52G REPORT— 18G3, 



Gray. Mr. Xuttall only bi'oii<rlit home yoiinp specimens of tliis extraordirarr 

 shell. In its adult state it a.«f!unie3 either a transvei,-e form ( ='"/«'.?; <>r 

 the elonfrated condition, redescribed in a fossil state as new. Betwet n 

 tht se there is every gradation, as cnn be traced in the magnificent series in 

 the Smiths. Mus. ; and a caskful of the animals in spirits, of various ages, 

 lias affiliated the large shells to the original Nuttallian specimens.] 



10. Pandora punctata [is a Clidiophora. The series so named in the Nuttallian 



collection belongs, however, to the Atlantic CI. trilimafa']. 



11. Solcciiiius lucidus [is almost certainly the young of no. 12. The amount of 



obliquity in the mtemal rib is e.^tremelv variable in the adult spei-inicns]. 



12. Soh'cuiius Xuttallii [^ = Mach(era patida, \)\\on, = Aldus {/rnndig, Umel., teste 



lids, in Mus. Cum. Mr. C.'s "grundis, var.," from Monterey, suits in its 

 proportions for the adult of S. lucidus. The shell has been widely distri- 

 Duted bv commerce, and appears to extend far in a northerly direction. Tlie 

 animal is very beautifully fringed]. 



14. Solvciirtm CaUfornianus [_=S. Dombetji, tei^te Mus. Cuming: non Hani. MS.]. 



15. P»ammolia lui-ijica [is a IL'tcrodana.v, probably identical with the W. Indian 



JL hiinaculata, which is found abundantly in its niimy varieties at Aca- 

 pulco •, = Tellina vidua, C. B. Ad.]. 



17. Sauf/uinolana Californiana [^ = JIacoma inconspicua, Brod. & Sby., and is a 



northern snieciesj. 



18. Sanf/uinulana ruhroradiata [is the young of a large species of Fsammoma']. 



22. TilUiia altu [ = (froni types) ? Scrc^jictdaria hiangidafa, Cpr.]. 



23. [ = Mdcoma edulis, Nutt. ; a northern variety of M. sccta, no. 25, and quite 



distinct from M. cdentuh.~\ 

 20. Tlie locality is not continued, and is probably erroneous. 



27. [Dr. Gould considers his D. ohestis a distinct species ; from a large series, it 



appears identical.] 



28, 29. [These species of Standella, described from young specimens, were tound 



of very large size by Dr. Cooper, with what may prove a third sp'H-ies, 

 perhaps S. nnsuta, Gld., olirn.'j 



"Ob. Tdricola carditoides [with P. arcnafn-^rylindracra, Desh., are varieties of P. 

 Cidifornica. The series preserved in the Smithsonian Museum connects all 

 the extreme fonns]. 



32. Mf/sia tumida, Conr. 5lS. [ = I}{plod(mta orbrlla, Gld., and belongs to the section 

 Spharella, Conr. The label had been assigned by accident to a young valve 

 of a Chione, probably from the Sandwich Is.]. 



83. Tajx's stammea. [This is the extreme southern form of a widely diffused and 

 very variable species, of which the nonnal condition is Saxidonnm Pet if it, 

 Desh.,= Venus rigida, (ild. piars. The principal varieties have been nnmed 

 Tapes diversa, Sby.= Venus mundtdus, Rve., and Venttsruderata, Desh.] 



JJ4. [The Cal fomian Saxidomi divide themselves into three gi-oiips : the large, 

 southern, oval, grooved shells = 6'. aratus, Gld. ; the subquadrate, compara- 

 tively smooth, nortliem shells = <S'. sqtmlidus+ffigantei/s, Desh.; and an 

 intermediate fonn, which is the true S. Tiuttallii, Conr. Some of Mr. Nut- 

 tail's specitnens were, however, the young of S. aratus, of which the adult 

 w.as not known till very recently.] 



85. [The young of this Pachydesma is " Trigona stultorum, Gray," Desh^MS. in 

 British Museum.] 



30. Cyiherea callosa [ = C. nohilis, Eve. It is not a Dosinia, but the type of a new 

 subgi^nus, Aminntis, differing from CaUista as Mei-cenaria does from Venus']. 



S7. Plate li», fig. It! (not 14 nor 15). [The true Venus NidtaUii of Conr. (teste 

 Conr. ips. and types in Mus. Phil. Ac. and Jay) is not the shell here cata- 

 logued, which generally goes by that name, but is a synonym for the V, 

 Californiensis, TjYod.,=:succincfti, Viil. The error was corrected in the Mus. 

 Cum. in time for the right shell to be figvired by Reeve in his recent mono- 

 graph. It is doubtful what name Conrad intended for the shell here cata- 

 logued, which belongs to the group oiStutchhuryi,Jlucfifraga, &c. Ifrenlly 

 distinct from the latter, it may stand as Chione callosa, Sby. jun. (nouConr.)] 



S3. Venuii Californiana [(teste Conr. ips.) was intended for V. Californiensis, 

 Brod. Not having access to the type, it could hardly be recognized by the 



12 



