38 



ZOOLOGY 



so far as known, a tailed larva, except in the genus Jm^V/At of 

 the Mvl<julid(c—-A faniily of the simple forms, m which the tailed 



ctfr 



^* sti^ ^"^ "^f^ 



r'ecZ 



cclr ^^'^^cil.gr^ 



HI ^^^ff ^^^ 



ciL.oi^ 



Fir., V;'!''. — Dia;,n"LUi of the rnctani'.irithijsis of tlic free tailed larvainto lliu fixed A:;eidian. A, stage 

 uf free-swhiiiiiiug larva ; B, larva recently fixed; L\ oldei fiixcd stage, ailh. adhesive papiUse ; 

 afr. atrial cavity; ci\. (j,\ ciliated divertienlum, Ijccoiiiing ciliated funnel; end. cndostyle ; 

 /t(. heart ; »(.£(/. ganglion uf trunk ; n. <-/». nervo-ganglinn noto nntnclinrd ; nr. oral aperture ; 

 red. rectum; ncn^,. vcn. sensc-vcmcic ; .■^/"j. stigmata; .■<'ii/. ^t'llon ; /, tail. (From Korschclt 

 and Hcider, after Seeliger.) 



stagcis wanting and there is only an ubscniv undiKlorniai rudiment 

 to represent the notoclierd. 



