} 



Tin; liATKAClllA OF .\ OK I'll AMEltlCA. 



231 





aborted brancliiii;, as (xjciirs in the case oF the other two in Siren laver- 

 thia. The limbs are short and weak, and their length enters that from 

 their base to the end of the nuiz/!e two and a half times. The hiteral 

 toes are st'iierally of e(iiial lenj;th, and the median one is a little longer. 

 All areacnte at the extremity. 



The skin is entirely smooth, and there are thirty -fonr transverse grooves 

 betwe^'n the axilhe and the vent. The crosi^-grooves are continued on 

 the tail, so as to be distinct for two-thirds of its length. The tail is but 

 little compressed for the proximal three fonrths of its length, the ver- 

 tical section being vertically oval or lenticular posteriorly. A narrow 

 dermal free border commenc^es at the end of the proximal tilth of its 

 length and increases in width to the til), but is never as wide as in the 

 Siren laccrtiiui and in the Xei;tniiis and Ciyptobianchns. The inferior 

 deinial bonier is less extensive, existing only on the terminal fifth of 

 tiie tail. The tail is relatively longer th.'n in the ISi-ren laccrtiiui. The 

 Ibllittles of the skin are large, and so close together as to give the sur- 

 face a reticulated a[)pearanee. There are no distinct mucou« pores of 

 a dee[)er character. 



a ^-^ / 6 



I'l'.. .'iS I',, iiiliiliiinirhiiy .■'lriiif<'!< : No 7010: twii'c iiatiirnl Ni/.o ; (ij:. 5, xix. 



Miusiirrwviift ol' ."id.")!. 



M. 



Total icnjilii 152 



l.r :|;,'lli lo .•:i(t ul' vclll 087 



I. .11^ 111 lo axilhi oi:{ 



l.cii^itli to liiM liiiiiicliia 010 



I.iiijrii, to eye 00'^') 



Lcllfrlll to lilt us Oli-i 002 



I.niKlli of rou-l.';; ... 004 



I, flint !i of lor,' loot 0015 



Width of head ij;rcalc.st ) 006 



Willi h bclwccii i\cs OO:? 



Will 111 ol' ('xtfiiiicil fore liiiilis 01;') 



The general cofor is (thocolate brown, more or le.ss tinged with lead- 

 (!olor. especially when the epidermis is fn sli. A rather wide yellow 

 band commeiuies at the last branehia and extends along the side to 

 lU'ar the end ()f the tail. It is continued, but less distinctly, from the 

 branehia' forwards to the end of the muz/.le. A narrower band com- 



i 





