OF MOT.TXSKS FROM MAZATLAN. 27^ 



223. The length should be M. 



fiU). For " lalno nvlln " read " tenidssimo " 



S'H) Tlie miplcar shell has two whorls, Ampu'laria-fhapei. 



3()7. Add to diai^nosis, '• opcrci'fo conravc, linca ilivnfit suturam dcfinienfe" 



S<W. Add to diagnosis, ''openulo vix concaio, sufiir/x ^/laii'.s (lijiniti»." 



37'>. Add to diagnosis, "opcrcido concaio, siifun's (linfuuftx, jxr/jJicrian 

 Vfrsiis lutea clevata iiistructis." The species was found living among the smal 

 OlireUcp. 



;57ti. Add to diagnosis, " opcrculo concave, siduris vix dcfimtis." Living 

 among OUvtlhe. 



501 Instead of the specimen from which the description in the text wa 



written, tablet 100(5 contains a much finer shell, since found, which al'owsof th 



following additions to the diagnosis: — " rerf nucl.parvo, satis cxfnnfe. dech 



i vifer sifo ; avjr norm, v ; infersififiis cnrinarnm irunsversim rugulusis ; labr- 



tolidiore. Long. (IS7, long, spir O^u, lat. -Oo^." 



510. A very beautiful shell, found in the refuse of Professor Adams's Panam 

 collection, is probably of this species, though the sutural cancellations are close 

 It has one more whorl • vertex Cheuiiutzoid, of three Helicoid whorls, scarcely 

 projecting ; apex hidden 



050. From perfect Cape St. Lucas specimens, add the following to diagnosis 

 — " epiihrmide fimbriafa, liridas ap/raics ehganfer dccussante." 



Page 312. Add to the diagnoses of opereula of Vcriiiefida- — 



"{h.) Operculum, corneum, infus convcxum, nifidtan, ttmhoiie magno exta-nte 

 mcfns concavum, paucis^ irak, lamina extanfe sitfuras dcfinitnfc Diam. •045." 

 Tablet 2.")37 contains the only specimen found, rcsemblin;j Siphonium, froa 

 the »S/io'rtrfy/«s-wasliings. 



Tablet 447 is Liocardium apicinvm, which sliould stand as species 709. 



Pai:e 314. note * {ef fcq.), for " Injlafulum" read " Miuccrat," 



td^ti oD'.l, line lS>,/or "regular"' read '"irregular." 



261 



