. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. a, lie d e } *m 3 Fis 298.—Sette of different PolycHoeta (after Malmgreu and Claparede). a, Hooked seta of Salclla crassicornii ; I, of Terebella Danielsseni; c, seta witb spiral ridge from Sthenelaix; d, lance-shaped seta of Phylloch&topterus; e, of Stibella crassicornis ; f, of Sabella pavonis; g, Composite sickle-shaped seta of Nereis cuUrifera. forms can be distinguished : hair-setae, hooked-setae, flat-setae (palece), lance-setae, sickle-shaped setae, etc. When the parapodia and th
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. a, lie d e } *m 3 Fis 298.—Sette of different PolycHoeta (after Malmgreu and Claparede). a, Hooked seta of Salclla crassicornii ; I, of Terebella Danielsseni; c, seta witb spiral ridge from Sthenelaix; d, lance-shaped seta of Phylloch&topterus; e, of Stibella crassicornis ; f, of Sabella pavonis; g, Composite sickle-shaped seta of Nereis cuUrifera. forms can be distinguished : hair-setae, hooked-setae, flat-setae (palece), lance-setae, sickle-shaped setae, etc. When the parapodia and their appendages are com- pletely setae are. •wanting, FIG. 21)9. — Anterior end of Polynoe cxtenuata, the first elytron on the left hand being removed (after Cla- parede). The two setse of the oral segment are visible ; SI, Elytra. the embedded in pits in the integument, and are arranged either in one or two rows on either side, that is, in a lateral ventral row on either side, or in a ven- tral row and a dorsal row on either side. In such cases the number of setae is small (Oligo- chceta). The setae may, on the contrary, be pre- sent in great number, so that the integument on either side seems to oe covered with long hairs and setae, and a thick felt of hairs shining with a metallic lustre is distributed over the whole dorsal. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
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Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1890
