Merriam Little Known Kangaroo Rats. 143 



Perodipus* goldmani sp. nov. 



Tt/pc 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 J. Goldman. Original No. 431. 



Characters. Size large, nearly as large as venustus, but tail shorter and 

 ears smaller. Coloration intermediate between the paler agilis 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 flanks ; dusky marks at base of whiskers and 

 on ankles large and conspicuous. 



Skull. Similar to that of tularensis, but nasals and premaxillae broader. 



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

 hind foot, 46. Average of 8 from type locality : Total length, 313 ; tail 

 vertebrae, 185 ; hind foot, 45.4. 



Perodipus agilis 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 agilis; tail slightly longer. Skull similar, 

 but maxillary arches more strongly developed, more broadly spreading, 

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

 recurved angle ; premaxillse 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 panamintinus (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 premaxillse narrower, outer angle of maxillary arch more 

 prominent, bullee 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, 1 15, 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 



