http://cars.er.usgs.gov/Amphibians_and_Reptiles/job_announcement/job_announcement.html

http://research.amnh.org/swrs/volunteers.htm

http://www.cnah.org/jobs.asp

These research experience for undergraduate (REU) programs are great opportunities for undergrads. A couple are listed on that cnah.org site. Google 'REU NSF Herpetology' and related keywords and perhaps you'll find more.

Here's a word of advice too - be sure to proofread your application. It is also not a bad idea to get help from a professor on putting together your application.

Best,

Mike