APLYSIA. 



261 



haem. = Haemocoele. 



hep. int. a. = Hepato -intestinal 

 artery. 



herm. gl. = Hermaphrodite gland. 



int. = Intestine. 



int. sem. gr. = Internal seminal 

 groove. 



I. bcL = Left bile duct. 



I. m. o. = Longitudinal muscles of 

 odontophore. 



I. ped. in. = Longitudinal muscle 

 band of foot. 



I. pi. vise. conn. = Left pleuro- 

 visceral connective. 



1. sal. gl. = Left salivary gland. 



1. sal. oes. n. = Nerve to left salivary 

 gland and oesophagus (F4). 



1. stom. v. = Left valve of stomach. 



la. herm. d. = Large hermaphrodite 

 duct. 



lat. t. 1 = First lateral tooth of 

 radula. 



lat. t. 2 = Second lateral tooth of 

 radula. 



lit. herm. d. = Little hermaphrodite 

 duct. 



liv. = Liver. 



Ip. = Loop of little hermaphrodite 

 duct. 



m. = Mouth. 

 mand. = Mandible. 

 mant. = Mantle. 



mant. f. = Mantle fold enveloping 

 shell. 



mant. n. = Mantle nerve (E4). 



mant. r. = Mantle roof. 



mant. sin. = Sinus from mantle to 

 haemocoele. 



muc. gl. = Mucous gland. 



muc. gl\ . = Small loop of mucous 

 gland. 



ne. a. = Neural artery, 

 o. in. = Muscles of odontophore. 

 od. = Oviducal portion of large her- 

 maphrodite duct. 



oes. = Oesophagus. 

 op. gl. = Opaline gland. 



op. gl. a. = Artery to opaline gland. 



opt. a. = Optic artery. 



opt. n. = Optic Nerve (A4). 



ot. = Otocyst. 



p. giz. = Posterior portion of gizzard 

 (second triturating stomach). 



p. gl. = Purple gland. 



p. gl. n. = Nerve to purple gland. 



pall. cav. = Pallial cavity. 



par. g. = Parietal ganglion. 



para. = Parapodium. 



para. a. = Parapodial artery. 



para. b. = Cut base of parapodium. 



para. n. 1 = Large parapodial nerve 

 (04) 



para. n. 2 = Small parapodial nerve 

 (06). 



para. ped. comm. = Parapedal com- 

 missure. 



para. sin. = Parapodial sinus. 



pc. = Pericardium. 



pc. n. = Pericardial nerve (D3). 



ped. a. = Pedal artery. 



ped. comm. = Pedal commissure. 



ped. g. = Pedal ganglion. 



ped. gl. = Pedal glands. 



ped. lac. = Pedal lacunae. 



ped. n. 2 = Middle pedal nerve (C7). 



ped. n. 3 = Posterior pedal nerve (C8). 



peribuc. a. = Peribuccal artery. 



ph. can. = Pharyngeal canal. 



ph. can. n. = Nerve to pharyngeal 

 canal. 



ph. cr. = Pharyngeal crest. 



pi. g. = Pleural ganglion. 



pi. ped. conn. =Pleuro-pedal connec- 

 tive. 



pn. = Penis. 



pn. a. = Penial artery. 



pn. s. = Penis sheath. 



post. ped. gl. = Posterior pedal gland. 



pz. = Brush cell (Pinselzelle). 



r. bd. = Right bile duct. 



r. oes. n. = Right oesophageal nerve. 



