Mar. 1899. MAMMALS OF THE OLYMPIC MOUNTAINS ELLIOT. 271 



very broad and wide. Chin white, extending beyond corners 

 of mouth. This mark varies in extent among individuals ; soles 

 of feet white, rest of markings similar to latifrous. The general 

 color, however, is a clear black, without any brown tinge so 

 perceptible in latifrons. The tail vertebrae is shorter, as is 

 also the pencil, but the skull is larger. My comparison is 

 made with the topotype (No. 57317 <?), from Eugene Oregon, 

 22d Nov., 1893, kindly loaned to me by Dr. Merriam. 



Cranial characters : The skull of the topotype is badly damaged, 

 making comparisons somewhat difficult, and so I give below 

 measurements of six specimens of S. olympica, and also those 

 given by Dr. Merriam of latifrons, from Roseburg, Oregon, and 

 Chehalis County, Washington, in the N. Am. Faun., Pt. 4 (1890.) 

 The skull of the present species, compared with that of its near- 

 est relative, is longer and broader, with a much greater curve 

 of the outline of the occipital region, with a deep indentation 

 at the posterior termination of the sagittal crest. This barely 

 rises above the plane of the skull. The frontals are longer 

 and the nasals shorter, with longer palatal bone, and pterygoid 

 fossa. The bullae are less inflated. The basi-occipital and basi- 

 sphenoid are wanting in the latifrons skull, so no comparison 

 can be made with them. The back molar is apparently nearer 

 the palatal notch in latifrons than in olympica. 



Type: Lake Southerland, Olympic Mts., Clallam County, 

 Wash., 1 8th Oct., 1898. 



Measurements: Total length, 320. mm. ; tail vert. , 104 ; pencil, 

 60 ; hind foot, 41. 



From 6". phenax this new form differs in being smaller gener- 

 ally, the white stripes and markings narrower, shorter and less 

 broader lateral line, widening as it goes to the back, a bushy tail, 

 and differently proportioned skull. 



Six examples : The Lagune, near Port Angeles, i ; Lake 

 Southerland, 5. 



The figures show upper and under side of skull of S. olympica, 

 and for comparison the upper surface of S. latifrons, all of natural 

 size. The very different dimensions of the two species can be 

 seen at a glance. The greater breadth of ^". latifrons and the 

 occipital outline, merely a slight curve, is strongly contrasted 

 with the rather narrow skull, and deeply emarginated occipital 

 outline of S. olympica. 



