42 



Explanation of Plates. 



Reference Letters. 



a. ant. = interior aorta. 



ahd.g. ^ = fourth pair of ab- 

 dominal gauglia. 



ad.i. = fat body. 



a. post. = pootorior aorta. 



aff'.hr.v. = afferent branchial 

 vessel. 



aff.c.v. = afferent vessel of 

 coxal plate. 



aff.epim.v. = afferent vessel of 

 epimeral plate. 



aff.v. = afferent vessel of leg. 



aff.v'. afferent vessel of an- 

 tenna. 



al.c. = alae cordis. 



al.can. = alimentary canal. 



am.c. = amoeboid corpuscle of 

 blood. 



an. =anvis. 



ant. 1 = first antenna. 



ant. 2 = second antenna. 



anf.r. = antennary cone. 



art. 10 = tenth joint of second 

 antenna. 



br. = brain. 



calc. = calceohis. 



c.ep. = columnar epithelium of 

 anterior diverticulum. 



con.t. — convoluted tube of ex- 

 cretory organ. 



c.p. = enlarged coxal plate. 



cut>. = basement cuticle of 

 stomach. 



cwttt. = cuticle lining anterior 

 diverticulum. 



div.a. = anterior diverticulum 



of mid-gut. 

 fJiv.p. = posterior diverticulum 



of mid-gut. 

 eff.br.v. = efferent branchial 



vessel. 

 eff.c.v. = efferent vessel of 



coxal plate. 

 eff.v. = efferent vessel of leg. 

 eff.vi. = efferent vessel of an- 

 tenna. 

 eff.epim.v. = efferent vessel of 



epimeral plate. 

 epim.p.l = epimeral plate of 



thorax. 

 epim.p.2 = epimeral plate of 



abdomen. 

 t.s. = end-sac of excretory 



organ. 

 exc.or. — excretory organ. 

 far.art. = facial artery. 

 fl.spr. = secondary flagellum 



of first antenna. 

 g.d. = reproductive duct. 

 gl. = unicellular glands. 

 gnath.l = first gnathopod. 

 gnath.2 = second gnathopod. 

 gon. = reproductive organ. 

 h.p. = hepato-pancreatic 



tubes. 

 fit. = heart. 

 long.m. = exterior muscle of 



body. 



long. ml. 

 body. 



= flexor muscle of 



