^"^ ZOOLOGY. 



OCTOPODS. 



Ootopu, BairdH V. Octopm leMns V. 



p««to™,„ V. StauroteutUs „jrteMis V. 



"'"*'"'■' ^- Alloposws mollis V. 



VEETEBRATES. 



NOjnSNCLATURE OP LIMB SEOMENTS. 



In connection with an article on the lohtbyosaurian Sauranouou (snb 

 sequent y renan.ed Baptanorton),. Professor Mar.sh l,a« piCseT. net 

 B0.nenclature for "the corresponding segn,ents alike ^ ItlUic" 

 ana posterior hmbs of the air breatliing vertibrates." Becallm" thai 

 thetcruis "phalanges" and " metapodials" had already been^pM 

 and obtained general currency for the distal segments ho pronosed to 

 complete the nomenclature as follows : s-^euts, ne proposed to 



Propopodial bones H™r:; ^^''- 



THE SEMICIECULAR CANALS OF VERTEBRATES. 



Dr. Francis Dercum h,as investigated the morphology of the semi 

 c rcular canals n, the vertebrates.t He recalls the feet that the s rn tu e 

 of tl^e mucous canals and of the sen,icirc„lar canals is verv si „ Hr ,s 

 ^t^^^lT':^''^'^'^'^'^- "-"ingthisana'gy a: 



oX ::xf a':i vzx x-rsTrur-r :- :i: 



tT^r ! ?, !? ^^ ^ ^^°^^^^ apparatus for the ,.erception of vibr-i 



:^^:r^^:tr---r:c^^^^ 



elTb ""^ ''™T ^"^ ease with the lateral can Is d he ea 

 tl,r r„ ' ^ '^ "'*"" '" ^«"«»«te does not take place until 



a^e^^rntaLtfLrthattr ''^'''' 'T compleliorofts' 



