. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 456 bulletin: museum of comparative zoology Posterior male organs (fig. 10). A pair of euprostates pass from the medio-ventral male pore first sideways, then upwards and backwards through 3 or more (till 7) segments. Their glandular, ental part (eu) is sausage-shaped, about 11 mm. in length and at the ectal end ca mm. thick, entalwards slightly diminishing in thickness, simply and more or less irregularly bent, closely attached to the intestine. Its wall is rather thick, consisting principally of long, slender, gl
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 456 bulletin: museum of comparative zoology Posterior male organs (fig. 10). A pair of euprostates pass from the medio-ventral male pore first sideways, then upwards and backwards through 3 or more (till 7) segments. Their glandular, ental part (eu) is sausage-shaped, about 11 mm. in length and at the ectal end ca mm. thick, entalwards slightly diminishing in thickness, simply and more or less irregularly bent, closely attached to the intestine. Its wall is rather thick, consisting principally of long, slender, glandular cells placed vertically against the outer surface which is provided sparsely with muscle fibres; lumen moderately wide, somewhat reduced by 4 or 5 irregular, longitudinal ridges which project into it. In a. Fig. 10. Polytoreutus loveridgei. Ectal part of an euprostata with the ectal end of the relative vasa deferentia and the muscular euprostata duct. transverse section its contour is very irregularly stellate. The ectal end of the glandular part is modified in a very characteristic manner; in the organ viewed "in toto" it looks like a somewhat flattened bulb which is nearly twice as thick as the unmodified euprostate tube from which it is sharply distinguished, at least posteriorly, less distinctly or not at all anteriorly. As viewed in a series of sections it appears somewhat different in the two specimens. In the cotype (fig. 10) this bulb appears as a somewhat widened continuation of the euprostatic tube which is curved to form a short, narrow, S-shaped, double loop only marked externally by a very slight furrow; walls and ridges of the main portion of the euprostate tube are continued into this modified terminal part where their regular longitudinal arrangement gives place to a very irregular one. The vas deferens (vd) reaches the bulb on the anterior side of its first or ental turn, its axial channel, piercing the wall of the bulb in a straight vertical
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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
