97 



F. = Funnel. 



F x = Oviducal artery. 



F. A. = Infundibular artery. 



F. D. = Depressor muscle of funnel. 



F. V. = Infundibular veins. 



F. W. = Folded wall, olf. pit. 

 gr. = Gill 



gr. = Groove for spermatophores. 

 g'. g". = Ganglia on Visceral nerve. 

 gr x = Groove betw. web and lip. 



0. = Genital gland. 



G. A. = Genital aorta. 

 G. g. = Gastric ganglion. 

 gldr. p. = Glandular region 

 G. V. = Genital vein. 



gld 1 = Indifferent cells. 



h. — Head. 



h. ap. — Hepato-pancreatic aperture. 



Jt. c. = Horny egg-case. 



H. E. = Epithelial covering of hepatic 



gland. 

 Hep. A. = Hepatic artery. 

 U l = Nerves to head. 

 H. = Heart, 

 H. V. = Hepatic vein. 

 H. D. = Common Hepatic duct. 

 i. d. = Ink duct. 

 int. = Intestine. 

 i. s. = Ink sac. 

 /. br. = Interbrachial nerves. 



1. C. L. = Internal fibrous layer. 

 /. p. = Ink duct papilla. 



Irid. = Iridocysts in dermis. 



/. S. A. = Artery to Ink sac. 



/. S. Gr. = Ink sac groove. 



/. S. N. — Nerve to Ink sac. 



/. S. V. = Vein to Ink sac. 



7 «/. oph. N. = Infer. Ophth. nerve. 



Jul. A. = Intestinal artery. 



Int. ap. = First part of intestine. 



Int. Muse. = Inter, muse, of eye. 



Int. V. = Intestinal veins. 



1. E. — Iridescent envelope. 



i. ep. = Inter, epith. of oesoph. 



I. gld. = Ink gland. 



J l and J. = Ventral and dorsal jaws. 



K. C. = Kolliker's canal. 



I. = Lip. 



l l = External lip. 



I. d. c. = Left dorsal cirrus. 



I. b. s. = Larger blood sinus. 



1. f. r. = Left funnel ridge. 



I. h. d. and r. h. d. = Hepatic ducts. 



lid. = Eye lid. 



/. in. (jr. — Left mantle groove. 



I. od. ap. int. — Int. apert. of 1. oviduct. 



L. = Lens. 



L x = Branchial leaflets. 



Luc — Apertures in wall betw. «S',, T'., 



and S a V ... 

 Liv. = Liver. 



L. aer. = Accessory "ill leaflets. 

 L. Aa ; It. An. = L. and R. auricles. 

 L. Bl. A. = Left Branchial artery. 

 L. F. D. — Left Funnel depressor. 

 L. F. Pr. = Left Funnel protractor. 

 L. M. = Lateral muscle. 

 L. Pall. A. = Left Pallial artery. 

 L. V. C. = Lateral Vena Cava. 

 Lim. C. = Limiting cell. 

 Lini. N. = Nucleus of ditto. 

 m. = Mouth. 

 mi, in./., in.p., m.p. ex. = muscular 



sheets. 

 m. d. = Mantle closed (expiration). 

 m. op. = Mantle open (inspiration). 

 ■m. s. = Muscular septum. 

 m. s. a. = Attachment of septum. 

 J7, = Mantle. 

 M. C. = Mantle cavity. 

 M. L. = Limiting membrane. 

 il/,.1/. = Muscular mantle. 

 31. V. = Mantle Veins. 

 M. W. — Oesophagus wall. 

 M. ep. = Inner Mantle epithelium. 

 Matr. = Cartilaginous matrix. 

 Mem. = Membranous sac. 

 Mes. = Mesentery. 

 Mus. = Muscular part of arm. 

 N x — Needham's pouch. 

 N. — Arterial network infolds « if gill 



filament. 

 X. A. — Nuchal artery. 

 A'. (J ire. = Circular Brachial nerve. 

 Xiteh. M. = Nuchal muscle. 

 Od. = Oviduct, 



od. ap. = Aperture of oviduct. 

 od. gl. = Oviducal gland. 

 oes. = Oesophagus. 

 Oes. y. = Sub-oesophageal ganglion. 

 o. g. = Oval ganglion. 

 Olf. cell. = Olfactory cell. 

 olf. N. = Olfactory nerve. 

 olf. P. = Olfactory pit. 

 Opt. G. = Optic ganglion. 

 Opt. N. = Optic nerve. 

 Opt. N. /. = Fibres from optic nerve. 

 opt. JVj = Nerves to retina. 

 ov. = Ova. 



ov. w. = Wall of ovary. 

 O.A. = Optic artery. 

 Oes. A. = Oesophageal artery. 

 or. = Pyloric aperture. 

 orb. C. — Orbital cartilage. 



