A treatise on zoology . Fig. 37-2. Section of Miaanterums electrictis, Gm., showing the electric orj,an, A. B, vascular layer[<:, adipose tissue ; G, muscles. (From Owen, Anatomy ofVertehrutes, by permission.). Fig. 373. Plecostomus Commersonii, Val. A, piece of lepidotnch, enlarged. B, several scales, fromwhich the skin has been removed on the left. C, small piece ot the surface of a scale, muchenlar-ed D section through a developing denticle of Hypostoma (D, after Hertwig). as,smooth anterior region; d, denticle; , dentine cap; e«, enamel cap ; c], epidermis; ,lateral-line canal; --
A treatise on zoology . Fig. 37-2. Section of Miaanterums electrictis, Gm., showing the electric orj,an, A. B, vascular layer[<:, adipose tissue ; G, muscles. (From Owen, Anatomy ofVertehrutes, by permission.). Fig. 373. Plecostomus Commersonii, Val. A, piece of lepidotnch, enlarged. B, several scales, fromwhich the skin has been removed on the left. C, small piece ot the surface of a scale, muchenlar-ed D section through a developing denticle of Hypostoma (D, after Hertwig). as,smooth anterior region; d, denticle; , dentine cap; e«, enamel cap ; c], epidermis; ,lateral-line canal; --(, enamel organ ; p, pulp ; sc, scale ; , segment of lepidotricli. Sub-Family Malapterurinae. Mcdapterurus, Lac.; Africa ; witha large electric organ (Figs. 371, 372) (Fritscli [141]). 384 TELEOSTEI Family Callichthyidae. The small mouth is ventral and providedwith minute teeth. The body is armoured with two rows of overlappingbony plates which, like the surface of the cranial bones, are beset attheir hinder edge with movable denticles (p. 369). There is a strongpectoral spine and an adipose fin. Callichthys, L. ; Corydoras, Lac.—S. America. Family Loricariidae. These are closely allied to the last,
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
