. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 282 JOHANNA M. D1ECKMANN. ticulum (recess), a feature which appears, among the forms so far described, only in the Plethodons and Gyrinophilus. The sperm-storing organ is confined to the region above the dorsal elevation. It consists of a few tubules (three on one side and four on the other in one of the animals), which open into the lateral walls of the dorsal slit in its extreme cephalic portion, just at the point where it passes over into the dorsal expansion. From these openings, the long slender necks of the tubules ext
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 282 JOHANNA M. D1ECKMANN. ticulum (recess), a feature which appears, among the forms so far described, only in the Plethodons and Gyrinophilus. The sperm-storing organ is confined to the region above the dorsal elevation. It consists of a few tubules (three on one side and four on the other in one of the animals), which open into the lateral walls of the dorsal slit in its extreme cephalic portion, just at the point where it passes over into the dorsal expansion. From these openings, the long slender necks of the tubules extend caudally; each neck terminates in an irregularly branched end- piece. Branching of spermathecal tubules, observed in only a few instances in the series of Gyrinophilus, is conspicuous in the end- pieces of the tubules of Hemidactylium. Moreover, some of the terminal branches in this species are not bulbous, but longer and more slender, resembling large tubular glands. The region in o /\i oog ^-ttfss. 3 30 S? «^liS%8 | /r^. .vVA \> rt vo o. FIG. i. Cloaca of Hemidactylium female (adult, cm.), at a level some distance caudal to the openings of the spermathecal tubules. In the dorsal wall of the cloaca, the two folds comprising the dorsal elevation are seen, with the median dorsal slit between them. Just above, on each side, are the narrow necks of spermathecal tubules, which open separately into the dorsal slit cephalad to this level; above these, the expanded, branched end-pieces of spermathecal tubules. Pigment is seen between the two groups of tubules, around the organ as a whole, and in the wall of the cloaca. (X 30.) which the spermathecal tubules open is free from glands, but opening into the more caudal portion of the dorsal slit, inter- mingled with the caudal ends of the spermathecal tubules, there is a group of seven or eight pairs of very small, slightly tortuous gland Please note that these images are extracted from scanned page images that may h
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
