THE NAUTILUS. 23 



6. Embryo of GiUia; forms assumed by fore part of foot. 



7. Shell of CHllia altUis, top view showing rapid enlarge- 

 ment of whorl. 



8. Shell of GUlia viewed from the front. 



9. Egg of Amnicola ( ? oneida) on leaf of Vallisneria. 



10. Egg of Amnicola ( ? hakeriana). 



PLEISTOCEHE FOSSILS OF HAODALENA BAT, LOWEB CALIFOBNIA, 

 COLLECTED BT CHARLES BUSSELL OBCUTT. 



BY WILLIAM HEALEY DALL. 



In a recent visit to Magdalena Bay, Mr. Orcutt obtained a 

 series of Pleistocene fossils from a deposit on Magdalena 

 Island which prove very interesting. A number of the species 

 average larger than the recent forms of the same name, others, 

 like Strombus granulatus, are uniformly smaller. Many of 

 the species have not been reported from so far north in the 

 recent state, and on the whole the assembly has a more topical 

 aspect than that of the recent fauna. One or two of the 

 largest forms appear to be new. The list follows : 



Bullaria aspersa A. Adams. Vasum caestus Broderip. 



Terebra armillata Hinds. Oliva incrassata Solander. 



Conus fergusoni Sowerby. Olivella dama Mawe. 



Conus vittatus Hwass. Phyllonotus steamsii Dall, n. 



Conus, cf. ximenes Gray. sp. 



Conus purpurascensBroderip. Phyllonotus bicolor Valenci- 



Conus lucidus Mawe. ennes. 



Conus tomatus Broderip. Phyllonotus princeps Brod- 



Surcula maculosa Sowerby. erip. 



Crassispira nigerrima Sow- Solenosteira anomala Reeve, 



erby. Patellipurpura patula La- 

 Cancellaria obesa Sowerby. marck. 



Cancellaria Candida Sowerby. Thais biserialis Blainville. 



Cancellaria cassidiformis Thais kiosquifomiis Duclos. 



Sowerby. Macron aethiops Reeve. 



Lyria (Enaeta) cumingi Arcularia tegula Reeve. 



Broderip. Strombina dorsata Sowerby. 



