1. Southwest Fisheries Science Center; National Marine Fisheries Service; NOAA; 8901 La Jolla Shores Drive La Jolla California 92037 U.S.A
2. Santa Barbara Museum of Natural History; Department of Vertebrate Zoology; 2559 Puesta del Sol Road Santa Barbara California 93105 U.S.A
3. Natural History Museum of Los Angeles County; Section of Mammals; 900 Exposition Boulevard Los Angeles California 90007 U.S.A