PLATE XXXIII. 



Fig. 4. Amphithoe humeralis Stimpson. 



Reference Letters. 



ant'. — Antennules. Ip. — '^Limbe posterieur. " 



ant" . — Antennae . Ibr. — Lab rum . 



as. — Anal style. m. — Mandible. 



bucc. — Mouth parts. mp. — Maxilliped. 



ceph. — Under surface of head. mx\ inx" . — Maxillae. 



emb. — Embryo. /'> /^ etc. — Pereiopods. 



en. — Endopodite. //. — Abdomen. 



ex. — Exopodite. pl^,pr^^. — Pleural lamellae. 



gn', gn" . — Gnathopods. pip. — Pleopod. 



/. — Labium. up. — Uropod. 



la. — " Limb.e anterieur. " iir. — Urosome. 



/. — Telson. 



/, //, ///, IV. — Mouth parts of embryo (see text). 



r290) 



