REPORT—18638. 
' Acila castrensis. Cat. Is., 40-60 fm. (Also Puget Sound, Kennerley.) 
. Leda cuneata, teste Hanl. Mont.—S. Diego; Cat. Is., 10-60 fm. 
. Leda hamata, n.s. Santa Barbara; Cat. Is., 20-60 fm. ; common. 
. Verticordia ornata, D’'Orb, Santa Barbara ; Cat. Is., 20-40 fm. [Exactly ac- 
cords with the Japanese species, novemcostata, teste A. Adams. 
. Bryophila sctosa. (Cape St. Lucas, Xantus.) Identified from tracing, no. 980. 
. Lima orientalis (in Mus. Cum.,= dehiscens, Conr., teste Cooper). Mont.—San 
Diego; Cat. Is., beach to 20 fm. ; common. 
Limatula subauriculata. 40-120 fm., Cat. Is.; not rare: 1 valve in 4 fm., San 
Diego. [Exactly agrees with British specimens. | 
. Janira dentata. Monterey, 8. Diego, beach to 20fm. (Also Cape St. Lucas, 
Aantus.) 
Cavolina telemus. Cat. Is.; dead in 30-60 fm. (Also Vancouver, Lyall.) 
. Tornatina carinata, 8. Diego. (Also Mazatlan, Reigen.) 
. Pedipes liratus. 8S. Diego. (Also Cape St. Lucas, Xantus.) 
; Dentalium (var.) Indianorum. Mont. 
é Cat. Is., 20 fm.; common. [ Probably 
a striated var. of pretioswm, which Sowerby doubtfully, and Dr. Baird con- 
fidently, affiliate to D. extale. | 
. Dentalium semipolitum. S. Diego. (Also La Paz.) 
. Dentalium hexagonum. 8. Diego. (Also W. Mexico.) 
. Acanthochites avicula,n.s. Cat. Is,, 8-20 fm. ; rare. 
. Acanthopleura fluxa, n.8. Cat. Is, 
. Ischnochiton veredentiens, n.s. Cat. Is., 10-20 fm. 
Ischnochiton (Lepidoplewrus) pectinatus, n.s. Cat. Is., beach. 
. Ischnochiton (Lepidopleurus) scabricostatus, n.8. Cat. Is., 8-20 fm. 
. Ischnochiton (Trachydermon) pseudodentiens. 8. Diego. (Also Puget Sound, 
Kennerley.) 
2. Ischnochiton (Trachydermon) gothicus, n.s. Cat. Is., 8-20 fm. 
. Leptochiton nexus, n.s. Cat. Is., 20-80 fm. 
. Nacella (?paleacea, var.) triangularis. Monterey. 
. PNacella subspiralis. Cat. 1Is., 10-20 fm. [May he the young of the long-lost 
Patella calyptra, Mart. ; unless that be a broken Crepidula adunca. | 
. Scurria (? var.) funiculata. Monterey ; rare. 
. Puncturella cucullata. Monterey. (Also Puget Sound, U. 8. E. E.) 
. Punctwrella Cooperi,n.s. Cat. Is., 30-120 fm. ; not rare. 
. 2Imperator serratus, ??n.s. Monterey ; Cat. Is., 10-20 fm. [Dr. Cooper thinks 
this shell probably the young of Pomaulaz. | 
. PLeptonyx bacula, u.s. Cat. Is., beach, dead. 
. Gibbula optabilis, n.s. 8. Diego. 
. Calliostoma supragranosum, n.s. 8. Diego. 
. Calliostoma gemmulatum, u.s. 8S. Diego. 
. Calliostoma splendens, u.s. Mont. ; Cat. Is., 6-40 fm. 
. Margarita (?var.) salmonea. Mont. ; Cat. Is., 6-40 fm. [Intermediate be- 
tween wrdulata and pupilla. | 
. Margarita acuticostata. Mont.; Cat. Is., 8-20 fm. [Fossil, Santa Barbara, 
Jewett. | 
. Solariella peramabilis, ?n.s. Cat. Is., 40-120 fm. ; living. [Differs but slightly 
from S. aspecta, Japan, A. Ad.] 
. Ethalia supravallata, n.s., and Pyar. invallata. S. Diego. 
. Liotia fenestrata, n.s. Cat. Is., beach to 40 fm. ; dead. 
. Liotia acuticostata, n.s. Mont.; Cat. Is., 10-20 fm. 
. Crepidila excavata, var. jan. Santa Barbara Island. 
2. Galerus contortus, n.s. Mont.—S. Diego, 20-40 fm. 
3. Hipponyx serratus. Santa Barbara Island; 1 sp. Maz. Cat., no, 346. 
. Cecum crebricinctum, 1.8. Mont.—S. Diego; Cat. Is., 8-20 fm. 
5. Cecum Cooperi, ns. 8. Diego. [Two fine species of the Anellum 
group. 
. Turritella Cooperi, n.s. 8. Diego; Cat.Is.; common. [May tie identical 
. E.] 
with one of Conrad’s imperfectly described fossils in P. R. E 
. Mesalia tenuisculpta, n.s. S. Diego; shoal water. 
