1914] Miller: Bird Remains from the Pleistocene of San Pedro 35 



PUFFINUS OPISTHOMELAS Coues 

 The species is represented by a single, almost complete tarso- 

 metatarsus badly worn. The proportions correspond perfectly with 

 Recent specimens at hand. Perhaps no other sea-bird is more com- 

 monly found cast up on the beach in the Southern California region 

 today than is Puffinus during the migration seasons. P. griseus 

 leads in point of numbers, creatopus and opisthomelas being far less 

 numerous. It is interesting to note that the only Puffinus found in 

 this Pleistocene beach formation represents a species far less abund- 

 ant today than are others of the genus. 



FULMAETJS GLACIALIS (Linnaeus) 

 The genus is represented by a single carpometacarpus in perfect 

 preservation. The specimen corresponds in every particular with 

 the same bone in the Recent Fulmarus glacialis glupischa. 



PHALACEOCOEAX near PENICILLATUS (Brandt) 

 A poorly preserved femur in the collection corresponds, in so far 

 as its characters are determinable, with the same segment in the 

 Recent species. The species represented probably did not differ 

 materially from our Brandt cormorant of today. 



ANAS PLATYEHYNCHOS Linnaeus 

 A single tibia almost complete represents this species. The dimen- 

 sions correspond almost absolutely with those of a female specimen 

 at hand. 



NETTION CAEOLINENSE (Gmelin) 

 A perfect right humerus, the distal end of a left humerus, and a 

 carpometacarpus unquestionably belong to this species. An imper- 

 fect specimen of the tarsometatarsus of an immature duck represents 

 a species of about the same size as the teal. Positive assignment of 

 this specimen to the present species would suggest its breeding in the 

 region at the time of deposition of the San Pedro, a conclusion open 

 to serious question. Arnold finds the molluscan fauna of these beds 

 most closely allied to the fauna of the Mexican coast two hundred or 

 three hundred miles to the southward and infers the prevalence of 

 a warmer climate during the Pleistocene. Nettion is one of the more 

 positively migratory ducks of the San Pedro vicinity today and would 



