I 



I 



( 



rilK IJATUACIIIA OF NOUTII AMEKICA. 101) 



M. 



Loiij^tli of hind I'ciot OlOi) 



Witllli iK'twcfii nostrils 00r> 



Widtli bi'lwfcii (■.yes (I0(! 



Width of liiiid OKi 



Widtli ofKolo OtW 



D.'pth of tail at miihllo W8 



Till' iii;uiiu'r of (U'S('i-il)iiijf tlio color i)iitti'rn of this .species «li'(>eii(l,s 

 on wliiit we ii-oaitl as tlie j^rouiul. We can assume tliat the ground 

 color is represented by a dark chocolate-brown, and say that this is 

 closely studded with brownish-white spots of irrej;nlar forms and 

 sizes. On the back, limbs, and top and sides of the head the pale 

 spots are so close tojjether as to reduce the brown to a network. On 

 the l\nM-leos the p.ile spots arc lar<»er than anywhere else. The spots 

 are few on the tail, and those chielly near the base. The inferior sur- 

 tiUH's are dirty lif,ditbrown. 



Tiie characters which separate this species from C. j;<no//VM.s' are: 

 The inu(;li shorter series of vomeropalaiine teeth, the shorter lin,ners 

 and toes, the less distinct psirot id jflands, the shorter and more ob- 

 tuse head, and the coloration. 



No. IIUKJ; one specimen; Port Sinipsor Alaska, l.SSr>; Dr. T. II. 

 Streets, U. 8. Navy. 



CiroNltKOTUS ATKKKIMUS Cope* 



Ainericiin Niituriilist, 1887, \t. 88. 



.tmhhistiiiiKi iilirriminii, Co]»(', I'rot,'. Ac. IMiihi., 1^(17, ]>. 'JOl ; .Stiaiitli, Sahiiii., p. (i.'>; 

 Honliii^. r, (at. Itatr. (Jiad. Hiit. Miis., cd. ii, ls,--,>, p. 4i». 



This is a stout spe(^ies, haviiifj; a form of head intermediate between 

 that of tlu^ C. fenebrosus and .1. tiyrintim. The deidition is (piite pe- 

 (Miliar, and with the ensemble of its characters refers this species to the 

 immediate neiyldiorhood of the C. ienthiosus. 



Head a broad oval, its ••reatest width a little over three-quarters the 

 leiijith from end of muzzle to {?ular fohl, and 4.2 in same to "roin. The 

 pupil marks three-sevenths the distance from canthus of mouth to ex- 

 ternal nostril. Fissure of orbit equal lenj;th from same to nostril and 

 enters l.OU times widtli between the latter; it is contained 2.L'5 times in 

 widtli between anterior canthi of eyes. Canthus rostralis marked at 

 orbit, terminatinjjf very obtu.sely at nostril. The i)rolile descends steejyly 

 from line of latter, imt being prolonjjed, as in C. tenebrosns. Thus from 

 the line connectin}»- middle of inner nares to lip is .To external interna- 

 rial distance and .0 between anterior canthus of eyes; in C. teiwhrosus, 

 same eipials ititernarial width and .75 the distance between eyes. The 

 distances between inner and outer nares are the same; the former are 

 round. The series of palatine teeth commence oidy ojjpositc the middle 

 of the posterior marfjin of the internal nares, and describe a slight curve 



• Phitciit, li,KH. 4,5. 



'fU 



I'i 



