Io) the whole dorsal region of the abdomen, but sometimes leaving as many as four terga exposed (fig. [Please select]
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Polyphémus enim postquam terga ovium manibus tráctávit, eás praeteríre passus est. [Please select]
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That margin in the scuta and terga which opens and _shuts_ for the exsertion and retraction of the cirri, I have called the Occludent margin. [Please select]
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Atque ita, respiciens comites sua terga sequentes, Procubuit, teneraque latus submisit in herba. [Please select]
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All the valves, even in the same species, are subject to considerable variation in shape, more especially the terga. [Please select]
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Scuta and terga with one or more diagonal lines of dark greenish-brown, square, slightly depressed marks. [Please select]
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_Carina_; the interspace between the carina and the scuta and terga is not wide. [Please select]
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Bennett, I believe, in the Atlantic, in which the extreme narrowness of the carina and of the terga (Pl.) [Please select]
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Again, in some other specimens, the terga were as narrow as in Mr. [Please select]
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The terga, in the first variety, somewhat resemble in shape the scuta of _Conchoderma aurita_. [Please select]
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The latter, in well preserved old specimens, may often be detected on the umbones of the scuta, terga, and carina, but not on the umbones of any other valves. [Please select]
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