. Forms of animal life; being outlines of zoological classification based upon anatomical investigation and illustrated by descriptions of specimens and of figures . pp. 62-64. For the stomatogastric system, see Brandt, Ann. Sci. Nat., Ser. ii.,torn, v., 1836, pi. iv., figs. I, 2, pp. 87-91. For the olfactory (auditory?) organ, as carried by the internal orsuperior pair of antennae, see Gerstaecker, Bd. v., p. 357, andLa Valette, Leydig, and Fritz MiiUer, cit. in loc. See alsoSpence Bate, Sessile-Eyed Crustacea, vol. i., p. ix. For the formation of the coecal sac opening into the commencemento
. Forms of animal life; being outlines of zoological classification based upon anatomical investigation and illustrated by descriptions of specimens and of figures . pp. 62-64. For the stomatogastric system, see Brandt, Ann. Sci. Nat., Ser. ii.,torn, v., 1836, pi. iv., figs. I, 2, pp. 87-91. For the olfactory (auditory?) organ, as carried by the internal orsuperior pair of antennae, see Gerstaecker, Bd. v., p. 357, andLa Valette, Leydig, and Fritz MiiUer, cit. in loc. See alsoSpence Bate, Sessile-Eyed Crustacea, vol. i., p. ix. For the formation of the coecal sac opening into the commencementof the duodenum out of the yolk-sac, see Rathke, Entwick-elungsgeschichte der Flusskrebses, p. 64. For other coecalappendages to the digestive tract of Crustacea, see Milne Ed-wards, Hist. Nat. des Crustaces, 1834, pp. 76, 77; and for theformation of the liver by a bilateral out-pouching of the yolk-sac, see Rathke, I. c. p. 49, and Abhandlungen zur Buldungs-undEntwickelungsgeschichte, Theil. i., 1832, p. 15; Theil. ii., 1833,p. 78, in which latter memoir the relation of intestinal tract andyolk-sac is shown to be different in Oniscus and Astacus. PLATE Earth Worm, Lumbrictis Terrestris. PLATE VIII. Eaeth Worm [Lumhricus Terrestris). The fifteen anterior segments of an Earth Worm {Lumbricus Terrestris), numberedfrom before backwards, the upper lip counting as the first segment. The integ-ument has been divided^ except in the first segment,down the middle dorsal line, and the greater part of the dig-estivetract has been removed, together with the pseud-haemal vessels,so as to show the nervous, muciparous, and reproductive organs. a I. Bilohed supra-oesophageal ganglionic mass; giving off fromeither outer angle a nerve which bifurcates very soon afterits origin, and passes to distribute itself in the tactile upperlip. a 2. Visceral or stomatogastric system of the right side, con-sisting of a long ganglion lying upon the lateral wall of thepharynx, and running jmrallel with
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
