A treatise on zoology . Fig. nebulosa, Q. and G. (After Giinther.) Naseus, Cuv., Acanthuras, Forsk. (Fig. 446)—tropical seas ; Eocene,Europe. Aulorhamphus, de G., Eocene; and Ajwstasis, Kr., Miocene,Europe. Zanclus, C. and V. ; Colocojms, Gill; Prionurus, Lac.—tropicalseas. SoBDivisiox B. The opercular bones become reduced, the myodomeand the ribs are lost; if present the pelvic bones are fused in the middle line ; also the pelvic fins,which are reduced to a spineand a few small dermal rays,may disappear gill-opening is verynarrow (Regan [344]). Branch 1. Scleroderm

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A treatise on zoology . Fig. nebulosa, Q. and G. (After Giinther.) Naseus, Cuv., Acanthuras, Forsk. (Fig. 446)—tropical seas ; Eocene,Europe. Aulorhamphus, de G., Eocene; and Ajwstasis, Kr., Miocene,Europe. Zanclus, C. and V. ; Colocojms, Gill; Prionurus, Lac.—tropicalseas. SoBDivisiox B. The opercular bones become reduced, the myodomeand the ribs are lost; if present the pelvic bones are fused in the middle line ; also the pelvic fins,which are reduced to a spineand a few small dermal rays,may disappear gill-opening is verynarrow (Regan [344]). Branch 1. supraclavicle is verticaland the pectoral radialsnormally developed (, B). The dentary isfused to the articular, and(AfterGiintliir.) the teeth usually strong andincisor-like (Fig. 448). FourThe orbit is carried very high up on the.

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