The annals and magazine of natural history : zoology, botany, and geology . Cysticercus TcenitB Gritnaldii. View of tlie animal cut tlirougli trans-versely at about the middle. Much magnified. N., coils of the neck cut across in various directions; P., pareuchvmeof the bladder. wall of the bladder is firm in consistency, but cuts veryeasily. On opening a specimen, the wall is found to be verythick on two sides and comparatively tliin on the other two(fig. 1, P.). The appearance of a small specimen on beingthus opened is much like that of the well-known forms ofCr/sticercuSf such as C. pisiform
The annals and magazine of natural history : zoology, botany, and geology . Cysticercus TcenitB Gritnaldii. View of tlie animal cut tlirougli trans-versely at about the middle. Much magnified. N., coils of the neck cut across in various directions; P., pareuchvmeof the bladder. wall of the bladder is firm in consistency, but cuts veryeasily. On opening a specimen, the wall is found to be verythick on two sides and comparatively tliin on the other two(fig. 1, P.). The appearance of a small specimen on beingthus opened is much like that of the well-known forms ofCr/sticercuSf such as C. pisiformis, except as regards the Cysticeicus/rom a rare Dolphin. 419 unusual tlucknesa of the wall of the bladder. The largerspecimens, however, ihow a very reniarkublo structure, lliecavity of tho bladder is almost entirely filled by an onor-niously lon^ coiled tube, which on further investigation is Fig. Cysticercus Trfixirr. Crrimahlii. Portiou of n trnnsvorse section nearthe hinder end, passing through the Bcolex. cuticle ; M., muscle-lnyers; N., coils of the neck cut across ;P., parenchyme of the bladder; 6., scolex. found to bo continuous at one end with the wall of thebladder at the point of invagination, and at the other end bycareful search may be seen to end blindly in a slight bulbousexj^ansion which contains a scolex. Tho tube, in fact, is 420 Mr. H. A. Baylis on a remarkable simply an extraordinarily elongated neck/ precociouslydeveloped within the bladder of the cysticercus. The coils ofthis tube run in various directions (figs. 1 & 2, N.), but inthe main antero-posteriorly. After fixation of the worm itis impossible to straighten out this neck for the purpose ofmeasuring it; but Moniez calculated that in one moderate-sized specimen examined by him it measured centimetres,and the length was probably greater still in larger must, at all events, be m
Size: 1169px × 2138px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookidser9annalsmaga, booksubjectnaturalhistory
