. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1—3 29/1978 Passerine Finches 133 seed-cup is thin, and the preglossale and M. hg. anterior are absent. Most notable is the insertion of the M. genioglossus in Ploceus which inserts (noted by an asterisk) into the ventral mucosa of the tongue superficial to the M. stylohyoideus (Fig. 7). The musculature must be dissected with care to separate the insertion of the M. genioglossus from the body of the M. stylohyoideus; these muscles are not continuous, i. e., the
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1—3 29/1978 Passerine Finches 133 seed-cup is thin, and the preglossale and M. hg. anterior are absent. Most notable is the insertion of the M. genioglossus in Ploceus which inserts (noted by an asterisk) into the ventral mucosa of the tongue superficial to the M. stylohyoideus (Fig. 7). The musculature must be dissected with care to separate the insertion of the M. genioglossus from the body of the M. stylohyoideus; these muscles are not continuous, i. e., their fibers are not connected nor do they merge. In Foudia most of the fibers. Fig. 7: The tongue musculature of Ploceus seen in ventral view to show the insertion (marked with an asterisk) of the M. genioglossus (M g g) into the mucosa of the ventral edge of the tongue. Because the mucosa has been dissected away with the rest of the overlying tissue, the muscle appears to end abruptly without attaching to any structure. It is not continuous with the M. ceratoglossus (M c g) or any other tongue muscle. of the M. genioglossus insert ventrally but some curve dorsally and insert into the dorsal mucosa similar to the posterior slip of this muscle in the plocepasserines and most other passerine birds. This condition of the M. genioglossus is not seen in any other passerine bird, and we cannot provide any functional explanation for its evolution from the normal passeriform arrangement. Viduinae: We examined the tongue of Vidua (Fig. 8) which is much like that of the other ploceids except for a shorter, thicker seed-cup. The paraglossale is broadly sigmoid in shape and terminates at the ventral edge of the tongue. The preglossale and M. hg. anterior are absent. And. 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
Size: 2070px × 1208px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcoll, booksubjectbiology, booksubjectzoology
