单词 | Dibranchiata |
例句 | The division of Cephalopoda in which the arms are furnished with cupÐshaped suckers, as the cuttlefishes, squids, and octopus; the Dibranchiata. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z All of these have two plume-like gills—one on each side—and so are called Dibranchiata; and in the eight-armed section of these is the argonaut or Paper Nautilus. Sea Monsters Unmasked and Sea Fables Explained 2011-07-11T02:00:07.857Z Sense-organs are highly developed; the eye exhibits a very special elaboration of structure in the Dibranchiata, and a remarkable archaic form in the nautilus. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" They are divided into two orders, the Dibranchiata, having two gills and eight or ten sucker-bearing arms, and the Tetrabranchiata, with four gills and numerous arms without suckers. The Gutenberg Webster's Unabridged Dictionary Section C French fishermen give them the name "cuckoldfish," and they belong to the class Cephalopoda, family Dibranchiata, consisting of themselves together with cuttlefish and argonauts. Twenty Thousand Leagues Under the Sea There is no branchial osphradium in the Dibranchiata corresponding to that of Nautilus, but the olfactory organ or rhinophore near the eye is present. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In Sepia and the majority of the Dibranchiata it is a simple pit, in some of the Oigopsida it is a projection which may be stalked. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" With reference to the latter, it appears highly probable that the tubular sheath represents the cup of a sucker such as is found on the fore-foot of the Dibranchiata. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Chromatophores.—These are characteristic of the Dibranchiata, apparently absent in Nautilus. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In most of the Dibranchiata there are two pairs of salivary glands. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In the males of the Dibranchiata one of the arms is more or less modified in connexion with the reproductive function, and is called the “hectocotylized arm.” Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" Posterior salivary glands are not developed in Nautilus, but on each side in the wall of the buccal mass is a gland corresponding to the anterior salivary gland of the Dibranchiata. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In the Dibranchiata the shell shows various stages of degeneration, culminating in its complete disappearance in Octopus. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" There can be little doubt that they gave rise to the Dibranchiata. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The first appearance of the shell-sac in Dibranchiata is shown in figs. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In the living Dibranchiata other than Spirula the phragmacone and rostrum have become very rudimentary. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" In the other direction the evidence seems to prove that the Dibranchiata with only two renal ducts have been derived from the Tetrabranchiata. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" The acini of the large liver of Nautilus are compacted into a solid reddish-brown mass by a firm 690 membrane, as also is the case in the Dibranchiata. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" |
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