Oklahoma.

Nineteen species and subspecies of turtles have been reported from Oklahoma (1-3). Turtles range throughout Oklahoma; 18 of these have their distribution primarily determined by appropriate aquatic habitats. Owing to their aquatic nature and difficulty of capture, turtles have received little study within Oklahoma. Webb (1) was the first to publish detailed range maps of reptiles in Oklahoma. He based his distribution maps on specimens he examined, museum records, published records, personal observations, and contributed field records from other herpetologists. In 1984, Secor and Carpenter (2) published distribution maps for reptiles in Oklahoma. Their distribution maps were based on Webb (1), new published distribution records since Webb, sightings by reliable observers, and records from several museums within and outside of Oklahoma. All records were put into a computer base known as DOKARRS (Distribution of Oklahoma Amphibians and Reptiles by Recorded Sightings) developed by Carpenter (4). Many DOKARRS records in Secor and Carpenter (2) and some distribution records in other publications do not indicate whether records are based on voucher specimens (specimens preserved in a museum or university). Since Secor and Carpenter, several papers have been published reporting county records and voucher specimens for turtles in Oklahoma (5-14). Sievert and Sievert (15) and Conant and Collins (3) also showed distribution maps for turtle species found in Oklahoma, but specific county collection localities wer