124 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 85 



Bird enemies. — Following is a tabulation of the records of Reptilia 

 found in the stomachs of nearctic birds. The total number 695 seems 

 proportional to the abundance of animals of this group in the United 

 States. 



Identifications of Reptilia 



Group 



Unidentified 



Crocodylidae 



Lacertilia (further uniden- 

 tified) 



Gekkonidae 



Eublepharidae 



Iguanidae 



Anguidae 



Anniellidae 



Helodermatidae 



Xantusiidae 



Teiidae 



Scincidae 



Ophidia (further unidenti- 

 fied) 



Bipedidae 



Leposternidae 



Leptotyphlopidae 



Boidae 



Colubridae 



Elapidae 



Crotalidae 



Chelonia (further unidenti- 

 fied) 



Kinosternidae 



Chelydridae 



Testudinidae 



Cheloniidae 



Dermochelidae 



Trionychidae 



Number of 



identifications 



21 



I 



140 



47 



5 

 26 



84 

 2 

 I 

 3 



Percentage of 



identifications 



among those 



of all 



reptiles 



3-0215 



.1438 



20.1432 



6.7624 



7194 

 37409 



35-9700 



15-9707 



.1438 



12.0859 



.1438 

 .4316 



.1438 



Percentage 



of species 



of this group 



among 



North 



American 



reptiles ' 



.6494 



-9741 



.6494 



22.0796 



2.9223 



.6494 



-0325 



1.2988 



4-8705 



4.8705 



•03-25 

 •03-25 

 .6494 

 .9741 

 35-0676 

 .6494 

 5.8446 



2.2729 

 -6494 



9.7410 



2.272C) 

 .6494 



1.2988 



In commenting on the foregoing table the obvious fact is recalled 

 that our birds can hardly assume the role of predators upon turtles 

 except in the case of rather small young of these animals. This 

 limitation considered, 91 records seems fully as many as could be 



' Computed from Stejneger, L., and Barbour, T., A check list of North 

 American amphibians and reptiles, pp. 41-125, 1917. 



