AORTIC LIGAMENT IN INDIAN FISHES. 



Text-fiorare 1. 



63 



Feudeutropius garua (nat. size). The dorsal aorta lias been opened from tlie 

 ventral side to show the disposition of the lio-ament. 



Vom., vomer ; lig.a.', the branches of the anterior portion of the lio-ament which 

 become attached to the vomer ; par., parasphenoid ; lig.a.", the two main 

 branches of the anterior portion of the ligament; Sas., basioccipital; lig.a. 

 the anterior portion of the ligament lying outside the dorsal aorta ; liq.'per!, 

 the place where the ligament perforates through the dorsal wall of the aorta • 

 ej^.a., efferent branchial vessels ; a/s., anterior fan-shaped structure; r.m.c'., 

 round masses of connective tissue or sub-vertebral masses ; i.v.o., sub-inter' 

 vertebral masses of connective tissue ; %., aortic ligament ; aor., aorta; ver. 

 vertebrae; p.f.s., posterior fan-shaped structure; hi/., hj-pural bone. 



