M. 



idi', ii;nl of 



'»), alrciul.v 

 oftlinliit- 



I bi' iipt to 

 the hiowii 

 gnosis, and 

 ■s-!, tin' o'»- 



II he iicccs- 



' very si Kir 



iicctii.^' till' 

 >t' the lifinl 

 iiu'-iialftlir 

 tie loiij^fv, 

 ;(> iiidicatcil 

 Llio antcrini- 

 /.•.■thii aii,ult' 

 lUrr than is 

 iiitcroi'iilar 

 pccii's itcii- 

 illary srri<'s 



> VOIIlClilK'S 



slit, luariy 

 •itrcmity. I 

 c, r. oilculir- 

 ho. sti'()iij;('st 

 I witli lar;;(^ 

 ) in coiitiict. 

 l»(Ui(liii,n' tlic 

 ;. Here tli»>- 

 H'i)aratiMl by 



smaller and 

 unlike tripi'. 

 CM the orbits 



I'scr than in 

 ' head. The 

 'iblc, iiapilla' 

 1 tiii^ archrd 



species, but 

 ■(> not round, 

 ther. 

 inninjjf on the 



upper arm is 



T 



Till': llATliAClllA OF NOliTll AMKKlCA. 45 



well developed, iiiul terminates Just below the elbow. The toes eonie 

 in the order of length as follows, beginnin";- witli the short inner, 1, 5, 

 !',;>, 4; and the phalanjies, in the same order, are 2, 2, 3,3, 2. The 

 three external are ribbed from the tips ; the notch between the third 

 and fourth reachinj,' the end of the lirst phalange, but between the 

 fourth and filth extending from tip to tip, with a very slight notch 

 (easily enlarged by tearing) ; the legs are about as long as in C. allajhc- 

 nicn>iis. \\'hen they are pressed to the side they are separated by ii 

 distance equal to one and a (luarter times the length of the hinder leg. 

 This measurenuMit must betaken with some allowance, as the S[)ecimen 

 has been coiled in strong alcohol, and its true form is not easily restored. 

 It is impossible to distinguish the true lateral folds. An estimate 

 nuikes them equal those of the other si)eeies, tburteen. The tail has 

 the usual form. Its superior outline rises from the base, and is convex, 

 and consists partly of a thin dermal border. Tlu^ extremity is thin, as 

 is also the distal fourth of the inferior edge. 



Mciiniircmoils, 



M. 



Ti>t;il Icii^rtli (I. Ill) 



Lcnj^tli (ot'iiilol' vent 'Jltf) 



Lciiiilli to gri)in •iUt 



l.cii;,'lliti) axilla 11)0 



Li'iij;tli to line of oaiitlnis (iri.s 015 



l.i'iij^th of anterior Ic^i; OIW 



Lciij^tli of anterior foot 015 



L'.'iij^tli of jioHterior h'j; 05:i 



Lcii^rtli of jtosterior foot {))>\'i 



Witltli l)et\vi'i'ii external nares Ol'i 



Width lie t ween orbits Oi,') 



Wi.Uli of liead or)l 



Kciitliof tail at middle 042 



'I'lie color of this si»ecimen is a rich chocolate brown; the inferior sur 

 faces rather paler tlian the superior. No spots. 



(j'aliilii^Mi' iiiiTiiliiT. Nil. spcciiri. Li)cality. 



Knoxville, Tcnii . . 



1 



Donor. 



I'lofcNsiir Milclull. 



AMlJLYiSrOMIDJC. 



This family is of particular interest among the Urodela, us furnishing 

 «'onnecting forms between the ordinary types of the order and those 

 larger species which we suppose t(> be more characteristic of former 

 periods of the earth's history. It also furnishes us with transitional 

 coiutitions of characters which have been regarded as indicating very 

 diverse origin and nature. The species are mostly of large size, and 

 are probably confined to Xorth America; perhaps a species exists iu 

 Farther India. 



