Pomona College, Claremont, California 



47 



Table 5. Data for Rana pipiens 



24 26 32 



FOOD 



Mud with Navicula, Diatoma, Synedra, 

 Spirogyra, Oedogonium, Ulothrix, 

 Vaucheria, Anursea, fibers, moss 



Mud with Cladophora, Navicula, much 

 moss 



Mud with Gomphonema, Cymbella, 

 Navicula, Cocconeis, Cyclotella, Dia- 

 toma, Synedra, Meridion, Spirogyra 



Mud with Epithemia, Navicula, Acnan- 

 thidium, Vaucheria, pieces of leaves, 

 xylem spirals, broken tissue 



Mud with Nitzchia, Synedra, Pinnularia, 

 Gomphonema, Cocconeis, Navicula, 

 Cymbella, Meridion, Diatoma, Cyclo- 

 tella, Closterium, Spirogyra, Oscilla- 

 toria, Cypridopsis, plant tissue 



Diatoma, Navicula, Scenedesmus, Mou- 

 geotia 



Nothing 



Mud with Navicula, Ulothrix, fibers 



Nothing 



Nothing 



Nothing 



Nothing 



Mud with Closteriuni, Pleurococcus, fil- 

 aments, plant tissue 



Nothing 



Nothing 



Hpidermis 



Nothing 



Nothing 



Nothing 



Nothing 



Epidermis ?, Oscillatoria. Zygneina, Spi- 

 rogyra, Cladophora, Synedra, Desmi- 

 dium, Gomphonema, Epithemia, Melo- 

 sira, mandible of insect larva, shell 

 of bivalve Crustacea 



Nothing 



Epidermis 



Epidermis, Zygnema, Synedra 



Epidermis 



Nothing 



Nothing 



Epidermis 



El)idcrmis, 

 geotia 



Ilipidcrmis 



Epidermis 



Epidermis 



Epidermis 



Epidermis 



Epidermis 



Epidermis 



Epidermis, 



Epidermis 



Nothing 



Epidermis 



Epidermis 



Epidermis 



Ivpidermis 



Epidermis 



J'jiHlermil 



ICni.le 



Chlor 



Zygiiema, Ulothi 



)ps (Oscinid.x) 1. Mil 



1 . Heteroptera nymph, Jassida 

 1. Aphidids 2 

 Epidermis 

 Epidermis 

 Epidermis 



j^pidermis, Drosophilidx 1 

 Epidermis 



Epidermis, egg of Daphnia 

 Epidermis 



