. Synopsis of the fishes of North America [microform]. Fishes; Poissons. ACANTHOPTERI. 397 Order {The Spiny-rayed Fishes.) Crauiiiin normal, symmetrical; tbo maxillary bone distinct from the nreinaxillary, which forms the border of the mouth. Bones of the iiiaiidihle distinct. Gills normal, laminated, rarely reticulated. Gill- opeiiiiigs in advance of the pectorals. Opercular api)avatus complete. Basal bonos of pectorals not enlarged. Pharyngeals well developed, the third superior pharyngeal usually largest. Lower pharyngeals separate or united. Ventral lii;s variously placed,
. Synopsis of the fishes of North America [microform]. Fishes; Poissons. ACANTHOPTERI. 397 Order {The Spiny-rayed Fishes.) Crauiiiin normal, symmetrical; tbo maxillary bone distinct from the nreinaxillary, which forms the border of the mouth. Bones of the iiiaiidihle distinct. Gills normal, laminated, rarely reticulated. Gill- opeiiiiigs in advance of the pectorals. Opercular api)avatus complete. Basal bonos of pectorals not enlarged. Pharyngeals well developed, the third superior pharyngeal usually largest. Lower pharyngeals separate or united. Ventral lii;s variously placed, often wanting, nor- mally thoracic and sixrayed, the first ray 8i)inous. Anterior rays of dorsal and anal normally developed sm spines, but often soft and artic- ulate. Air-bladder, if present, without pneumatic duct. The most ex- tensive of the orders of fishes, comprising a great variety of forms. [axayOa, spiue; -T£f>i>'^,ixU.) {AcanlhoiJf'^flKjii, Pharynyofinathi, antl Anacanthini Giiiithcr, i, ii, iii, Iv. cxchisivc of various lainiUes. Orders Pcrcesocts, Fcrcomorpln, and PkarijtKjognalUi Copo, Traus. AmiT. Phil. «oc. 1870, 456.) ANALYSIS OF FAMILIES OF ACANTIIOI'TERt. A. Voiitral tins abdominal; doraala two, well sopai'atcd. {Perccaoccs.) B. Donfitiou strong; vortcbrm '24 SPUYiiiENiDiE, 67. BB. Dentition feeble; vertcbric more than 24; earnivorons Atuerinid^, 06. BBB. Dentition feeble; vcrtebriBt>4; linmophagous MuGILlD^, 65. AA. Ventral tins, if jjresent, thoracic or jugular. C. Ventral region an ithout suekiug-disk. D. Suborbital without bony stay. E. Ventral lins present, the rays in normal number,* I, 5. F. Lower pharyngeal bones separate (except in certain Sciwiihlw)', gills 4, a slit behind the last. G. Gill-menilrancs free from the istlimus. H. Spinous dorsal transformed into a lamellated sncklng-disk, situated , on the top of the head. EcnKNKIDID/E, 70. HH. Spinous dorsal not transformed into a sucking-disk. I, Scales small or obsolete, mostly cycloid;
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfishes, bookyear1882
