A history of the British sessile-eyed Crustacea . st situation, that at a considerable distancethe patch of white colour, produced by their presence,may be observed when the whale comes to the surface tobreathe. In this situation the individuals of C. ovalisarrange themselves with considerable regularity, bywhich they are distinguished from C. gracilis, which arescattered about more irregularly. The young of C ovalis, as figured by M. GuerinMeneville, in the Iconographie du Regne Animal, ismore regularly elongate-ovate than the young of C. ceti, asfigured above by ourselves, with the legs almo
A history of the British sessile-eyed Crustacea . st situation, that at a considerable distancethe patch of white colour, produced by their presence,may be observed when the whale comes to the surface tobreathe. In this situation the individuals of C. ovalisarrange themselves with considerable regularity, bywhich they are distinguished from C. gracilis, which arescattered about more irregularly. The young of C ovalis, as figured by M. GuerinMeneville, in the Iconographie du Regne Animal, ismore regularly elongate-ovate than the young of C. ceti, asfigured above by ourselves, with the legs almost cylin-drical, the fourth joint but moderately dilated ; indeed,according to M. Milne Edwards (Ann. Sci. Nat. vol. 329), Les jeunes Cyamus ont une forme suelte etelancee, all the segments being perfectly alike, re-sembling portions of a cylinder with the legs greles,cylindriques, et parfaitement extensibles; and with thebranchial vesicles not more developed than in Proto,Caprella, &c. 94 AMPHIPODA. ABERRAXTTA- ? CYAMID^.. F^. CYAMUS GRACILIS. Specific character. Body small, oblong ; segments of the body emarginateat their lateral margins. Third and fourth segments of the body with apedunculated bianchia on each side, each furnished at its base with two veryshort appendages. Second pair of hands with the palm slightly concave. Length \ inch. Cijamus gracilis. Roussel de Vauzeme, Ann. Sci. Nat. 2nd ser. vol. 243, pL 8, fig. 24, 25. Milne Edwards, Hist. , iii. p. 113. Sience Bate, Cat. Amph. p. 366, pi. Iviii. fig. 1. Gosse, Mar. Zool. 131. White, Pop. Hist. Brit. Crust, p. 219. Our figures of this species represent, firstly (the cen-tral figure), the animal as drawn of the natural size byM. Roussel de Vauzeme ; secondly (the right-handfigure), a copy of Mr. Spence Bates figure (PI. 58,fig. 1), drawn from individuals in the Paris Museum,found at the Cape of Good Hope, and also taken duringthe voyage of the Chevrotte, but without any in
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Keywords: ., bookauthor, bookcentury1800, bookdecade1860, booksubjectcrustacea
