568 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



EXPLANATION OF PLATES. 



Reference Letters. 



A^ = First antenna. 



A. x a. = Articular cavity of first 

 antenna. 



A., = Second antenna. 



A. 2 a. = Articular cavity of second 

 antenna. 



ant. a. = Antennary or lateral 

 artery. 



ant. p. = Anterior fold of oesopha- 

 gus. 



asc. a. = Ascending arterioles. 

 B. 



bl. = Abdominal bladder or 



nephrosac. 

 bl. c. = Ducts between anterior 



and posterior vesicular mass. 

 6. m. = Basement membrane. 

 bp. = Basipodite. 



C. 

 caec. = Abdominal caecum. 

 car. = Cardiac foregut. 

 c. hy. = Corneal hypodermis. 

 cm. = Oesophageal commissures. 

 cm. ab. = Abdominal commissures. 



c. o. = Cardiac ossicle 

 cor. = Cornea. 



cp. = Carpopodite. 

 cp. v. = Cardiopyloric valve. 

 cu. = Cuticle. 

 ex. = Coxopodite. 

 D. 



d. c. = Dorsal coil of vas 

 deferens. 



d. liv. = Ducts of liver. 



dp. = Dactylopodite. 



d. re. = Distal retinular cells. 



d. st. a. = Descending sternal 

 artery. 

 E. 



end. = Endopodite. 



eg. I. = Epigastric lobe. 



ep. = Epimera. 



epl. = Endopleurite. 



e.s. = Cells lining the endsac. 



est. = Endosternite. 



ex. = Exopodite. 



ex. ap. = External excretory open- 

 ing. 



ex. op. = Aperture of otocyst. 



/. c. = Fat cells. 

 /?. = Flagellum. 

 fl. m. = Flexor muscles. 

 fm. c. = Ferment cells. 

 G. 



<7-2 — g , - 8 = Abdominal ganglia. 



g. g. = Green gland. 



gl. = Rosette gland. 



g. t. = Germinal tubule of testis. 



H. 

 hep. a. = Hepatic artery. 

 h. gr. = Hind gut. 

 hg. ep. = Epithelium of rectum. 

 hg. m. = Muscles of rectum. 

 Jit. = Heart. 



I. 



inf. m. a. — Infra muscular 

 branch of segmental artery. 

 int.= Intestine. 

 ip. = Ischiopodite. 

 i. v.= Inferior valve. 



lb. = Cells lining labyrinth. 



I. liv. = Left lobe of digestive 



gland. 

 I. ov. = Blood vessels to left ovary. 

 I. p. = Lateral fold of oesophagus. 

 It. = Lateral teeth. 

 k=Lumen of oesophagus. 



M. 

 md. = Mandible. 

 md. a. = Artery to mandible. 

 m. g. — Mid-gut. 

 mg. caec. = Paired mid-gut (pyloric 



caeca). 

 mp. = Meropodite. 

 mt. = Median tooth. 

 m.v.= Median valve, 

 m. v. I. = Median ventral lobe. 

 mx. a. = Articular cavity of 



maxillae. 

 mx.a.', a.", a."' = Arteries to 



maxillae. 

 mxp. = Maxilhpede. 

 mxp.a.', a.", a."' = Arteries to 



maxilhpedes. 

 mxp.a. = Articular cavity of 



maxilhpedes. 



