STUDIES ON ASPLANCHNIA EBBESBORNII. 



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REFERENCE 



a., anterior, 



b.c., body cavity, 



bl., bladder, 



br., brain, 



l/u.c., buccal cavity, 



b.w., body wall, 



c., cilia, 



c.o., copulating organ, 



cp., corpuscle, 



(/., dorsal, 



d.g., digestive glands, 



eel., ectoderm, 



/lit,, entoderm, 



//., foot, 



i.e.sh., inner egg shell membrane, 



/., left, 



m., muscle, 



m.e., male embryo, 



in. eg., male egg, 



mo., mouth, 



oe., oesophagus, 



LETTERS. 



o.e.sh., outer egg shell membrane, 



oi'., ovary, 



ord., oviduct, 



p., posterior, 



p.b., polar body or bodies, 



ph., pharynx, 



phw., pharyngeal wall, 



pr., proctodaeum, 



r., right, 



r.eg., resting egg, 



r.o., reproductive organs, 



st., stomach, 



sto., stomodaeum, 



ts., testis, 



11., uterus, 



ur.s., urino-genital sinus, 



i'., ventral, 



r.m., vitelline membrane, 



i'/., vitellarium, 



y., yolk. 



