. The Cambridge natural history. Zoology. Fig. 278.âTransYerse sections through the proboscis of Ph. chcmjbdaeus. A, Anterior, through the principal ganglionic mass (6) ; B, posterior, at'the level of the sieve- hairs (A). Coec, Intestinal caeca ; BiL M, dilator muscles ; JV, inner nerve-ganglion, with circular commissure ; JV', outer nerve ; or, chitinous lining of oraf cavity ' RM, , retractor muscles. (After Dohrn.) ' which succeeds the masticatory apparatus is likewise provided with extrinsic muscles. The oesophagus is followed by a long gastric cavity, which sends forth caecal divert
. The Cambridge natural history. Zoology. Fig. 278.âTransYerse sections through the proboscis of Ph. chcmjbdaeus. A, Anterior, through the principal ganglionic mass (6) ; B, posterior, at'the level of the sieve- hairs (A). Coec, Intestinal caeca ; BiL M, dilator muscles ; JV, inner nerve-ganglion, with circular commissure ; JV', outer nerve ; or, chitinous lining of oraf cavity ' RM, , retractor muscles. (After Dohrn.) ' which succeeds the masticatory apparatus is likewise provided with extrinsic muscles. The oesophagus is followed by a long gastric cavity, which sends forth caecal diverticula into the chelo- phores (when these are present), and four immensely long ones into the ambulatory legs. The caeca are attached to the walls of the limb cavities, especially at their extremities in the tarsi, by suspensory threads of connective tissue, and the whole gut, central and diverticular, is further supported by a horizontal septal mem- brane, running through body and legs, which separates the dorsal blood-vessel and sinus from the gut, the nervous system and the ventral sinus, giving support also to the reproduc- tive glands. A short and simple rectum follows the gastric cavity. In Fhoxichihis, which lacks the three anterior appendages in the female and the two anterior in the male, two pairs of caeca run from the gut into the cavity of the proboscis (Fig. 278, B, coec.)} ' Dohrn, t. cit. p. Fig. 279. â Transverse section through the basal joint of the third leg in Phoxichilus charyh- daeus, 9 â Cut, Cuticle ; Hyp, hypodermis ; Tnt, intestinal cae- cum ; N, nerve-cord ; Ov, ovary ; Sept, septum. (After Dohrn.). 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. ,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
