A treatise on zoology . Fio. 31. Diagram of the gills and their afferent blood system in A, Bddlostonw (Hoiaea stouii); B,Iaramyxuic ; and C, Miixiiie (after Dean). Ventral view, , common opening of six gill-sacsand oesophageal duct; , gill-sac; d, oesophageal duct; h, heart; o, external opening ofgill-sac; ph, pharynx; t, outline of rasping tongue; , tube leading to exterior; ,ventral aorta. ;i considerable extent in the adult as a vessel carrying blood fromthe intestine through the liver direct to the sinus venosus (Fig. 32). MYXINOIDEA 49 ?= H-^ g cS g5 P 5 -3 .S +2 ^ c = s 5, ?


A treatise on zoology . Fio. 31. Diagram of the gills and their afferent blood system in A, Bddlostonw (Hoiaea stouii); B,Iaramyxuic ; and C, Miixiiie (after Dean). Ventral view, , common opening of six gill-sacsand oesophageal duct; , gill-sac; d, oesophageal duct; h, heart; o, external opening ofgill-sac; ph, pharynx; t, outline of rasping tongue; , tube leading to exterior; ,ventral aorta. ;i considerable extent in the adult as a vessel carrying blood fromthe intestine through the liver direct to the sinus venosus (Fig. 32). MYXINOIDEA 49 ?= H-^ g cS g5 P 5 -3 .S +2 ^ c = s 5, ?-< 5^ ^ as „~= £ rt :3 *^ s ^ ^ rt sn 3 ^ 9 o£. MYXINOIDEA


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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology