For this report, data has been obtained from 2829 preserved frogs, 42
skeletal preparations, 8 lots of tadpoles and young, and 4 lots of
eggs. Much of the material was collected in our independent field
work, which has extended over a period of 11 years.
Measurements were taken in the manner described by Duellman (1956).
Osteological data were obtained from specimens that were cleared in
potassium hydroxide, stained with alizarin red, and stored in
glycerine. Recordings were made by means of Magnemite portable tape
recorders (Amplifier Corp. America). The calls recorded by Fouquette
were analyzed on a Sonagraph (Kay Electric Co.) at the University of
Texas; those recorded by Duellman were analyzed mainly on a Vibralyzer
(Kay Electric Co.) at the University of Kansas and in part on a
Sonagraph at the University of Southwestern Louisiana. Sample calls
were analyzed on all three instruments; the slight differences in
results were found to be less than the error in measurement, so the
data from all sources were combined without correction. The techniques
and terminology of the calls are those defined by Fouquette (1960a,
1960b).
In the accounts of the species we have attempted to give a complete
synonymy. At the end of each species account the localities from which
specimens were examined are listed alphabetically within each state,
province, or department, which in turn are listed alphabetically
within each country. The countries are arranged from north to south.
Localities preceded by an asterisk (*) are not plotted on the
accompanying maps due to the crowding of symbols that would have
resulted. Abbreviations for museum specimens are listed below:
AMNH --American Museum of Natural History
ANSP --Academy of Natural Sciences of Philadelphia
BMNH --British Museum (Natural History)
BYU --Brigham Young University
CAS --California Academy of Sciences
FMNH --Field Museum of Natural History
KU --University of Kansas Museum of Natural History
MCZ --Museum of Comparative Zoology
MVZ --Museum of Vertebrate Zoology
SU --Stanford University
UIMNH--University of Illinois Museum of Natural History
UMMZ --University of Michigan Museum of Zoology
USC --University of Southern California
USNM --United States National Museum
UU --University of Utah
TCWC --Texas Cooperative Wildlife Collection
TNHM --Texas Natural History Museum