276 Dr. P. P. Carpenter on Pleistocene Fossils 
account of them, except that they confirm the foregoing state- 
ments in their general character. 
The following are diagnoses of the new species in Col. Jewett’s 
collection. 
Turritella Jewettit. 
7’. testa satis tereti, haud tenui, cinerea rufo-fusco tincta; anfr. 
subplanatis, suturis distinctis; lirulis distantibus (quarum t. jun. 
duze extantiores) et striolis subobsoletis spiralibus cincta; basi 
parum angulata; apertura subquadrata; labro tenui, modice si- 
nuato. 
Hab. Sta. Barbara, Pleistocene formation (Jewett). San Diego, 
on beach (Cassidy). 
This species comes nearest to 7’. sanguinea, 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. 
Bittium Pasperum. 
B. testa B. quadrifilato forma, magnitudine, et indole simili, sed 
sculptura intensiore ; eodem vertice nucleoso abnormali; sed, vice 
filorum, costulis spiralibus costas spirales superantibus, subnodu- 
losis; t. jun. costulis ii. anticis majoribus, alteris minimis ; postea 
plerumque iv. subzequalibus, interdum ii. interdum aliis inter- 
calantibus; sculptura basali intensiore; costis radiantibus sub- 
arcuatis. 
?== Turbonilla aspera, Gabb, in Proc. Acad. Nat. Se. Phila- 
delphia, 1861, p. 368. 
Hab. Sta. Barbara, fossil in Pleistocene beds; abundant (Jewet?). 
S. Pedro, S. Diego, Catalina Is. 30-40 fms. (Cooper), State Col. 
no. 591 ¢. 
Mr. Gabb informs me that his Turbonilla aspera is a Bittiwn. 
Unfortunately the type is not accessible; and as the diagnosis 
would fit 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. rugatum, under 
which I wrote the diagnosis, and which was unfortunately 
printed in the Brit. Assoc. Report, p.539. The fossil specimens 
are in much better condition than the recent shells as yet dis- 
covered. 
Bittium armillatum. 
B. testa B. aspero simili; anfr. nucl. ii. levibus, tumentibus, vertice 
declivi, celato ; dein anfr. ix. normalibus planatis, suturis impressis ; 
t. adolescente seriebus nodulorum tribus spiralibus extantibus, 
supra costas instructis; costis radiantibus cire. xiii. fere parallelis, 
i 
