. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. michaelsen: African oligochaeta 461 Female pores indistinct, laterally at segment XIV or XVI. External organs of puberty (fig. 13) very characteristic: A large, transversely oval glandular cushion situated medio-ventrally at seg- ment XIX of which it occupies the whole length, a second medio- ventrally placed cushion of different appearance at segment XXIV, not only occupying the whole length of this segment but encroaching on intersegmental furrows XXIII/XXIV and XXIV/XXV and almost reaching the centres of segments X
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. michaelsen: African oligochaeta 461 Female pores indistinct, laterally at segment XIV or XVI. External organs of puberty (fig. 13) very characteristic: A large, transversely oval glandular cushion situated medio-ventrally at seg- ment XIX of which it occupies the whole length, a second medio- ventrally placed cushion of different appearance at segment XXIV, not only occupying the whole length of this segment but encroaching on intersegmental furrows XXIII/XXIV and XXIV/XXV and almost reaching the centres of segments XXIII and XXV; in segment XXIV. Fig. 13. Polytoreutus malindinus. Ventral view of the fore-end, schemati- cally. this cushion expands laterally to form a roundish projection on either side; the middle part of the cushion is flattened, if not slightly sunk, and bears a narrow, medio-ventral, transverse depression with spindle- shaped contour slightly anterior to the centre of segment XXIV. In addition to these postclitellar organs of puberty are two rather indis- tinct intraclitellar ones, two broad, medio-ventral cushions occupying the whole length and lower part of segments XV and XVI. These intraclitellian organs have somewhat the appearance of blunt-edged thickenings of the body wall. Internal Anatomy. In order to mutilate the unique type as little as possible I have avoided dissecting the anterior end. Septum X/XI (as is presumably the case with some of those preceding it) is moder-. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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