. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 4J2 CRUSTACEA. British species, having the frontal rostrum not extending beyond the peduncle of the superior antennae, and nearly straight. [Other genera have been proposed by Risso, Leach, P. Roux, and M. Edwards, founded upon variations in the form and proportions of the legs.] Pasipfxea, Savigny, is a very interesting genus, allied to the preceding in the upper antennae, terminated by two filaments; the four fore-legs terminated by a didactyle cla
. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 4J2 CRUSTACEA. British species, having the frontal rostrum not extending beyond the peduncle of the superior antennae, and nearly straight. [Other genera have been proposed by Risso, Leach, P. Roux, and M. Edwards, founded upon variations in the form and proportions of the legs.] Pasipfxea, Savigny, is a very interesting genus, allied to the preceding in the upper antennae, terminated by two filaments; the four fore-legs terminated by a didactyle claw, but [differing from all the other Carides] in having the external base of the legs furnished with a thread-like appendage; the claw-legs are larger, nearly equal in size, very slender, and filiform ; the body is very long, very compressed, and very soft. Type, P. Sivado, Risso. Found in the Mediterranean, especially in the Bay of Nice, where it is very abundant.* The fifth and last section of the Macroura—that of the Schizopoda— appears to unite them with the subsequent order. The legs are very slender, like flattened threads, and not furnished with claws, but having a longer or shorter lateral appendage arising on their outside near the base, and [the legs are] fitted only for swimming. The eggs are borne between them, and not under the tail. The ocular peduncles are very short. As in the majority of the Macroura, the front is prolonged into a kind of rostrum. The carapax is very slender. The tail terminated, as is customary, in a swimmeret. These Crustacea are minute and marine. In some, the eyes are very apparent; the lateral antenna; furnished with a scale; the intermediate ones terminated by two filaments, and composed of many minute joints, as in the Mysis, Latr., has the antennae and legs uncovered; the carapax long, nearly square, or cylindrical; the eyes close together; and the legs capillary, and formed of two thread-like fila- ments. Type, M. Fabri
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectzoology, bookyear1854
