Z 
° 
. Body Tail 
29 «44 
29 37 
27 (37 
af: 36 
28 «48 
28 42 
28 50 
25 45 
27. 45 
29 «44 
28 «48 
28 843 
ae 35 
27 38 
26 8640 
27 40 
25 37 
26 36 
27 =o 
2. 34 
25 34 
27-33 
28 32 
26 32 
27. 30 
22 30 
23 28 
27 28 
28 «24 
28 22 
me 20 
28 «20 
23 20 
22 18 
23 15 
26 «15 
at. 15 
26 «15 
22 14 
28 13 
as? 6 12 
27 12 
23. «12 
20 12 
25 11 
tab | 
23 10 
28 10 
25. - 10 
23 9 
24 9 
27 ) 
22 9 
25 9 
24 8 
Pomona College, Claremont, California 47 
Table 5. Data for Rana pipiens 
Mouth 
tadpole 
Ali. Can. 
tadpole, 
Forelegs Lot 
530 
360 
150 
none 
present 
1 
e 
Rhee 
NNER pp 
Cl el el el el el ce ce cl el el oe OO el el oe SO ld 
Dee et et bk pet 
FOOD 
Mud with Navicula, Diatoma, Synedra, 
Spirogyra, Oedogonium, Ulothrix, 
Vaucheria, Anurza, 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, Nayvicula, 
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 Closterium, Pleurococcus, fil- 
aments, plant tissue 
Nothing 
Nothing 
Epidermis 
Nothing 
Nothing 
Nothing 
Nothing 
Epidermis ?, Oscillatoria, Zygnema, 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 
Epidermis, Zygnema, Ulothrix, Mou- 
geotia 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Enidermis 
Ipidermis, small snail ? 
Epidermis 
Nothing 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Epidermis 
Chlorops (Oscinide) 1, Muscide 1, Culi- 
oe ile Heteroptera nymph, Fase 
Aphidide 2 
E shigedie 
Epidermis 
Epidermis 
Epidermis, Drosophilide 1 
Epidermis 
Epidermis, egg of Daphnia 
Epidermis 
