166 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
The following characteristic species are confined to the Mon- 
terey-Temblor fauna: 
Scutella breweriana Remond Cancellaria condont Anderson 
Scutella merriami Anderson Conus hayest Arnold 
Corbicula dumblei Anderson Conus owenianus Anderson 
Glycimeris barbarensis Conrad Ficus kernianus Cooper 
Pecten hamlim Arnold Ficus nodiferus Gabb 
. Pecten propatulus Conrad Ficus pyriformis Gabb 
Tellina congesta Conrad Ficus stanfordensis Arnold 
Yoldia impressa Conrad Oliva californica Anderson 
Yoldia oregona Shumard Terebra coopert Anderson 
Agasoma santacruzanum Arnold Trophon gabbianus Anderson 
Bathytoma keepi Arnold Turritella ocoyana Conrad 
Bullia. anglonana Anderson Turritella variata Conrad 
In addition to the six species enumerated under the Vaqueros, 
the following species persist from the Monterey-Temblor fauna 
into the present : 
Cardium quadrigenarium Conrad Panopaea generosa Gould 
Dosinia ponderosa Gabb Phacoides annulatus Reeve .. 
Leda taphria Dall Saxidomus nuttalli Conrad 
Macoma calcarea Gmelin Solen sicarius Gould 
Macoma secta Conrad Tellina idae Dall 
Mactra catiliformis Conrad Lunatia lewisi Gould 
Metis alta Conrad Olivella pedroana Conrad 
The entire upper Miocene fauna consists of about 182 spe- 
cies known at present. Of these 26 range up from lower Mio- 
cene, and become extinct in the San Pablo-Santa Margarita 
and Etchegoin faunas; about 77 are confined to the upper Mio- 
cene; 26 range into Pliocene, and become extinct in the Puri- 
sima or San Diego horizon; 2 range into Quaternary; and 50 
persist into the Recent fauna. 
The lower division of the upper Miocene consists of the San 
Pablo-Santa Margarita-Jacalitos faunas, which are a unit, or 
nearly so—the Jacalitos being merely the upper division of the 
Santa Margarita, and both together being the approximate 
equivalent of San Pablo. The aggregate fauna of this division 
amounts to 117 species, of which 38 are still living, giving 32 
per cent of Recent forms. 
In the Etchegoin fauna there are known 111 species, with 20 
additional that existed both before and after that time, making 
131 species. Of these 51 are still living, giving 38 per cent of 
Recent species in the Etchegoin fauna. 
