vol. IX, p. 139, PI. 26, fig. 96, 97. 



KOBELT. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Cerithium, p. 103, PL 20, fig. 9, 10. 



Stat. 50. Bay of Badjo, West coast of Floras. Up to 40 M. Mud, sand and shells. 1 1 Spec. 



According to Reeve, the only difference between C. aduncum and dorsuosum should be, 

 that in the former the outer lip is ridged, being smooth in dorstiosnm. Now, as the very old 

 specimens from the above locality have the outer lip smooth, the younger ones have it ridged, 

 with every grade between them, I think they ought to be united, as for the first time has been 

 done by Tryon, afterwards by Kobelt on Tryon's authority; the "Siboga "-specimens are less 

 humped, than the figure of adtmcum, the colour also agrees with Reeve's dorsuostim^ but in 

 size and in shape of upper whorls, they come nearer to his aduncum. 



1 7 . Cerithium sedrtmt Kiener. 



KlENER. Coq. Viv. Vol. IV, Cerithium, p. 71, PL 25, fig. 4. 



Reeve. Conch. Ic. Vol. XV, Cerithium, fig. 136? 



Tryon. Man. of Conch. VoL IX, p. 138, PL 26, fig. 78—82. 



Kobelt. Martini-Chemn. Conch. Cab. Ed. II, VoL I, Cerithium, p. 220, PL 39, fig. 7 — 10. 



Stat. 215. North point of Kabia-island. Reef, i Spec. 



Reeve's locality "Gallapagos-Islands" makes it doubtful, if he had in view the true C. zebrum. 



18. CeritJmtm pauxillum A. Adams. 



A. Adams. Proc. Zool. Soc. Lond. 1854, p. 86. 



Reeve. Conch. Ic. Vol. XV, Cerithium, fig. 144. 



Tryon. Man. of Conch. Vol. IX, p. 141, PL 34, fig. 95. 



Kobelt. Martini-Chemn. Conch. Cab. Ed. II, Vol. I, Cerithium, p. 228, PL 40, fig. 8. 



Stat. 144. Laiwui, North coast of Obi Major. 23 M. Coral-bottom and Lithothamnion. 3 Spec. 

 Stat. 285. South coast of Timor. 34 M. Limit between mud and coral. 19 Spec. 



Though the specimens have a fourth row of nodules on each whorl, in contradiction to 

 the original description of Adams, who says "triseriatim granosis", they belong no doubt to the 

 species under consideration, as they have been compared with the types in the British Museum 

 by Mr. E. A. Smith; the shell has a tendency to be banded with fulvous above the suture, 

 the fourth series of nodules is smaller and so may have been overlooked, moreover I see a 

 few intermediate lirae especially on the last whorl. There is a single varix on the left side of 

 the bodywhorl and another bordering the aperture externally ; the whole shell is covered with 

 fine growth-striae, only visible under a strong lens. 



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