104 



THE NAUTILUS. 



Collected on the Sandbars and Beach near the Entrance 

 of the Bay. Alive. 



Tivela crassatelloides, Conr. 

 Turris ophioderma, Dall. 



Bursa californica. 

 Donax levigata, Desh. 

 Murex festivus, Hds. 



Washed up on the Beach After Storms, Alive or 

 Very Fresh. 



Amiantis callosa, Conr. 

 Chama exogyra, Conr. 

 Chama pellucida, Sby. 

 Cryptomya californica, Conr. 

 Glottidea albida, Hds. 

 Macoma secta, Conr. 

 Mactra hemphilli, Dall. 

 Mactra planulata. 



Metis alta, Conr. 

 Modiolus flabellatus, Gld. 

 Modiolus rectus, Conr. 

 Paphia tenerrima, Cpr. 

 Periploma discus, Stearns. 

 Periploma planiuscula, Sby. 

 Siliqua lucida, Conr. 

 Solen rosaceus, Cpr. 



Dead Shells Collected on the Beach. 



Bathytoma tryoniana. 

 Dentalium neohexagonum, 



S. & P. 

 Epitonium hindsii, Cpr. 

 Sinum debilis, Gld. 

 Turritella cooperi, Cpr. 

 Anomia peruviana, (upper 



valves). 



Labiosa undulata, Gld. (broken 



valves). 

 Mactra catilliformis, Conr. 

 Panopea generosa, Gld. 

 Pecten giganteus, Gray. 

 Thracia plicata. 

 Yoldia cooperi, Gabb. (valves 



only). 



Collected on the Piles of the Bridge Across the Entrance 



of the Bay. 



Lasaea rubra, Mont. 

 Myrina diegensis, Dall. 

 Mytilus californianus, Conr. 



Acmaea patina, Esch. 

 Acmaea persona, Esch. 

 Littorina planaxis, Nutt. 

 Littorina scutulata, Gld. 

 Cypraea spadicea, Gray. (1 

 only). 



Occasionally a rock washes in on the beach containing some 

 Lithophagus plumula, Cpr. and Kellia laperousii, Desh., and 

 the kelp brings in Acmaea incessa, Hds. Eulima (species unde- 

 termined) has been found in a kelp holdfast and a dead Poly- 



