IOWA ACADEMY OF SCIENCE 
205 
LIST OF SPECIES. 
1. JR ana pipiens Sclireber. — Leopard Frog. This is the common 
frog of the region. It was found principally in the sloughs, hut was not 
uncommon in the meadows and even on the prairie. 
2. Btifo americanus Le Conte. — American Toad. The American toad 
is of general distribution in the region studied. The eggs are laid in the 
]:>onds and sloughs, and soon after the young are hatched they are found 
in the grassy margins of the sloughs and along the shores of the lakes 
and ponds. From here many of them work into the meadows and upon 
the upland prairies. The larger individuals are more abundant in the 
meadows, in the groves on the uplands, and in the timber zones on the 
shores of the lakes and streams. 
3. ChorophiluS’ nigritus triseriatus (Wied). — Swamp Tree Frog. The 
northwestern Iowa specimens are referred to this form, as the snout is 
produced, and the hind limb is short — the heel barely reaching the tympa- 
num when the limb is extended along the side. The species is apparently 
rare in Clay and Palo Alto counties, and only a single specimen was 
found by the expedition. This individual was taken in the grass near a 
small pond on the prairie in Freeman township. The only other individ^ 
uals observed in this region by the writer was in 1903, when they were 
found to be not uncommon in a stubble field just north of the locality 
where the above mentioned specimen was taken. 
4. Acris grylliis Le Conte. — Cricket Frog. This frog was only found 
in one locality — in the eastern part of Riverton township. Clay county. 
Here large numbers were observed on the mud in abandoned channels of 
the Oeheyedan river. Probably owing to the habitat, most of the speci- 
mens are so dark as to obscure all of the markings, but in some the spots 
on the limbs may ])e made out, and the usual light stripes on the sides of 
the head are rei)resented by small markings on the margin of the upper 
jaw. 
5. Amhy stoma tigrinum (Green). — Tiger Salamander. Two large in- 
dividuals of this species were found in the cellar of a house in Highland 
township, Palo Alto county. It is not an uncommon species in the re- 
gion. The writer has occasionally found it in the abandoned holes of the 
Spermophiles. 
6. Eumeces septentrionalis (Baird). — Northern Skink. This speci- 
men is apparently rather rare in Clay and Palo Alto counties. It was 
found on the uplands and in the higher meadows, but only very rarely. 
Individuals were observed in Highland township, Palo Alto county, and 
