THE BATRACHIA OF NORTH AMERICA. 



351 



are characteristic of the whole region, occurring east of the Central 

 Plains to the Atlantic, and from British America to Florida and Texas. 



H. regilla of the Pacific district extends its range from British 

 Columbia to Cape San Lucas and into New Mexico and Northern 

 Mexico, presenting considerable variation in characters. 



With regard to the distribution of this genus in the Eegio Neotropica, 

 a synopsis had already been given under the head of the family. But 

 two species occur in the West Indian district, and these are both in 

 Santo Domingo only. The species of the outlying distiicts are: 



Mexican. 



H. uranochroa. 

 H. ebraccata. 

 H. bistincta. 

 H. nigropunctata. 

 H, elaeocliroa. 

 H. salvini. 

 H. gabbii. 

 H. nigripes. 

 H. staufferi. 

 H. eximia. 



H. sordida. 

 H. pbaeota. 

 H. molitrix. 

 H. splendens. 



Colomlian. 



H. puma. 



H. qiiiuquevittata. 



H. microoepliala. 



H. punctariola. 



H. gracilipes. 



H. miotympanum. 



H. sj)ilomma. 



H. curta. 



H. pulverata. 



H. labialis. 

 H. punctariola. 

 H. rhodopepla. 

 H. licbenosa. 



H. vasta. 



H. pulchrilineata. 



West Indian. 

 I 



Chilian. 

 H. zebra. 



In all but two of the species which I have examined the vocal sacs 

 are present; they communicate with each other posteriorly in H. fusca 

 and Smilisca baudinii. The adhesion of the integument is opposite the 

 middle of the tongue in these species; in H, carolinensis, opposite the 

 posterior end. In H. leseureii and H. curta the vesicles are wanting in 

 the males. 



I. Fingers entirely free ; fascicles of vomerine situated posterior to a line connect- 

 ing the interior nares. 

 Three phalanges of fourth toe free ; upper lip not spotted ; thigh with a few 



brown specks behind ; no distinct lateral stripe H. pickeringli, 



II. Fingers entirely free ; vomeiine fascicles between the internal nares.* 

 a. Three phalanges of fourth toe free from web. 



Upper lip with a dark border; a dark lateral band on body ; thigh unicolor 

 behind ; a vocal vesicle S- regilla. 



* In H. squirella the vomerine patches sometimes project posterior to the line 

 connecting the nares. 



