IOWA ACADEMY OP SCIENCE 
207 
CONTRIBUTIONS TO THE HERPETOLOGY OP IOWA, II. 
BY ALEXANDER G. RUTHVEN. 
The herpetology of Iowa is still so little known that material from the state 
is greatly to be desired, particularly K it comes in the form of extensive col- 
lections from particular localities. The writer has, through the kindness of 
Prof. H. W. Norris of Grinnell College, been able to examine such a collection 
from the vicinity of Grinnell, Poweshiek County, and the results seem to be 
of sufficient interest to warrant publication. 
The species with authentic data are few in number and evidently represent 
only very incompletely the reptile-amphibian fauna of the region, so that the 
affinities of the latter cannot as yet be discussed. As was to be expected, how- 
ever, both eastern and western forms are represented. 
LIST OF SPECIES.* 
Amliy stoma tigrinum (Green). Two specimens. 
Bufo americanus LeConte. One specimen. 
ChoropMhis nigritus triseriatus (Wied). One specimen. (The heel reaches the 
tympanum when the leg is extended along the side.) 
Hyla versicolor LeConte. Two specimens. 
Acris gryllus LeConte. Two specimens. 
Liopeltis vernalis (DeKay). Six specimens. 
Lampro'peltis doUatus (Linnaeus). One specimen without data. Prof. Norris states 
that it occurs about Grinnell. 
Storeria dekayi (Holbrook). One specimen. 
ThamnopMs radix (B. & G.). Thirty-one specimens. 
ThamnopMs sirtalis parietalis (Say). One specimen. 
Tropidonotus sipedon (Linnaeus). No specimens examined but Prof. Norris states 
that he has observed the species at Grinnell. 
Elaphe vulpinus (B. & G.). One specimen. 
PityopMs catenifer sayi (Schlegel). Two specimens. 
Lampropeltis getulus sayi (Holbrook). One specimen from Columbus Junction, 
Louisa County. Prof., Norris states that he has seen two specimens killed at Grinnell. 
Bascanion constrictor flaviventris (Say). Three specimens. Two are typical flavi- 
ventris being pale brownish olive above and bright yellow beneath. The third, although 
not in good condition, was evidently decidedly darker above and less yellowish be- 
neath, being intermediate in color between the pale color phase of constrictor and 
flaviventris. 
Sistrurus catenatus (Rafinesque). No specimens examined, but Prof. Norris states 
that the species is found about Grinnell. 
*The specimens are from Grinnell unless otherwise stated. 
