. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. DIPNOr. 267 five angled box composed of polygonal body plates, firmly united. Ostracion Lactophrys, trunk-fishes. Ostracion first appear in the eocene. Gymno- DONTi, spinous dorsal lacking; scales spiniform or absent; jaws with enamelled plates, but without distinct teeth. Tetrodon, Diodon, Chilomyc- terus, etc., swell-fishes or globe-fishes, etc., the common names arising from the powers of inflation possessed by them. Mola (Orthagoriscus), sun-fish, the most bizarre of fishes, seemingly but a large head with fins attached.


. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. DIPNOr. 267 five angled box composed of polygonal body plates, firmly united. Ostracion Lactophrys, trunk-fishes. Ostracion first appear in the eocene. Gymno- DONTi, spinous dorsal lacking; scales spiniform or absent; jaws with enamelled plates, but without distinct teeth. Tetrodon, Diodon, Chilomyc- terus, etc., swell-fishes or globe-fishes, etc., the common names arising from the powers of inflation possessed by them. Mola (Orthagoriscus), sun-fish, the most bizarre of fishes, seemingly but a large head with fins attached. P'ossils doubtfully referred to Mola occur in the British creta- ceous ; Diodon appears in the Fig. 268. Sun-fish, Mola rotunda, after Putnam. SUB-CLASS III. DIPNOI (DIPNEUSTES). Fishes with partially ossified cartilage, numerous membrane bones, and persistent notochord; skull autostylic; a membra- nous operculum ; tail diphycercal; paired fins archiptergial or reduced ; heart with multivalvular conus, a spiral valve in in-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company


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