From the web page for the Mammalian Species:
“Mammalian Species is published regularly by the American Society of Mammalogists with 25-30 new accounts issued each year. Each account summarizes the current understanding of the biology of a single species, including systematics, distribution, fossil history, genetics, anatomy, physiology, behavior, ecology, and conservation. The accounts vary from 2-14 pages.”PDF files of the first 739 accounts, from the Waterhouse's Leaf-nosed Bat (Macrotus waterhousii) to the Baja California Sur Deer Mouse (Peromyscus eva) are FREELY available here.
Duh! I wasn’t even aware of this publication until yesterday. Each account is a treasure trove of authoritative information for a particular species, including a list of references for further research. If I read one account a day, I would be reading these for the next 739 days and by then there would be new ones posted. So many species, so little time...
Wied’s Long-legged Bat from Mammalian Species No. 62