- -21:0490 Aletes squamigerus Cpr. (345). 
Orcutt 10165: Abundant, especially at Port Charlie; Vermi- 
cularia fewkesii Yates is the spiral young fide Dall. 
21:0491 Aligena cerittensis Arnold. 
 21:0492 Aligena cooperi Dall. 
118 Amiantis callosa 
636 Anachis coronata Sowerby. 
21:0493 Anomia peruviana Orbigny. (134). 
Orcutt 10151: Abundant on whale bones, stones, etc., and 
washed up on the shores of Santa Margarita Island by the thous- 
ands. Many were with the upper valve of a brilliant red color. 
21:0494 Area gigantea-Brod. 
Orcutt 10376: Puerto Viejo, very abundant, juniors. 
319 Arca (Barbatia) gradata Sby 
2613 Arca mutabilis Sby. 
21:0495 Arca pacifica Sby. 
21:0496 Arca reeveana Hanley. 
21:0497 Arca vespertilio Cpr. 
21:0498 Astralium undosum Wood. 
1380 Avicula Peruviana 
21:0499 Bullaria gouldiana Pilsbry. 
21:0500 Bullaria quoyi Gray. 
21:0501 Calliostoma eximium Reeve. 
691 Calliostoma versicolor Menke. 
21:0502 Calyptraea mammillaris Brod. 2299. 2638. 
Orcutt 10140: Thousands washed up on the bay beaches on 
both islands. 
21:0503 Cantharus elegans Gray. 
Orcutt 10278: Not rare under stones. 
21:0504 Cardium (Paphyridea) aspersum Sby. 
Orcutt 10276: Rare; occurs south to Ecuador. 
21:0505 Cassis abbreviata Lam. 
2341 Cerithiopsis (Cerithiopsis) carpenteri 
2291 Cerithium maculosum Kien. 
2292 Cerithium gemmatum Hinds. 
413 Chama pellucida Broderip. 
724 Chione undatella Reeve. 
254 Chiton (Pallochiton) lanuginosa (Cpr) Dall, 1878 
252 Chiton (Maugerella) conspicua Cpr 
2650 Columbella aurantiaca Dall. 
171 Columbella (Astyris) carinata Hds 
2330 Columbelia fuscata Sby. 
172 Columbella (Astyris) tuberosa Cpr. 
67 Conus californicus 3050 i 
2272 Conus gladiatus Brod. 
923 Cooperella scintilleformis Cpr. 
281 Corbula luteola Cpr 
2684 Cypriea Annettz 
433 Crepidula aculeata Gmelin. 
2288 Cyprzea arabicula Lam., var. 
118 Donax flexuosus i ee See 
2135 Dosinia (Dosinidia) Dunkeri Philippi. 1844. 
788 Drillia penicillata Carpenter. 
2310 Fissurella microtrema Sby. 
2311 Fissurella rugosa Sby. 
84 MHaliotis cracherodii Leach ey 
1512 Haliotis fulgens Philippi. 
