collected at Cape St. Lucas. 47 
-rimulam umbilicalem formante. Long. -07, long. spir. ‘04, lat. 
‘03 poll., div. 40°. 
42. Odostomia (Evalea) delicatula. 
O. testa tenuissima, alba, diaphana, nitente, elongata; margini- 
_ bus spiree eleganter excurvatis ; vert. nucl. levi, globoso, decli- 
viter immerso ; anfr. norm. iii., subplanatis, suturis impressis ; 
liris subacutis, spiralibus, quarum v. in spira monstrantur ; inter- 
stitiis latis, undatis, creberrime decussatis ; basi elongata ; aper- 
tura oblonga, peritremate haud continuo ; labro tenui; labio vix 
conspicuo; plica juxta parietem exstante, declivi. Long. *075, 
long. spir. ‘04, lat. °03 poll., div. 30°. 
43. Chrysallida angusta. 
C. testa parva, satis elongata, nitida, alba, sculptura minus expressa; 
marginibus spires parum excurvatis; vert. nucl. parvo, subito 
immerso, dimidium truncationis tegente ; anfr. norm. v., planatis, 
elongatis, suturis minus impressis; costis radiantibus circ. xiii., 
plerumque lineis continuis marginibus utrinque parallelis, circa 
basim productam obsoletis; lirulis spiralibus angustis, in spira 
circ. y., interstitiis decussantibus, supra costas haud nodulosis ; 
apertura ovali; peritremate parum continuo; labro tenui, trans- 
lucido ; labio tenui; plica juxta parietem parva, obtusa. Long. 
"095, long. spir. °065, lat. ‘028 poll., div. 20°. 
44, Kulima fuscostrigata. 
E. testa minore, gracillima, albida, striga latiore Mhfo-fusca supra 
peripheriam ornata; basi quoque rufo-fusca, valde prolongata, 
regulariter excurvata; anfr. nucl. ii., tumidioribus; norm. viii., 
planatis, suturis haud conspicuis; varicibus nullis; apertura valde 
elongata ; labro vix sinuato; labio vix calloso. Long. °17, long. 
spir. ‘12, lat. ‘05 poll., div. 20°. 
45, Opalia crenatoides. 
O. testa turrita, alba, marginibus spire rectis; anfr. nucl.?....; 
norm. vi., compactis, attingentibus ; costis radiantibus circ. x., in 
spira plerumque obsoletis, ultimo anfractu validioribus, latis, haud 
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, in- 
dentata ; costis interdum, propter lirulas spirales subobsoletas, sub- 
nodosis; columella haud umbilicata ; basi antice levi. Long. °54, 
long. spir. 38, lat. °23 poll., div. 30°. 
Additional specimens may connect this with the Portuguese 
O. crenata. 
46. Truncaria eurytoides. 
T. testa parva, turrita, gracili; albida, seepius fascia circa peripheriam 
maculis fusco-aurantiacis picta; anfr. nucl. mamillatis, levibus ; 
