468 PllOCEEDINGS OF THE XAriON/\X, MUSEUM vol. 85 



The testis sacs of x and xi are unpaired and ventral. The seminal 

 vesicles of xi and xii are in contact transversely over the dorsal blood 

 vessel. Each vesicle has a. rounded, primary ampulla, with a smooth 

 or finely granular surface. The lateral face of the ventral lamina 

 of each vesicle has a convoluted appearance. Wlien the delicate 

 transparent sheath surrounding; the ventral lamina of a vesicle is re- 

 moved, the contents separate into columnar blocks. These blocks are 

 so placed within a vesicle that the long axes are mesiolateral. The 

 prostates extend through some or all of segments xvi-xx. The pro- 

 static duct is 5-8 mm long, usually bent into an elongate, hairpin- 

 shaped loop, the ectal limb of the loop slightly thicker than the 

 ental limb. 



The spermathecal duct is smooth and slender, about as long as or 

 slightly shorter than the ampulla; narrowed gradually in the parietes. 

 The diverticulum is not so long as the combined lengths of duct and 

 ampulla and passes into the anterior face of the duct close to the 

 parietes. The smooth, slender stalk is 2-3 times the length of the 

 seminal chamber, which may or may not be sharply marked off from 

 the stalk. In Kobayashi's specimen the chamber is but slightly shorter 

 than the stalk but V/2 times as thick. In each of several spermathecae 

 there is a single very short loop in the diverticular stalk just ectal to 

 the seminal chamber. 



The glandular masses dorsal to the genital markings appear to be 

 sessile on the parietes. The glands over the circular to oval mark- 

 ings are rather disklike; the postclitellar glands not so flat and more 

 conspicuously protuberant into the coelomic cavity than the preclitellar 

 glands. 



The glandular material of the spermathecal pore markings is 

 usually in the form of a "half -collar" in the parietes on the anterior 

 face of the spermathecal duct. In this collar there can be seen a 

 number of very fine stalks or ducts, which pass onto the anterior face 

 of the spermathecal duct to which they are firmly attached. Occa- 

 sionally and especially anterior to the spermathecae of vi and vii 

 the glandular material is not aggregated into a half -collar but is 

 represented by small bits of softish material between the longitudinal 

 muscle bundles. 



RemarJxS. — The "externally projecting chambers" present on the 

 spermathecal ducts of the type are lacking in all but two of the 

 specimens examined. In one of the exceptional specimens there are 

 vesicular bodies on the duct of each spermatheca. In the second 

 specimen only a few of the spermathecae are so characterized. These 

 saclike or vesicular protuberances are thus not characteristic of the 

 species. Quite possibly the vesicular outgrowths are the result of 

 parasitic activity. 



