A treatise on zoology . Fia. 4S3. Dentition of the Wolf-lisli, AnarrhU^as Ivpvs, L. (After OiiiitluT.) Lpper teetli on theright, lower teeth on the lelt. also the scales. As a rule, there are no s^iines, except sometimes in thehinder regions of the dorsal. The gill-membranes fused to the Fi(i. Zoarces viviparus, T;. (From Chuis and Seiljjwiclc.) A, anus ; V, urinogenital jugular pelvic fins are seen below the heart. Zoarces and others are viviparous. Some deep-sea forms lose their eyes,as Ty}ihlosus, Aphyonus ; also the cave-forms Stygicola and Lucifvcja.

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