from Sta. Barbara, California. 8 



account of them, except that they coiiticin the foregoing state- 

 ments in their gener.il character. 



The following are diagnoses of the new species in Col. Jewett's 

 collection. 



Turritella Jeweltii. 



T. testa sati* tereti, haml tenni, cineroa nifo-fn^co tincta ; anfr. 

 subjilanatis, siituris distinctis; linilis distaiitihiis (([uanun t. jun. 

 diiae extantiores) et striolis subobsolelis (i[>iralil)us cincta ; basi 

 parum angulata ; apertura subquadrata ; lai)ro teuui, niodice si- 

 nuato. 



Hub. Sta. Barhara, Pleistocene formation [Jewett). San Diego, 

 on beach [Cussidy). 



This species comes nearest to T. sanr/idnea, Rve., from the 

 Gulf, but differs in the faintness of the sculpture. Mr. Cassidy's 

 specimens may be washed fossils, or very poor recent shells. 



Biltium "iai^perum. 



B. testa B. qundrifilato forma, magiiitndine, et indole simili, sed 

 scu'iptura intcnsiore ; eodr-m vertice nncleoso abiiormali ; sod, vice 

 filorum, costulis spiralibus costas s|)irales suijerautiijiis, suljiiodu- 

 losis ; t. jun. costulis ii. anticis niajoribus, alteris iniuimi.* ; |)ostea 

 pleruiiKjue iv. sul)te(pialibus, interduui iii. interdum aliis inter- 

 cnlautibus ; sculptura basali intensiore ; costis radiaiitibus sub- 

 arcuatis. 



? =: Turboailla a/^pera, Gabb, in Proc. Acad. Nat. Sc. Phila- 

 delphia, 18G1, p. 3(i8. 



Hdb. Sta. Barbara, fossil in Pleistocene beds; abundant (7i°//W/'l. 

 S. Pedro, S. Diego, Catalina Is. 30-J.O fms. [Cooper), State Col. 

 no. 591 c. 



Mr. Gabb informs me that his Turbonilla aspera is a Bif/ium. 

 Unfortunately the type is not accessible; and as the (Uagnosis 

 would tit several closely allied species, it cannot be said with 

 precision to which it rightfully applies. As this is the com- 

 monest of the group, it is presumed that it is the " Turbonilla'* 

 intended. Should the type, however, be recovered, and prove 

 distinct, this shell should take the name of B. rurjntnin, under 

 which I wrote the diagnosis, and which was unfortunately 

 j)rintcd in the Brit. Assoc. iU'port, p. 539. The fossil specimens 

 are in much better condition than the recent shells as vet dis- 

 covered. 



Bittium armilhttwn, 



B. testa B. aspero simili ; anfr. nncl. ii. hevibus, tnmentibns, vertice 

 deelivi, celato ; dein anfr. ix. nonnalibns planatis, suturisiinpressis; 

 t. adolescente seriebus nodiilorum tribus spiralibus cxtantibus, 

 supra costas iustrnetis; co-^tis radiantibus circ. xiii. fere paralleli.-, 





