86 



University of California Publications. [Geology 



JSchmophorus JSchmophorus lucasi 



Femur 



occidentalis 

 Recent 



Average of 

 Five Specimens Maximum 



Type 



Total length 



43.8 mm. 



47.7 49.0 



48.0 



Transverse diameter through 









proximal end 



13.8 



14.5 15.0 



14.6 



Transverse diameter through 









condyles 



14.4 



15.3 15.5 



15.3 



Transverse diameter through 









center of shaft 



5.0 



6.1 6.7 





Sagittal diameter through cen- 









ter of shaft 



6.0 



7.4 7.6 



7.5 



Tarsus 





2S, occi- 

 dentalis 



Cotype of 

 M lucasi 



Length from intercotylar tuberosity to external 





trochlea 





70.0 mm. 



74.6 



Sagittal diameter through head region 



14.1 



13.8 



Transverse diameter through head region 



12.2 



12.0 



Transverse diameter through trochlea 



8.0 



8.3 



Least transverse diameter of shaft 



3.3 



35.0 



Coraeoid 





IE. occi- 

 dentalis 



Cotype of 

 JB. lucasi 



Total length on inner border 





44.5 mm. 



47.7 



Least transverse diameter of shaft 



4.1 



3.8 



ERISMATURA JAMAICENSIS (GMELIN). 



Tli is ubiquitous little duck seems to have been rare in the 

 Pleistocene fauna of the Fossil Lake region. It is not mentioned 

 in Sehuffeldt's report on the extensive collections examined by 

 him. It is represented in the collection from Fossil Lake by a 

 single bone, a perfect tarsus. 



The specimen at hand corresponds perfectly in every respect 

 with the corresponding bone of a Recent specimen from the Cali- 

 fornia Museum of Vertebrate Zoology. 



The fact that this species is very much at home at present over 

 practically the whole of North America suggests a species in the 

 prime of its vitality. Its rarity in the Pleistocene collections 

 suggests that it is either a comparatively young species, or else, 

 having been but recently added to our fauna from without it has, 

 like some ill-advised introductions by the hand of man, responded 

 to a release from limiting environment and spread over the land 

 to possess it. 



