770 



ZOOLOGY 



SECT 



supported by curved plates of cartillage forming a sort of orbit 

 connected with the cranial cartilage. The significance of th< 



aorl 



FIG. 605. Sepia cultrata, heart and main blood-vessels from the posterior aspect, ant. no 

 awl. aorta ; aorl'. aboral aorta ; app. appendage of right branchial heart ; eff. br. r. righ 

 efferent branchial vessel ; ink. a. artery to ink-sac ; ink. r. vein from ink-sac ; /. off. br. r. lef 

 afferent branchial vessel ; 1. aur. left auricle ; or. r. deep ovarian vein ; or. r/. superficia 

 ovarian vein ; pall. r. pallial vein ; r. abd. v. right abdominal vein ; r. aff. Ir. v. righ 

 afferent branchial vein; r. cten. right ctenidium ; r. br. ht. right branchial heart; r. ca> 

 vena cava : ven. app. venous appendages ; rent, ventricle. 



"br.n. 



FIG. 666. Sepia cultrata, cephalic gang- 

 lia from the anterior aspect, ao. aorta ; 

 luc. buccal ganglion ; cer. buc. con. cere- 

 bro-buccal connective ; cer. g. cerebral 

 ganglion ; opt. #. optic ganglion (removed 

 on the left side) ; opt. st. optic stalk ; 

 pall. n. pallial nerve ; pi. rr. pleural gang- 

 lion ; rise. n. visceral nerves. 



TSCSC.7L 



FIG. 66T. Sepia cultrata, anterior view 

 of pedal and pleuro-visceral ganglia afte 

 removal of the cerebral and optic. l>r. n 

 brachial nerves ; conn, connectives bo 

 twecn the cerebral and the pedal am 

 pleuro-visceral ganglia (cut across); ini. /> 

 nerve to funnel ; pall. n. pallial nerves 

 rise. n. visceral nerves. 



various parts of the eye will not be fully understood till the struc 

 ture of that of the Vertebrata has been studied. A transparen 



