26 MARINE SHELLS. 
SAXIDOMUS. 
DAXIGOM US AENAIIG tees wos ee Gid. ‘ “ot 
— a0) Eee lo eee Gid..\. "°° ae 
Saxidomus nitlalie i. ot... CONT, «i 5c eo eee California 
Saxidomus squalidus.......... Desh. 3. 2 California 
SCALARIA. 
DCalariacClaymrae, cya cee a. 5s lr . Ta ee 
—“  humphreysii..... ..... KUNE. See South Carolina 
Sealariavweommamig: se 5 shoot Lam. ..... 25. ee 
Scalaria crebricostata.... ..... Cpr... ..... beeen California 
CALAIS ONIN. oie s | cow e's O) ea California 
roLGtel) FW gli igt 0 52) 0s 0 (<A ea pa a Shae. «3: -20ele California 
Sealariaghing@stt ts. 2. S188 COPS: .4\. 3. ee California 
Scalaria indianorum........... COP Hoo nee ee ee California 
= close ribbed var.. ey ee - California 
Scalaria subcoronata............ Optieess: Gove eee California 
Call al avieMe Ce cee cen eke COP » ssc lg California 
SCHIZOTH 4ERUS. 
Schizotheerus nuttalli.... ... i CONT :-.\2. oe California 
SCURRIA. 
CULT acMRuILe Ds emit to any vs TiSth «ik sates California 
SEMELE 
Semele GeECISAer. cers cs bh « Conr..Santa Barbara, California 
SEPTIFER. 
SED ELLET Di BUTCRL US aoe see eter ot ROG 2: . Thee ...California 
SERPULORBIS. 
Serpulorbis squamigerus....... ODT... foe California 
SIGARETUS. 
Nigarefus debilisss. see een kor Gd... '. a eee eee California 
Sigarelis sfayll ose t es. L, .6s. eee California 
Sigaretus perspectivus ........ Say... - 26  eeeele eee Florida 
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