if 



60 



iM'LMrriN :!i, r.N'ri'Kh statks naiionai- mi'skiim. 



ii 



\v;is inclosed. At (liis Ii'iik- it is alioiit liaH';ili iiicli in It'lifjtli, iilld con- 

 sists siMi|)i,v (»r Ih'ihI, ImxI.v ;ni<l liiil, the liilli'i willi a well (Icvrlopcd lin, 

 rxtcndinji Ironi the liciid and anus to tin cxticniit.v of tlicbod.v. R«'s 

 |)irati(»n is pcrroiincd l»y means (»f tliicc {>ills projecting: (Voni ca(!li sido 

 of (lie neck, of very siniple construction, liowcNcr, and willi Init t'vw 

 Inanclies. 'I'lie alis<'iice of limits is compensated It.v tlie existence of ., 

 ciiilt shaped appenda^^c on each side of (lie head, proceedin;: froMi tlic 

 an.nle of the month, and representing the eini (dtserved in some ixliilf 

 salamanders. I!.v means of lliese appendafjes flie voinif,' salamanders 

 are enalded to anchor tliemsei\('s securely to (dtjects in the wafer. In 

 the coarse of a few days a tnltercle is seen to form on «>acli side, just 

 hehind tlit^Iicad and niidei' the i;ills. wliieli eloiinafes, and tinally ftuivs 

 at each end. lirsl into two. tiien three, and at last into four brandies, 

 tlins exliil»itin<,' tlu' anterior extiemilies. with t lie tour linijers, which 

 lattei', in the larva, are V(>ry h)n<::. I'.efore the foi-e Ipj^s I>ec<»me (M)ni- 

 plelely foniied tiiose heliind sjtront ont in a similar manner, witli first 

 three, then four, and finally live toes. During' this time the yiils iiave 

 increased in (he nnmher of brandies, and tinally exhibit a i)oaiitif'iiI 

 arboreseeiil aitpearance. in wliidi the circulation (»l the blood can i»e 

 distinctly seen by means of a simjile lens. (See plate Hi.) 



Pi 



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