1 



tllK HATRACIIIA Or NORTH AMERICA. 25 



ficjlr the they are frequently shorter. In two specimens from Kinj^ston, lTp[»er 



ireoliftlis Caniula, tlu'y exceed the length of the mnzzle, but this is very seldom 



V fall and the ease. 



posteiior The tunj;ue does not reach the symphysis of the lower jaw, and is 



3d wilinn obtusely rounded in front. It is considerably free anteriorly. The in- 



1, and the ternal nostrils are an oblique slit on each side, which lies oblicjuely and 



posterior ojjposite to the interval between thevomeiine and pteryj^'oid teeth, 



oslte side Tiie i)remaxili.iiy teeth are in two straight divergent series, which unite 



at a rounded angle in front, which would be, if completed, a little less 



than a right angle. Each side usually contains eleven teeth, but there 



h are sometimes thiiteen and in one huge specimen (No. S'AH)) lllteen 



M teeth. The vomerine series is parallel within the premaxillaiy, forming, 



f like them, an obtuse angle anteriorly. There are twelve or thirteen 



teeth on each side, but sixteen in the large specimen (No. H.ICJO). Imme- 

 diately posterior to the>e and at a short interval, the pterygoid series 

 !7) commences. It is slightly convex outwards, and embraces usually six 



if tei'h, rarely live, and in llie large^Xo. .Si.(I())ten teeth. Thedentary boiK>, 



' supi)orts twelve or thirteen tec tli, which are dire(!ted obliquely inwards 



at a slight angle. The si)lonian)oae siipi)orts tour and sometiaies live 



" teeth, which form a short series posterior to those of the dentary l»<>ne, 



' whose base ascends gently backwards. In two specimens from (Jr.tss 



Iiiver, N. Y.(Xo. 7()o8) the teeth are rather fewer in number, viz: I'rc- 



maxillaries, eleven; vomeropalatines, eleven; jjterygoids, four. 



The limbs are well developed, but short and weak, as in salamanders 

 generally. The two external lingers are subicpial in length, and siiorter 

 than the two middle ones, which are also subeipu'' There are no dis- 

 tinct palmar or su bdigital warts. The phalanges are, beginning on 

 the inner side, l-.'S-IJ-L'. The toes are all unequal. The innei' is the 

 shortest; then follow in order the fourth, the second, and the third. 

 There are no solar or subdigital tubercles. The phalanges number 

 l-L'-'J-L*. The limbs are of about enual length, and are ecpial to the 

 width of the head just in front of the brancliia'. Tressed to the side, 

 they are separated bv a distaiu!e equal to one length and a half of 

 either of tlKin. 



The skill is entirely s.nooth, and has no longitudinal later.d fold. 

 There are fourteen transverse folds — very rarely lifteen— which are not 

 visible on the belly nor on the median dorsal region. A fold crosses 

 the throat, connecting the branchial fissures; it is not very profound, 

 and be(;omes obscure in specimens which have not been well preserved. 

 I Wii-i.,iiirv:t. There are two branchial lissures only, there being none behind the pos 



terior branchial arch. The vent presents two short obtuse i)rocesses 



, „.,■ , inwards and backwards at the i)osterior i)art of its lateral borders. An- 



tes, \\ liicli ' ' 



■ ,. „; „ terior tc these there are three short processes, one on each side and oiu^ 



le inU'rioi ' ' 



,j (i,,,!,,.;,,. 'd the anterior angle, which are principally composed of fine papi»ilhe. 



h are sub- Uesidcs these, the entire walls are i)api)illose. These are especially 



., prominent at the breeding season, 



111 I'lli'tAvj 



