620 Appendix to Part II 



which this new genus may be known and distinguished from its 

 allied genera are as follow : — 



Testa ventricosd, suhglobosd, spird hrevi, anfractibus postice ad 

 suturas adpressis ; aperturd magna, ovali ; canali postico 

 angusto ; antico lato, rejiexo ; labio externo postice incrassato, 

 antice tenuiore, dente brevi, sulco dorsali idoneo, prope anticam 

 partem posito ; labio columella,™ incrassato, expanso, postice apud 

 canalem crassiore. 



Gasteiditjm Cepa.— PI. IV. figs. 68, 69. 



Gastridium testa cepaformi, laevigata, antice spiraliter sulcata, labii 

 externi margine antico crenato : long. 23 ; lat. 1*7, poll. 



Navidad, Chile. 



Tebebka costellata. — PI. JTV. figs. 70, 71. 



Terebra testa turritd, Icemusculd, anfractibus medio tumidiusculis, 

 postice lined impressd obsoletd notatis, costellis numerosis longitu- 

 dinalibus, elevatis ; aperturd columeUdque Icevihus. 



The number of volutions and the proportions cannot be given, 

 for there is only a single fragment of this species. 



Navidad, Chile. 



Teeebea ekdflifeka. — PL IV. figs. 72, 73. 



Terebra testa elongato-turritd, Ueviusculd, lineolis undulatis longi- 

 tudinalibus confertis, posticis fortioribus, tectd ; anfractibus 

 plurimis, postice tumidiusculis, lined impressd subobsoletd, medio 

 subconcaxis ; aperturd subr/tomboided, columella Icevi. 



There are only two fragments of this species, it is obviously 

 impossible to ascertain the number of volutions or the propor- 

 tions. 



Navidad, Chile. 



VOLUTA TEIPLICATA. — PI. IV. fig. 74. 



Toluta testa elongato-oblongd, spird attenuatd, anfractibus senis 

 spiraliter confertim striatis, ad suturas adpressis, deinde 

 tuber culatis,iuberculis in costas antice decurrentibus ; aperturd 

 oblong a, longitudinem spires cequante ; columella triplicatd,plicis 

 obliquis, subcequalibus: long.2"2o; lat. 0*9, poll. 



This species is placed among the Volutes, because the posterior 

 or upper folds on the columella are rather smaller than the 



