...armatus,Lacep); one was an Ophiocephalus, and one aPolyacanthus, with no serræ on the gills... 
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...These little animals are possessed of gills,and, were it not for the legs, would most nearly resemble aminiature cat-fish...
W. E. Webb 「Buffalo Land」
...The external gills are long and filamentous, and the yolksac is large...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...By thetime the larvae have developed to stage 21, external gills are present, thecaudal musculature and caudal fin have been differentiated, and the head isdistinguishable from the body...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...It has a waterchamber in the large intestines, includingalso the respiratory tracheal gills,from which the water can be suddenlysquirted which throws the insect forward...
Leonard Haseman 「An Elementary Study of Insects」
...But the larva of a stone-fly,a dragon-fly, or a may-fly is adapted more completely than these foraquatic life; it can, by means of gills of some kind, breathe the airdissolved in water...
Geo. H. Carpenter 「The Life-Story of Insects」
...See the gills moving swiftly back and forth; they look as though thelarva wished to swim with them, but this is not why it moves them soconstantly...
Margaret Warner Morley 「The Insect Folk」
...Nellie is asking what gills are...
Margaret Warner Morley 「The Insect Folk」
...Some larvæ breathe by gills, and do not havespiracles until they are grown up, but all grown-up insects breathe byspiracles...
Margaret Warner Morley 「The Insect Folk」
...He had atremendously stiff stock on—so hard that no pressure made it wrinkle, andso high that his pointed gills could hardly peer above it...
R. S. Surtees 「Mr. Sponge's Sporting Tour」
...The gills are exchanged for lungs, the legssupersede the tail and the internal system undergoes correspondingchange...
Various 「Natural History in Anecdote」
...Anal gills fleshy and protuberantas a blunt ring surrounding the anus ()...
Horace Gunthorp 「Journal of Entomology and Zoology」
...From the head-gut we get not only the gills, the organs of water-breathing inthe lower vertebrates, but also the lungs, the organs of atmospheric breathingin the five higher classes...
Ernst Haeckel 「The Evolution of Man」
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