. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE HISTORY OF EPIBDFLLA MELLENI MACCALLUM 93 channels in the body and also in the posterior sucker are identical in position and in connections with those of the larva which will be described later. The excretory system of the adult is obviously an elaboration of the pattern present in the larva, but the details of the system of the adult have not been traced. It is considered doubtful, however, whether there are four main longitudinal channels posterior to the excretory vesicles as described by MacCallum (1927), and it is
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE HISTORY OF EPIBDFLLA MELLENI MACCALLUM 93 channels in the body and also in the posterior sucker are identical in position and in connections with those of the larva which will be described later. The excretory system of the adult is obviously an elaboration of the pattern present in the larva, but the details of the system of the adult have not been traced. It is considered doubtful, however, whether there are four main longitudinal channels posterior to the excretory vesicles as described by MacCallum (1927), and it is. TEXT FIG. 1. Semi-diagrammatic drawing of reproductive system of Epibdella melleni. Abbreviations: c, cirrus; cs, cirrus sac; gs, genital sinus; m, mouth; mb, muscular band through the testis; mt, metraterm; od, oviduct; os, oral sucker; of, ootype; ov, ovary; pg, prostate gland; pr, prostatic reservoir; sg, 'shell gland'; sgd, 'shell gland' duct; sr, seminal receptacle; sv, seminal vesicle; t, testis, vd, vas deferens; yd, vitelline duct; yr, yolk reservoir. thought probable that in his description the nervous system has been confused with the excretory. The male reproductive system (text figure 1) is rather unusual in several respects. There are two testes (approximately .4 by .5 mm- in mm. specimens) which lie in the mid-portion of the body ; they are almost round in general outline with a lobate margin as seen from the dorsal or ventral surfaces, the amount of lobulation apparently increasing with the size of the specimen. They are not smooth. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Cl
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
