I 



THE iJATKACIIIA OF NORTH AMKKICA. 



235 



The Jittachineuts aiv similar to the last in the Dciulrobatida', in I'iU- 

 peiiipliix, and in IJracliyccplialns. In h'liffi/sOnnti nnilo tlio laterovrntral 

 lino is broad, orconiposod of several series of fibers and lamina^, and in 

 IJ. mroUncnse it is eoinposed of two sept.i. In P.seiulo]»lirvn(! (lie dor- 

 solateral septum, as well as tlie last mentioned, is wideiu'd ; IMirynis- 

 ens is similar, exeei>t that the dorsolateral is narr.)wer posteriorly, but, 

 rapidly wiilening, meets its mate on the nape, foiinin,i>a broad transverse 

 attachment. In Atdoptin hvris the inti',i;nment between tin; dorso- and 

 ventndateral septa is ivttaehed, forminj;' a broad lateral aillierent band. 

 In lihinoiihrjiniis dorsali.s this lateral attaidiment is carried so far as to 

 leave only narrow free dorsal and ventral regions, while it is further 

 peculiar in wantin<jr the eoracoid sei)tum, as in l)is(!o,i;iossus and Xeiio- 

 pus. lOpidalea, I>ufo, and LVlta[>hryue, in their numerous species, add 

 to the raniform structure the attachment of the whole dorsal integu- 

 ment. The following table exhibits the other attachments. 



IJi'lly liroailly tVi'L", very iiariDw liitL'nivi'iiti'iil attiieliiiiciit: Hafo liamdlilidi^, Utihc- 



luinUii. 

 IJclIy liroiiilly fri-c, broad latiTovciilral atljii-liiiiciit : />. (vnir'mnins, It iiliijiuoniin. i'0(j- 



iKiliis, cliilciisis^ ri)l II nihil iiKtx. riih/iirix, iiiirinix, nilliiiji.i, 

 Hi'lly liKiadly fret", post urioi' I'oiirtli or lifili altdoiiicii aKat'liud: <iriivili'i,ciimjiintili'< 



paiillii riiiiix. 

 Latcidvciitial attacliiiicnt very liroail, Icavinj; liiit narrow iVi'i' iiljdoiiiiiial spar'e: I!. 



iituifiriiK, iiiun'uHK, iiilrnnidiii-i, iiiDirtiiliix, iiiviiriiiK, dijitiirliiin, 

 Voiitral inti'^mnuiit atttatdu'd : J!, viircifir, iimiiliin-, viridix, l.tliiarlii (posU'i'ior Iialf 

 attaclii'd). 



A considerable variety is exhibited by the families of the Arcifera. 

 In the genera of Discoglossida' examined (Discoglossus and IJombiiui- 

 tor) the attachments are as in Itanida', except the absence of the eora- 

 coid septum, as in Xenopus. On the contrary, in the Seaphioi)odida', 

 the integument is more or less entirely adherent above ami below. 

 The greater luimber, including the typical tbrms of llylida', add to 

 the ranid arrangement a close areolar attachment of the abdominal 

 skill, while it is characteristic of many species of Cystignathidic to 

 possess one. or two transverse simple posterior abdominal septa. For 

 tile many variations and exceptions, see under the respective families. 



Of the Aglossa, Xenopus lacks the coratioid and inferior femoral 

 atlacliments; there is a «loublo or treble, but not wide, lateral adhesion 

 low down, which nniy be a combined dorsolateral and dorsoveutral, or 

 broad dorsoveutral only. In IMi)a all the attachments are wanting, ex- 

 cejit two closely api>roxnnated lateral lines and a sui)erior posterior 

 aud anterior inferior femoral. 



VISCERA. 



With regard to the dilferenccs in the arrangement and structure of 

 the internal organs a great ileal remains to l»e oliserved. Ilenle (Ana- 

 tomic des Kehlkopfes) i>oiiits out some in(u)nsiderable dilferences in 



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U\ 



m 



