For most specimens obtained after 1980, additional information regarding circumstances of their recovery and necropsy can be obtained from the TMMSN, 4700 Avenue U, Building 303, Galveston, Texas 77551.
The authors thank Elsa Haubold, Ann Bull and Graham Worthy, of the TMMSN, for assistance in obtaining biological data for a number of these specimens; John McEachran for the loan of calipers to measure skulls; Bernd Wursig for travel assistance to T.