Abstract:
This letter from John F. Bass Jr. to Ing. Angel Roldan M. updates Roldan on Bass' collecting activities in Mexico, thanks Roldan for the collecting permit, and describes the requests of U. S. scientists for various specimens. This letter also mentions the Cuban toad Bufo peltocephalus, tree frogs Hyla eximia and Hyla regilla-opalina, and the plant fungus Cerospora musae zimm.