. Elementary text-book of zoology. Zoology. 368 ANNELIDA. The form of the movable sette varies extremely, and affords a good character for the classification of families and genera. According to the strength, form, and mode of ending (fig. 298), the following. a, ic a e. / 5 FIG 298.—Setfe of different Polycliietit (after Malmgren and Claparede). a, Hooked seta of Sabdtii ei-uxxicoraig; l>, of Te rebel I a Dmiielggeni; c, seta with piral ridge from tStkenelais ; d, lance-shaped seta of Phylloehcetoptemu; e, of Sabella erassicornis ; f, at Sabella pavonis; ff, Composite sickle-shaped seta of
. Elementary text-book of zoology. Zoology. 368 ANNELIDA. The form of the movable sette varies extremely, and affords a good character for the classification of families and genera. According to the strength, form, and mode of ending (fig. 298), the following. a, ic a e. / 5 FIG 298.—Setfe of different Polycliietit (after Malmgren and Claparede). a, Hooked seta of Sabdtii ei-uxxicoraig; l>, of Te rebel I a Dmiielggeni; c, seta with piral ridge from tStkenelais ; d, lance-shaped seta of Phylloehcetoptemu; e, of Sabella erassicornis ; f, at Sabella pavonis; ff, Composite sickle-shaped seta of Nerds cultrifera. forms can be distinguished : hair-setae, hooked-seta?, fiat-setae (pcdece), lance-seta?, sickle-shaped seta?, etc* When the parapoclia and their appendages are com- pletely wanting, the seta? are 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 seta? is small (Oligo- chceta}. The seta? may, on the contrary, be pre- sent in great number, so that the integument on either side seems to be covered with long hairs and seta?, 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. New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
