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342 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



CIIOROnilLUS TRISERIATUS, Wicd. 



Ejila (rheriata Princo Maximilian Koiso in das iniiorp Nord-Aincrika, i (1839), 240. 

 Jlilooutta IrineriiduH Uaird, I'rociH'd. Ac. I'liila., vii, 1S5I. p. (id. 



clarkii Uaird, /. c, and U. S. Mex. Honnd. Sinw, Kept., p. 28, PI. 37, fig. 1-U. 



C/ior«j)/(i7i(8 /ris( ('(((/lis Cope, Checli-List N. Anier. Keptil., p. :!0. 



Kvptiiitriuintlin Bonleni^er, Cat. ]5ati'. Sal. IJiil. Mils., ji. '.VA'-), \88'2. 



Hylodca maculatita Agassiz, Lake Snperior, l"*r>0, p. ;i7r<, vi, figs. 1, 2, 3. 



lu general sliaite this .specie.s is more eloiifj^ated and less squat than 

 H. fcriarum, and the hind le^^s are materially shorter. The head is eon- 

 siderably more pointed. The nostriLs, beinji a little more in advance 

 than in Feriarnm, are still over the end of the lower jaw, although tiio 

 projection of the upper jaw is greater than in the latter. The distance 

 between the anterior eanthi of the orbits is more tlian half that between 

 the rami, and this latter distance less than the ciiord of either ramus. 

 The tympanum is small, less than half the diameter of the eye ; iis an- 

 terior border on a line with the angle of the month. 



The granulation of this species is very distinct, e.\tending over the 

 whole body, except on the interior faces of the hind legs. Jt is most 

 couspicuous and distinct beneath, and is seen on the under face of the 

 arms, especially evident in the palms of thehamls. 



The tongue is rather thinner than usual in Feriarnm and free for a 

 greater distance behind, less emarginated posteriorly. The inner nares 

 are circular and nearer the anterior eanthus orbitaiis than the external 

 uostril. The vomerine teeth are considerably within and behind the 

 ceuters of the posterior nares. The eyes about as in Feriarnm. 



The forearm is a little longer than the hand. The arm from the 

 elbow is not so long as the hind foot. In general, while the thigh, leg, 

 aud tarsus are shoiter in proportion, the foot is as long as or even longer 

 tbau iu Feriarnm. Tlie leg and thigh are nearly of thesame length, ami 

 about two-fifths the length of the body. When tlie hind leg is Hexed and 

 applied along the sides, the tips of the toes reach only to the axilla-. 

 The lingers and toes are much as in 11. J'cr'mrmn, though with all the 

 limbs, more slender. 



The ground color above and on the sides is of a light ash, in most 

 specimens striped with brown; beneath yellowish-white, with a few 

 scattered brownish dots on the sides and sometimes extending across 

 the breast behind the arm.s. There is no tiansvcrsc band between the 

 eyes, but, instead, an oval spot above each orbit, and between the.se a 

 distinct stripe starting between the nostrils and extending backwiir.ls 

 to about the mitldle of the back, where it bit'iircates at a very acute 

 angle ami continues, margining the iirostyie, as it were, to near the anus. 

 On each side of this d(nsal mark is a stripe of similar width, starting 

 in a line with the orbital bhttclies, but behind them and extending 

 nearly to the groin, having a slight curve outwards to retain i)arallelism 

 with the dorsal fork. A well-delincd stripe starts at the snout and 

 passes backwards turough the eyes and tympanum over the shoulder 



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