438 4. ANGU1DJE 



oblique, weakly keeled, strengthened with bony plates, and 

 arranged in both transverse and longitudinal series. Num- 

 ber of longitudinal series on body 14 (rarely 14 2/2 or 16). 

 Number of transverse series between occipital plates and 

 backs of thighs varying from 44 to 53. A band of granules 

 along each side from large ear-opening to anus, usually hid- 

 den by a strong dermal fold. Ventral plates about size of 

 dorsals, smooth, imbricate, and arranged in 12 longitudinal 

 series. Number of scales from symphyseal plate to anus 

 varying at least from 56 to 62. 



The ground color above is olivaceous brown, without 

 cross-bands, but with numerous irregular dark brown spots, 

 which sometimes form longitudinal series. The head and 

 limbs are usually more or less clouded with dark brown. 

 The lower surfaces are yellowish or greenish white, often 

 slightly washed with gray, and with or without slate-colored 

 Jines between the longitudinal series of scales. 



Length to anus 90 91 96 96 102 105 



Length of tail 141 151 139 152 148 



Snout to ear 16 17 18 18 19 19 



Width of head 12 12 12 12 13 13 



Head to interoccipital 14 14 15 15 15 15 



Fore limb 21 21 23 22 23 23 



Hind limb 28 27 29 29 29 29 



Base of fifth to end of 



fourth toe 10 10 11 10 11 11 



Distribution. The Northern Alligator Lizard is a spe- 

 cies of British Columbia, western Washington, and Oregon, 

 whose range extends south to the extreme northwestern cor- 

 ner of California, in Del Norte County. 



In British Columbia, it has been found on Vancouver 

 Island (at Nanaimo) and at Sicamous, Kaslo and in Lillooct 

 River Valley. 



In Washington, it is common about Puget Sound, and 



