8 Dr. P. P. Carpenter on new Forms of Mollusca 



tioribus ; rugulosa, lineis distantibus spiralibus irregulariter in- 

 sculpta ; anfr. nucleosis ?. . . . (detritis), vertice late mamillato ; 

 norm, iv., rapidius augentibus, tumidioribus, suturis satis im- 

 prcRis; basi ipgulariter excurvata, vix rimata ; apertura suborbi- 

 cnlari, baud continua ; labro acuto ; labio supra parietern obsolete, 

 supra columellam arcuatam in) us cnlloso : operculo, anf r . iv, Kvid 

 rapide augentibus. Long. *2l, long. spir. '09, lat. *17, div. 70. 



Hab. Neeah Bay ; one specimen among Lacuna (Swan). 

 May be an aberrant Assiminea. 



40. Mangelia crebricostata. 



M. testa tereti, rufb-fusca, albo zonata ; anfr. micl. ? . . . (decollatis) ; 

 norm. v. elongatis, subrotundatis, suturis impressis ; costis radi- 

 antibus, obtusis, subrectis, circ. xv., spiram ascendentibus ; sculp- 

 tura spirali ? . . . (detrita) ; apertura pyriformi, antrorsum in ca- 

 nalem brevem attenuata ; labro postice parum sinuato ; labio con- 

 spicuo. Long. *54, long. spir. *3, lat. '2, div. 28. 



Hab. Neeah Bay; 1 specimen (Swan). 



41. Mangelia inter fossa. 



M. testa parva, valde attenuata, rufo-fusca, marginibus spirse parum 

 excurvatis ; anfr. nucl. ii., ut in Chrysodomo irregularibus, apice 

 mamillato ; norm, vi., parum excurvatis, baud tabulatis, suturis 

 distinctis ; costis radiantibus circ. xv., angustis, extantibus ; cos- 

 tulis spiralibus circ. xv.,quarum circ. v. seu vi. in spira monstrantur, 

 angustis, supra costas transeuntibus, ad intersectiones parum no- 

 dulosis ; interstitiis altis, quadratis ; basi effusa ; apertura sub- 

 pyriformi ; labro acuto, postice vix emarginato ; labio tenui. 

 Long. -38, long. spir. '22, lat. '13, div. 25. 



Hab. Neeah Bay; very rare (Swan). 



42. tMangelia tabulata. 



?37. testa parva, solidissima, luride rufo-fusca, marginibus spirae ex- 

 curvatis ; vertice nucleoso chalcedonico (eroso) ; anfr. norm, v., 

 postice rectangulatim tabulatis, suturis impressis; costis radianti- 

 bus circ. xvi., validis, obtusis, circiter basim attenuatam obsoletis ; 

 costis spiralibus in spira iii.-iv. angustis, extantibus, supra cost, 

 rad. nodosis ; interstitiis alte insculptis, subquadratis ; costis circa 

 basim circiter vii., quadratirn extantibus, interstitiis a lineis incre- 

 menti vix decussatis ; canali curta, aperta ; labro acutiore, ad an- 

 gulum posticum vix sinuato ; labio tenui ; columella obsolete uni- 

 plicata. Long. '45, long. spir. '26, lat. *2, div. 35. 



Hab. Neeah Bay; several worn specimens (Swan). 



The distinct fold near the base of the pillar may require the 

 formation of a new genus. 



242 



