Smitr.sonian Report, 1904.— Gil 



FODIATOR ACUTUS, DaCTYLOPTERUS VOLITANS, AND AlR BLADDERS. 



1, Foilidlor acntuft: 2, Darti/lniitfrnx rolitans, in youiifresl post-cuphalaciintlms stage, masnitied 

 twice: S. air bladder of 'Dnrti/loptrnin, seen from below, with the lateral intrinsic muscles: 

 4. air bladder I rJKht lotie) with insertion of extrinsic nniscle and pyramidal appendage 

 held by hook; f>. air bladder (right lobei interior witli the incomplete diaphragm; 6, Trigla. 

 cuciiliix: air bladder, fnjm below, to contrast with that of Dacti/liipUrus. 



