478 University of California Publications in Geology [Vol. 10 



DESCRIPTION OF MATERIAL 

 Insectivora 



SCAPANUS, possibly n. sp. 



A humerus and a ramus of the mandible without teeth are the only 

 remains of moles found at Hawver Cave. Unfortunately the ramus 

 is too fragmentary to be of any value in the specific determination of 

 this form. The humerus, no. 21143, is slightly larger than humeri of 

 Scapanus latimanus occultus. In posterior aspect no. 21143 differs 

 from humeri of the Recent Scapanus latimanus latimanus and of 8. I. 

 occultus in possessing a longer entepicondylar notch. The head of 

 the humerus is noticeably more compressed laterally in the cave speci- 

 men. It is possible that this specimen from Hawver Cave represents 

 a form specifically distinct from Scapanus latimanus. 



Measurements of Humerus, no. 21143 



Greatest length ctl3.3 mm. 



Greatest width 10.4 



a, approximate. 



Carnivora 



CANIDAE 



Both the wolf and coyote types are found in the fissure deposit. 

 A caleaneum and a metapodial allow only of an approximate deter- 

 mination of the larger form. It is not known that the tarsal and 

 metatarsal elements belong to the same individual. 



CANIS, near DIEUS Leidy 



A caleaneum, no. 21472, is longer than average specimens of Canis 

 dims from Rancho La Brea. The cave specimen (fig. 1) is larger 

 also than the caleaneum of C. pambasileus examined. In certain 

 characters, held in common by C. dirus and C. pambasileus, no. 21472 

 differs from both. Thus the tuber calcis is compressed laterally, 

 which causes this process to be quite thin anteriorly. The large 

 inner facet for the astragalus has the largest diameter transverse, 

 while in the caleaneum of C. dirus and in that of C. pambasileus this 

 diameter is fore and aft. In no. 21472 this facet is rather distantly 

 situated with reference to the cuboid facet. The articulating face 

 for the cuboid is subcircular in form and is of larger areal extent 

 than that in C. dirus, especially in its anteroposterior diameter. In 



