Marsupial Frogs: Gastrotheca & Allied Genera. By William E. Duellman; with osteology by Linda Trueb. Baltimore (Maryland): Johns Hopkins University Press. $120.00. xviii + 407 p.; ill.; index. ISBN: 978-1-4214-1675-5 (hc); 978-1-4214-1676-2 (eb). 2015.