12 Dr. P. P. Carpenter on new Forms of Mollusks 



peripheriam ornata ; basi quoque rufo-fusca, valde prolongata, 

 regulariter excurvata; anfr. nucl. ii., tumidioribus ; norm, viii., 

 planatis, suturis baud conspicuis ; varicibus nullis ; apertura valde 

 elongata ; labro vix sinuate ; labio vix calloso. Long. '17, long. 

 spir. -12, lat. -05 poll., div. 20. 



45. Opalia crenatoides. 

 0. testa turrita, alba, marginibus spirae rectis; anfr. nucl.?, 



% norm, vi., compactis, attingentibus ; costis radiantibus circ. x., in 

 spira plerumque obsoletis, ultimo anfractu validioribus, latis, baud 

 exstantibus, attingentibus, spiram lineis fere rectis ascendentibus ; 

 suturis inter costas altissime indentatis ; carina obtusa basali, su- 

 turee continua ; inter costas radiantes undique, ut in suturis, iu- 

 dentata ; costis interdum, propter lirulas spirales subobsoletas, sub- 

 nodosis ; columella baud umbilicata ; basi antice leevi. Long. '54, 

 long. spir. -38, lat. '23 poll., div. 30. 



Additional specimens may connect tbis with tbe Portuguese 

 0. crenata. 



46. Truncaria eurytoides. 



T. testa parva, turrita, gracili ; albida, ssepius fascia circa peripberiam 

 maculis fusco-aurantiacis picta ; anfr. nucl. mamillatis, laevibus ; 

 norm, v., effusis, subplanatis, ultimo paulum constricto ; costulis 

 radiantibus circ. xx., aperturam versus evanidis ; apertura sub- 

 quadrata ; labro baud incrassato, interdum intus subtiliter striato, 

 baud dentato ; labio appresso ; columella abrupte truncata. 

 Long. -3, long. spir. '2, lat. -11 poll., div. 23. 



Variat basi fusco tincta, seu tota superficie ut in Nitidella cribraria 

 picta. 



47. Sistrum (? ochrostoma, var.) rufonotatum. 



8. testa S. ochrostomati simili, sed minore, angustiore, vix tabulata ; 

 alba, linea punctorum rufo-fuscorum subperipberiali, interdum 

 lineis spiralibus, interdum ejusdem coloris maculis, ornata ; vert, 

 nucl. mamillato, anfr. iii., Isevibus, vix tumidis ; norm, v., plus 

 minusve elongatis, in medio nodoso-angulatis, postice planatis, 

 suturis ad angulum valde obtusum conspicuis ; seriebus nodulorum 

 spiralibus iii., quarum postica major, secundum costas radiantes 

 obsoletas circ. vi.-viii. ordinatis ; seriebus anticis inconspicuis ii. ; 

 interdum costulis spiralibus intercalatis ; canali brevi, rectiore, 

 aperto, angusto ; apertura subovali, vix subquadrata, intus pallide 

 aurantiaca ; labro acutiore, dorsaliter subvaricoso, postice ssepe 

 sinuato, intus obscure vi. -dentato ; labio conspicuo, interdum ex- 

 stante. Long. '5, long. spir. "23, lat. '32 poll., div. 60. 



Variat testa obesa, nodulis validis. Variat quoque testa acuminata, 

 nodulis subobsoletis. Long. '52, long. spir. '23, lat. '25 poll., 

 div. 42. 



48. INitidella millepunctata. 



IN. testa parva, nitida, livida ; spira exstante, anfractibus subpla- 

 natis, suturis distinctis ; anfr. nucl. Isevibus, adolescentibus obso- 



220 



