320 University of California Publications in Zoology [Vol.12 



Corynorhinus macrotis intermedius, new subspecies 

 Intermediate Lump-nosed Bat 



Type.— Female, adult; no. 7753, Mus. Vert. Zool. ; Auburn, 1300 

 feet altitude, Placer County, California; July 31, 1909; collected by 

 Dr. J. C. Hawver; original no. 2387, J. Grinned. 



Diagnosis. — Similar in general characters to Corynorhinus macrotis 

 pallescens Miller and Corynorhinus macrotis toumsendi (Cooper), but 

 intermediate in color between these two forms. 



Description. — As compared with pallescens, intermedius is some- 

 what larger in general size ; ten examples of the latter form from 

 Auburn, Placer County, average 102 millimeters in length, while ten 

 specimens of pallescens from the San Jacinto region average but 97.2 

 in the same dimension. In color intermedius is natal brown above; 

 below, wood brown; membranes bone brown. 



Measurements. — A series of ten specimens from west central Cali- 

 fornia averages in millimeters as follows: Total length, 102 (97.0- 

 108.0) ; tail vertebrae, 48.6 (15.0-55.5) ; tibia, 19.7 (18.7-21.0) ; foot, 

 9.8 (9.0-12.5); forearm, 42.0 (40.2-43.6); greatest length of skull, 

 16.2 (15.4-17.1). 



Specimens examined. — Total number, thirty-two. from the follow- 

 ing localities in California: Placer County — Auburn, 23, Pioneer Cave. 

 3 ; Santa Catalina Island — Johnson Harbor, 1 ; Xapa or Sonoma 

 County — Mount Veeder, 1 (U. S. Biol. Surv.) ; Siskiyou County — ■ 

 Happy Camp. 1 (U. S. Biol. Surv.) ; San Benito County — Bear Valley, 

 2 (U. S. Biol. Surv.), Hernandez, 1 (Calif. Acad. Sei.). 



Distribution. — The evidence at hand indicates that this bat occupies 

 a geographic position intermediate between that of pallescens and that 

 of toumsendi, namely the semi-arid and semi-humid portions of the 

 Upper Sonoran zone in California west of the desert divides. 



Transmitted October 6, 1914. 



