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



tiorlbns ; rujiulosa, lineis dlstantil)us spiralibus irregularitcr in* 

 scul]ita ; antV. nuclcosis ?. . . . (dL'tritis), vertice late inamillato; 

 norm, iv., rapiilius augentibus, tuniidioribus, suturis satis im- 

 pressis ; basJ TPgulariter excurvata, vix i iuiata ; apertura sul)orbi- 

 ciilari, baud coiitinua ; labro aruto; labio supra parietem obsolcto, 

 supra cobunellam arcuatam iutns onUow. operculo, antV. jv. luud 

 rapide augentibus. Long. -'Il, long. spir. 'OD, lat. "17, div. 70". 



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



May be an aberrant Assiminea. 



40. Mangelia crebricostata. 



M. testa tereti, rufo-fusca, albo zonata ; anfr. nucl. ? • . . (dccolbitis) ; 

 norm. V. elongatis, sidirotundatis, suturis ini))ressis ; costis radi- 

 antibus, obtU'-is, subrectis, circ. xv., spiram ascendentibus ; sculp- 

 tura spirali? . . . (detritJi) ; apertura pyriforini, antrorsum in ca- 

 iialem brevem attenuata ; labro postice parum siiniato ; labio con- 

 spieuo. Long. -54, long. spir. "3, lat. "2, div. 28°. 



Hab. Neeah Bay; 1 specimen {Swan). 



41. Mangelia interfossa. 



M. testa parva, Talde attenuata, rufo-fusca, marginibus spirpe parum 

 excurvatis ; anfr. nuel. ii., ut in Chrijsodomo irregularilius, apice 

 jnaniillato ; norm, vi., paruin excurvatis, hand tabulatis, suturis 

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

 tulis spiralibus circ. xv., (piarum circ. v. sou vi. in spira moustrantur, 

 angustis, supra costas transeuntibus, ad intersectioues parum no- 

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

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

 Long. "38, long. spir. •22, lat. '13, div. 25°. 



Hab. Neeab Bay; very rare {Swan). 



4.2. "^Mangelia tabidnta. 



1^1. testa parva, solidissima, luride rufo-f'nsca, marginibus spirne ex- 

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

 postice rectangulatim tabulatis, suturis impressis; costis radianti- 

 bus circ. xvi., validis, obtusis, circiter basim attciuiatam obsolctis ; 

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

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

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

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

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

 plicata. Long. -4.5, long. spir. -2(1, lat. -2, div. 35*^. 



Hab. Neeah Bay; several virorn specimens (SiiJffw). 



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

 formation of a new genua. 



242 



