A treatise on zoology . left-side view of the anterior end, from whicli the skin has beenremoved. B, ventral view of the head, , dotted line indicating position of auditory capsule ;, cartilage ring of nasal tube; in, mouth ; , mucus sac ; i) 48 MYXINOIDEA The anterior region of the snbintestinal vein seems to persist to nup. Fio. 30. Median longitudinal section of the anterior region of BdeUostoma Forsterii, M. (Modifiedfrom Parlcer.) , buccal cavity ; , basal plate of tongue ; br, brain ; , cartilage ring ofnasal tube ; et, median horny tooth ; /./, fatty tissue ;
A treatise on zoology . left-side view of the anterior end, from whicli the skin has beenremoved. B, ventral view of the head, , dotted line indicating position of auditory capsule ;, cartilage ring of nasal tube; in, mouth ; , mucus sac ; i) 48 MYXINOIDEA The anterior region of the snbintestinal vein seems to persist to nup. Fio. 30. Median longitudinal section of the anterior region of BdeUostoma Forsterii, M. (Modifiedfrom Parlcer.) , buccal cavity ; , basal plate of tongue ; br, brain ; , cartilage ring ofnasal tube ; et, median horny tooth ; /./, fatty tissue ; , hypophysial plate ; , hypophysialsac opening behind into pharynx ; m, mouth ; nac, nasal tube ; nap, median nostril; , nasalcapsule, with cavity divided by median septum ; ni, notochord ; oe, pharynx ; , parachordalplate ; pt, rasping organ with horny teeth; $n,, subnasal cartilage ; t, cartilage of tongue ;i; velum. The cartilages are dotted. A. B
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
