TABLE OF CONTENTS 
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TTMTLOCUGLIOMG deta tA oe erect es attire re | otsratole, ofsten st ousy nto oten soy cxchonepeisyewe 7 
M@he NasaleCapsulesyor ther Urodelamy arr sjaetre - crsieisi) sie leieteielereciedetel hate 8 
Amb ly stoma pum Cla wane lye sesh chal ser sic) a ckenchs cieveleletevavelfench= 8 
Salamandragmacwlata see wicieisctere Attar sic)eie,sicusl sciclol shotisue ae easton 14 
TRTICONMETISCALUS eter eee eucrcls ciclere. «(cis nei sions @ siarsl ania) etaleh od seekerouerons 17 
DiSmICeylUs pe viTIGeSCENS asia vers <velalct= haucrclane «1 sels <poleiete leone 19 
Cryptobranchus alleghaniensis.............. Siohves ti AIR 21 
Spelerpesmbilimeatusmrrs saya sertercer ie 8 veils siesta 25 
Plethodonwenythronotust.- eerie - ltere ils eretolceleiral oes 27 
INGERITIG, INERT Ce yng dan cocnoemobieobe ne bon cioscon co bour 28 
Np, GNCENS. oben bdeacsdacqaneRsoocobboCoSUoohbooC 31 
The Nasal Capsule of the Gymnophiona .....................---- 35 
DGC oa doechoeSbonesbesGoabescoouumoouB Oo 35 
Comparison of the Nasal Capsules in the Urodela and Gymnophiona. 40 
MhesNasaliCapsulesron thevAMUrajy. sci c)-r-1-1tarjeretais ysis ore coker 49 
Bipamamenrican deer. mcwane ier tecrcie verre eta ae sence epee 49 
Bufo) americana)... . RAiave Ne aee ates RPO eR real oretescore 51 
Eley Lava C ETI Lily for secyelcl ae exces ororsis ain eee AS Sle eye clin te sven 54 
FRAN Ae VATIG ESCO epee ove epetcts oo ask chaps ceacper oi eect Pa oi omessie seers ones 55 
Comparison of the Nasal Capsules in the Anura................... 58 
Conclusions Based on this Study . Bears ste aay Sereree POO 
Phylogeny of the Nasal Goosen on nAcaphibia stats fast avave aes sohie Const 60 
Classification of the Amphibia; 44.42)... - 2 seo leet 63 
Amphibian, Am Cestrysa actos ust eee is aieie = vers eran ciotap ale iaeyarneneT 65 
Bibliopraphygaemr ye ye tee ie heirs pent ebeelt terete tele peeetats 68 
Bxplanation of Plates, ao .c0c1. i's ona anaes alanine eeerae 71 
