SEA-FISHERIES LABORATORY. 487 



ex. fl. (Fig. 30). — Extensor muscle of the flagellum. 



ex. prot. — Extensor muscle of the protopodite. 



ex. py. — Exopyloric ossicle. 



ext. D. — Tendon of the extensor muscle of the dactylopodite. 



ext. ex. — Extensor muscle of the exopodite. 



ext. P. — Tendon of the extensor muscle of the propodite. 



ex. tel. — Extensor muscle of the telson. 



f m i — 6. — Flexor muscles of the abdominal somites 1 to 6. 



/. B. — Tendon of the flexor muscle of the basi-ischium. 



/. c. — Fat cell of the digestive gland. 



/. C. — Tendon of the flexor muscle of the coxopodite. 



/. C . — Tendon of the flexor muscle of the carpopodite. 



/. D. — Tendon of the flexor muscle of the dactylopodite. 



flab. — Flabellum (epipodite). 



flag. — Flagellum. 



fl. m. — Muscles from the top of the " gland " to the carapace. 



/. m. 1. — Flabellum of the first maxillipede. 



/. m. 2. — Flabellum of the second maxillipede. 



/. m. 3. — Flabellum of the third maxillipede. 



/. ra. c. — Ferment cell of the digestive gland. 



/. o. — External female genital opening. 



/. p. — Fracture plane. 



/. P. — Tendon of the flexor muscle of the propodite. 



/. prot. — Flexor muscle of the protopodite. 



/. tel. — Flexor muscle of the telson. 



/. v. — Ferment vesicle. 



g. 1. — First gill. Podobranch of the second thoracic somite. 



g. 2. — Second gill. Arthrobranch of the second thoracic somite. 



g. 3. — Third gill. Podobranch of the third thoracic somite. 



g. 4. — Fourth gill. Anterior arthrobranch of the third thoracic somite. 



g. 5. — Fifth gill. Posterior arthrobranch of the third thoracic somite. 



g. 6. — Sixth gill. Anterior arthrobranch of the fourth thoracic somite. 



g. 7. — Seventh gill. Posterior arthrobranch of fourth thoracic somite 



g. 8. — Eighth gill. Pleurobranch of the fifth thoracic somite. 



g. 9. — Ninth gill. Pleurobranch of the sixth thoracic somite. 



g. a. — Anterior gastric muscle. 



g. f. — Fat globules. 



g. lb. — Paragastric lobe of the bladder. 



g. p. e. — External posterior gastric muscle. 



g. p. i. — Internal posterior gastric muscle. 



h. — Seta of the endopodite of the pleopod of the female. 



h. art. — Hepatic artery. 



h. a. — Hind gut. 



h. I. — Hepatic lobe of the bladder. 



1. — Ischiopodite. 



ia. art. — Inferior abdominal artery. 



*. a. /. — Inter ampullary fold. 



i. a. md. — Internal adductor muscle of the mandible. 



i. b. md. — Internal abductor muscle of the mandible. 



i. b. 8. — Inter-branchial septum. 



i. caec. — Hind-gut caecum. 



i. e. m. — Inner flexor muscle of the first maxilla. 



i. ex. — Inner flexor muscle of the scaphognathite (». ex. s., Figs. 27, 31). 



i. /. — Inner extensor muscle of scaphognathite. 



»'. /. w. — Inner extensor muscle of first maxilla. 



