THE NAUTILUS. 



131 



Washed up on the beach after storms, alive or very fresh. 



Amiantis callosa, Conr. Metis alta, Conr. 



Chama exogyra, Conr. Modiolus flabellatus, Gld. 



Charna pellucida, Sby. Modiolus rectus, Conr. 



Cryptomya californica, Conr. Paphia tenerrima, Cpr. 



Glottidea albida, Hds. Periploma discus, Stearns. 



Macoma secta, Conr. Periploma planiuscula, Sby. 



Mactra hemphilli, Dall. Siliqua lucida, Conr. 



Mactra planulata. Solen rosaceus, Cpr. 



Dead shells collected on the beach. 



Bathytoma tryoniana. 

 Dentalium neohexagonum,S&P. 

 Epitonium hindsii, Cpr. 

 Sinum debilis, Gld. 

 Turritella cooperi, Cpr. 

 Epitonium bellastriatum, Cpr. 

 (fragment). 



Anomia peruviana (upper 

 valves). 



Labiosa undulata, Gld. (bro- 

 ken 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. 



Acmaea patina, Esch. Lasaea rubra, Mont. 



Acmaea persona, Esch. Myrina diegensis, Dall. 



Littorina planaxis, Nutt. Mytilus californianus, Conr. 



Littorina scutulata, Gld. 

 Cypraeaspadicea,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 un- 

 determined) has been found in a kelp holdfast and a dead 

 Polynices lewis with 7 Crepidula excavata, Brod. on it washed 

 in after a storm. 



Most of the shells listed above were collected by Mr. and 

 Mrs. E. P. Chace within the last three years. The others were 

 collected by Mrs. J. E. Herbst, Valentine Herbst and Otto 

 Keim, and were collected during the same period of time. 



