348 BULLETIN 34, UNITED STATKS NAlTONAL MUSEUM. 



CHOKOPniLUS OCULAUIS Holl.iook. 



Houlciigor, Cat. Datr. Sal. Hrit. Miia., lH-^-2, p. :i:a 



Byloihn ocularis llolSrook, N. AiiitT. Hiti.. 1st »■(!., ii, 71), PI. .\iv, 1838; ami 2il ed., 



IV, 18li. 

 IltilH ocitUiriH Lc Confc, Proceed. Ac. Pliila., is")!, p. »',><). 

 Chotophiliin angiilatufi Cope, Clieck-Lisf Hatr., lieptil.. N. Amor., 187.'), p. 30. 



Eyes large; bead aciito; lower Jaw narrow; tibia rather more than 

 half leuf,'th of body, decidedly longer than hind foot; terminal knobs 

 well developed. Above <'he.stnnt, with an obscure darker dor.sal band 

 from snout to eye, bifurcating behind, and another on each side. Tliese 

 usually more or less obsolete; a mu(;h deeper dark chestnut vitta from 

 snout tlirough eyea»!;l {ympanuni,aIony the sides; below this is a distinct 

 white line; a lijjht line along the outer edge of the tibia. 



This species, which appears to be the smallest of the genus, and in- 

 deed the smallest of all the North American ecaudate IJatrachia, has a 

 close generic relationship to the otiier species. Its most .striking features 

 will be found in the large >i7X' of the eyes, the acuteness of the head, 

 the small tongue, etc. Tiu^ tibia is longer tiian in any of the genus. 



The head is more pointed than usual, a character best seen in the 

 lower Jaw; which, instead of being regularly rounded, has the rami 

 nearly straight for two tiiirds, then acutely rounded, almost \/-'^''"pe*^' 

 The tongue is small, ovate, entire behind, and free for half its length. 

 The vomerine teeth are not distinguishable. The tympanum is very 

 small, .scarcely perceptible, and less than half the diameter of the eye. 



The limbs are well developerl, comjtared to the other species. The 

 tibia is rather more than half the liMigth of the body. 



General color above dark chestnut, with an obscure dorsal stripe of 

 darker from the snout to the postcriiU' portion of the back, bifurcating 

 behind. On each side of this is a similarly obscure hi.rii)e, while a much 

 deeper and more tlistinct stripe extt'uds along the shU^ of the head, 

 through the eyes, and along the Hanks. IJelow this, on the edge of the 

 upper jaw, is a white line, extending beyond the shoulder, lieneath 

 yellowisii-white, with ob.scnre dark spots across the breast and chin. 

 Faint indications oftransver.se bamls across the thighs and legs, more 

 decided than in the other si)ecies. The outer edge of the tibia is oc(!U- 

 pied by a distinct light lim*, on the inside of which is a darker mottling. 



In general it is distinguishable from all the allied species by its acute 

 lower jaw, chestnut color, and light line down the outer edge of tibia. 



McasuremeutH, hi inches. 



Total leiiKth r.4 i.iKI Himlfoot 2() .40 



Tibia 33 ..'.1 lllml leg l.dit 1.70 



Foiniir 30 .47 Wiilth of lower jaw IH .28 



Hind log from hool 4t) .7"i Chord ai .33 



HL* 



No. 3585; 3 specimens; Charleston, S. C; C. Girard. 



