:7o 



ZOOLOGY 



supported by curved plates of cartillage forming a sort of orbit, 

 connected with the cranial cartilage. The significance of the 



i-cvg;bv 



Ot/.l/ 



i. r.05.— Sepia cultrata^ heart and main blood-vessels from the pustenor aspect, ant. ap, 

 aori. aorta; aort'. aboral aorta; app. appendage of right branchial heart; e^. br. v. light 

 efferent branchial vessel ; ink. a. artery to ink-sac ; ink. v. vein from ink-sac ; I. off', br, v. left 

 afferent branchial vessel; I. aur. left auricle; or. v. deep ovarian vein ; ov. v'. superficial 

 ovarian vein; 'pall. v. pallial vein; 7'. ahi7. v. right abdominal vein; r. aff. hr. r. right 

 afferent branchial vein ; r. cten. right ctenidium ; r. br. lit. right branchial heart; v. car. 

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



hr.n. 



h%L.c 

 cerbtcccon 



Fin. 6fiC.— Sepia cultrata, cephalic gang- 

 lia from the anterior aspect, txo. aorta ; 

 Imc, buccal ganglion ; cer, bite, con. cere- 

 bro-buccal connective ; cer. g. cerebral 

 ganglion ; o'pt. r/. optic ganglion (removed 

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

 pall. n. pallial nerve ; jjZ. ri. pleural gang- 

 lion ; vise. n. visceral nerves. 



Fin. nor.— Sepia cultrata, anterior view 

 of pedal and pleuro- visceral ganglia after 

 removal of the cerebral and optic, hr. n. 

 brachial nerves ; conn, connectives be- 

 tween the cerebral and the pedal and 

 pi euro- visceral ganglia (cut across); inf. n. 

 nerve to funnel ; pall. n. pallial nerves ; 

 vise. 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 transparent 



