es 

 wJ 

 H; 



00 



4n 



E 

 E 

 B 



( 



<iru 

 Cai 

 rail 



354 BULLETIN \H, UNITED STATES NATIONAL MU.SEUM. 



On each side of the back, ami in tbo center of the space between the an. 

 terior and posterior bifurcations, is a very short line, generally i)arallel 

 in direction with the branches of the posterior fork. There is also a 

 V-shaped line connecting the eyes (the apex behind), and a short longi- 

 tudinal one above the snout. There is a narrow dark line from the snout 

 to the eye, and another dusky tympanal vitta from the eye over the arm 

 along the sides ; this line is deej)est on its upper edge, and more or less 

 obsolete on its lower; sometimes it is not distinct beyond the ar.n. The 

 edge of the .jaws is mottled, leaving the ridge lighter above; scarcely 

 distinct as a lino. Sometimes a broad vitta may be said to pass from the 

 snout through eye and tympanum ; indistinct below. The legs above are 

 barred transversel^'^ in narrow lines, and the whole upper parts finely 

 sprijdvled with dark points. The posterior faces of the thighs are mar- 

 morated or blotched with yellowish, on a brown ground ; the anterior 

 faces are plain. The outer edge of the soles and heel is mottled brown. 

 The gular sac of the male is purplish-brown in the spring. 



The species varies considerably at times in the tint of the body, being 

 of all shades to reddish-brown. The marks on the back are sometimes 

 quite broad and coarse, instead of being narrow and more linear than in 

 other specimens. The gular sac is quite extensible and in spring is 

 brown. Sometimes the throat and breast are spotted with brown. 



n. picker inyii has mox'e resemblance to U./vminutlh than to any other 

 species. This has the dorsal blotches, however, much coarser and never 

 arranged as above described ; nor are the peculiar circular light spots 

 on a brown ground on the i)08terior face of the tliighs I'ver seen in 11. 

 piclceringii. From young specimens of II. versicolor it may be distin- 

 guished by the narrow lines of the distinct dorsal cross and the slighter 

 web of the hind feet, with tlie absence of the light spot on the jasv, as 

 well as by the position of the vomerine teeth and the form of the muzzle. 



h 



I'Ki. SH. Ili/li iiickeriii'jii. No. aOOX. HusIdii, Ma-is 

 Mriimut iniiil>t nf \ii. ;jtl(ll(. 



M. 



Lcn^rtli of lio.'ul ami bmly O'iM 



LoiiHtli of head to poHti'iior cili^f of tviiipana tKl'.l 



Width of head at iio.stcrior I'd^rc ofl yiniiana (Hit 



L('iij;tli of anterior Iliiili from axilhi oi(> 



L)Mi;rtli of po.slcrior liiiih from j^roiii o)r> 



L»Mif;tli of tibia OIT. 



LoiiRlli of larnus j^ oo-ir. 



Loiigtli of rcHt of foot Ol;{ 



Ilahits. — This, our most abundant eastern species, is much more gen- 

 erally known by its voice than appearance. After the rattling of the 

 Acrin gnjUm in the marshes and river banks in the lowlands is fairly 



1 



/• 



