Mcrridni — Little Known KdiKjaroo J\<ltx. 143 



Perodipus goldmani sp. nov. 



Ttjpe from Salinas, mouth of Salinas Valley, Monterey Co., Calif Young- 

 adult male, No. 118,924, U. S. National Musuem, Biological Survey Collec- 

 tion. September 4, 1902. Luther .7. Goldman. Original No. 431. 



Chitnict('r,'<. — Size large, nearly as large as ceiiu)<l(t><, but tail shorter and 

 eare smaller. Coloration intermediate between the paler agiiis and the 

 darker venustus. Upperparts finely mixed dusky and buffy ochraceous, 

 resulting in a drab-brown which covers the head and back, becoming 

 grizzled ochraceous on the liauks; dusky marks at base of whiskers and 

 on ankles large and conspicuous. 



Skull. — Similar to that of tnlnrermis, but nasals and premaxillas broader. 



Measurements. — Type specimen: Total length, 312; tail vertebrae, 185; 

 hind foot, 4(). Average of 8 from type locality: Total length, 313; tail 

 vertebras, 185 ; hind foot, 45.4. 



Perodipus agiiis tularensis subsp. nov. 



Type from Alila, Tulare Co., California. Adult female. No. 127,158, U. S. 

 National Museum, Biological Survey Collection. June 23, 1903. Luther 

 J. Goldman. Original No. 563. 



Characters. — Externally like agiiis; tail slightly longer. Skull similar, 

 but maxillary arches more strongly developed, more broadly sjireading, 

 broader antero-posteriorly on outer side, and developing a prominent 

 recurved angle; pi-emaxillte longer on top of skull (alongside nasals), con- 

 stricting nasals more abruptly just behind anterior third ; sides of fronto- 

 parietal shield less parallel (approximating anteriorly). The skull resembles 

 that of pana)ninti)ms (with which it agrees in size), but differs strikingly in 

 the nasals, which are shorter, and anteriorly are broader and more abruptly 

 spreading. The supra-occipital is narrower than in panamintinus, allowing 

 the bullae to come nearer together. Externally panamintinus is much paler. 

 The skull of tularensis compared with that of venustus is slightly smaller, 

 nasals and i^remaxillaj narrower, outer angle of maxillary arch more 

 prominent, bullae less produced posteriorly. 



Remarks. — Specimens are at hand from Alila and Tejon Canyon. 



Measurements. — Type specimen : Total length, 308 ; tail vertebrae, 182 ; 

 hind foot, 41. 



Perodipus montanus utahensis subsp. nov. 



Type from Ogden, Utah. Adult male. No. 55, 115, U. S. National Museum, 

 Biological Survey Collection. July 15, 1893. Vernon Bailey. Original 

 No. 4085. 



Characters. — Similar to montanus, but hind foot slightly smaller and 

 decidedly more slender ; upperparts less fulvous and more drab or clay 



