OQ1 



1901.] LABYITX OP CERTAIN WHALES. 



Z^^ZJ^A^^^A^^ .^e. i. U.e.an„™ so 



well known for Cetacea and several other Mami.ak. ^ 



The epieloltis is 3 inches long m this young ««9™' • .™ 



poste o-doLl surface is grooved, the s,des °f 'l^/^f ™°:«^''S 



?bickand .wnded near the apex^ Wt ^T gfoov Ts ne^ tS 



pass into the ^^^"-''f S "/'^JX' lipsbefng closely pressed 

 end. narrow and almost slit-like, tne ups "eiu| „,.„„„„ ;, « 



together in a state of rest. Along ''\\^''\t^^ f^'Z el 

 ridge, which commences about one inch from the tip ot the epi 



&^ =aVge^r&^e S^) E sSd^t^e 



&r^^:^f2<Sst:^%^rjhi,r^ 



along It appears as it, with tlie a'siensiou i ^„yjj. 



arytenoid todies would not reach the »°''; '• (™f, -„;us,le 

 fig. 21.) But as Carte and Macahster show, tne «">"'"« ;?'*';';'?! 

 ai-e so arranged as to puU the whole larynx upwards during the 

 process ofXiration. The two bodies are united posteriorly, and 

 [hrpoint iTs^omewhat recnrved, but their a-t-™' f^-l.-^ 

 are Le and enclose a deep grooye-a groove t at be™m'»g 

 drener leads downwards into the laryngeal eljambei, »hich 's 

 eSd thigh a large oval aperture the sides o£^wh^^« 

 supported by the posterior processes of the arytenoid caitila^es. 



^^TtSrttide*anfu™w,on the other hand, leads downwards 

 int7fte^HuWaryngeal pojch." This is a long tubular sac, ending 

 MSd^beMnd, pi^vlled/with ^^^^^X^'o:^^^^ 

 ::r:lZr S'P,tf on \ttnti.al aspect of the 

 ?rr^nx between the two^ol■nna of the cricoid cartilage. (Plate 



^?te vent'rri^wall of the pouch is formed by muscle, its dorsal 

 wJl by the arytenoids, between which the pouch commimicates, 



''^^•^.^C^li^ !rJsSiii-& diverticulum of 

 Jtriv£of|eW^^^^^ 



E~r5=^eeX^:s»^S 



mete it is homologous with the sacs present m seveial 



~SaXer r-tS^et .^lo^^Sld; of the 

 mifcous membrane of tlTe floor of the pharynx just - ^on ° 

 ir^'^'^.a^Sm^h^Sei'^rmrheri SS 

 ip ^ny'uSnrrrn the subject ; but I do not think I should have 



