THE BATRaCFIA OP" NORTH AWEKICA. 153 



eye. Both upper aud lower palpebrse are transparent, a feature pecu- 

 liar to this species. 



The pores of the skiu are large and on all the upper surfaces closely 

 placrd; on the sides more distantly. Tlie mucous pores on the head are 

 distinct and large. They form a double series along the canthus ros- 

 trails, and a single one above tlie orbit, which turns round the latter be- 

 hind, and is cont'mued below it and along the side of the muzzle to the 

 nostril. A series of similar large pores extends along the middle of each 

 side, one a little in front of the median point of the intercostal spaces. 

 The tail is compressed from the base, and not elevated ; it carries a strong 

 free dermal border along the median line above on the distal two thirds; 

 a narrower dermal margin exists on the inferior distal half. The limbs 

 are short aird weak, but the digits are well developed. The posterior 

 extended forwards measures 4.5 intercostal intervals; the anterior 

 measures backwards 4J of the same, counting the axillar. The pha- 

 langes number on the posterior feet 1-2-3-3-2; on the anterior, 1-2-3-2; 

 the terminals are quite acuminate, especially behind, where in one indi- 

 vidual tliey have a slightly corneous sheath. There are 17 costal folds 

 and an axillar space. The tail is not ainiulate. 



The rictus of the mouth measures nearly the diameter of the eye 

 behind it. The tongue is small and free all round, except at the anterior 

 margin and along the median line to the glossohyal pedicel. The 

 vomerine teeth extend behind the nares in two series, which are con- 

 vex posteriorly; they approach each other as though at an angle 

 directed anteriorly, and then suddenly curve backwards and form the 

 pterygoid series. These are more slender and more nearly approxi- 

 mated than in any other species, aud consist each of but one row of 

 teeth to the point where they begin to diverge ; i. e., near the posterior 

 I)art of the globe of the eye. They do not diverge widely and exhibit 

 but a few series of teeth. 



f 



I ' 2 



4- S / 



¥iG. 36. Stereochilus marginalus. No. 3907. Georgia; §. 



The color is a delicate yellowish-brown, with numerous brown lines 

 interspersed, which form several dark bands along the side. A nar- 

 row dark line extends from the orbit to near the axilla. A narrow 

 yellow line, brown-bordered above and belosv, extends from axilla to 

 groin. The tail, belly, and gular region are closely brown- specked; 

 similar specks occur on the sides of the head behind. The ground color 

 of the belly is yellow. 



