. Bulletin - United States National Museum. Science. 644 BULLETIN 100, UNITED STATES NATIONAL Fig. 3. -Arrangement of etespots in Pseudoceros rdbrotentacolatus. buff bands of almost similar breadth, each of which was bordered by a narrow, deep, tawny-brown stripe. One followed the median line; the other two ran parallel to it, with an interspace as broad as or broader than the buff bands. The ventral sur- face was of a uniform pale buff color with a bright cobalt marginal stripe, just as the dorsal. Numerous small eye- spots are found irregu- larly arranged along the margin of the ten
. Bulletin - United States National Museum. Science. 644 BULLETIN 100, UNITED STATES NATIONAL Fig. 3. -Arrangement of etespots in Pseudoceros rdbrotentacolatus. buff bands of almost similar breadth, each of which was bordered by a narrow, deep, tawny-brown stripe. One followed the median line; the other two ran parallel to it, with an interspace as broad as or broader than the buff bands. The ventral sur- face was of a uniform pale buff color with a bright cobalt marginal stripe, just as the dorsal. Numerous small eye- spots are found irregu- larly arranged along the margin of the tentacular folds and also occur forming a crowded cluster over the brain. The mouth is placed at the beginning of the middle third of the body and opens nearly into the middle of the much-folded pharynx, which is nearly one-third as long as the body. The main gut is narrow, of a considerable length, and gives rise to numerous pairs of lateral branches, the subdivisions of which do not undergo anas- tomosis. At the hind end the main trunk becomes somewhat dilated. The ventral sucker occurs a little anterior to the hind end of the middle third of the body. The male gonopore lies in the median line slightly behind the pharyngeal cavity. The vas deferens pursues a backward course and bends inward a lit- tle behind the genital opening, finally to unite with its mate of the opposite side into a median canal, which rises upward to continue with the anteriorly di- rected, wide seminal vesicle hav- ing a thick muscular coating composed of two sets of fibers, circular and longitudinal. An- teriorly the vesicle gives rise to a slender duct, the ejaculatory duct, which turns abruptly down- ward just behind the prostate, and after receiving the duct of this organ enters the penis. The prostate is of a pyriform shape and lies just dorsal to the base of the penis, which is represented by a long chitinous stylet hanging vertically in the sheath. The antrum. Please note that these images are extra
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
