20 



S. GOTO ANO S. IIATÀI. 



Fig. 11. 



the absence of papilla?. Prostate glands 

 Loc. — Takahashi (Prov. Bitchü). 



group of 2-8 glands close to the 

 opening of each spermatheca ; a third 

 gr.mp of 9 pairs on either side of 

 the ventral cord between the male 

 pores ; and a fourth group of 8-9 

 glands close to each male pore (fig. 

 11.) The openings of the glands 

 associated with the spermathecal and 

 male poresj are very difficult to re- 

 cognize from the outside, owing to 

 developed, lobate, in XVII — XX. 



26. P. levis, n. sp. 



Length 85 mm., breadth 4.5 mm. ; number of segments 88. In alcoholic 

 specimens dark brown on the dorsal side, whitish on the ventral side. Number of 

 setœ in the spermathecal region 45, posterior to the clitellum 48. Clitellum pale 

 yellowish, XIV — XVI, without sefce Spermathecal pores two pairs, in VI/ VII, 

 VII/VIII, surrounded by small papillae, the openings of glands, which, however, are 

 often absent. Male pores difficult to recognize with the naked eye. No genital 

 papillae either near the spermathecal or male pares. First dorsal pore in XIl/XIII. 



Gizzard in Vili, IX ; intestine beginning in XV, with 5 pairs of cœea decreasing 

 in length towards the ventrum in XXVII, the longest of which reach segment XXV. 

 Thickened septa V/VI— VI/VII and X/XI— XII/X1II ; septa VIII/IX, IX/X 



wanting. Spermathecœ two pairs, in VII, VIII ; main 

 \ sac pyriform ; diverticulum consisting, like the main sac, 

 of a thin- walled sac-like portion and a thick-walled duct. 

 Two whitish " capsulogenaus glands " close to each sperma- 

 thecal opening, similar in shape to those of P. Hilgendorfi 

 Mich. (fig. 12). Sperm reservoir in XI, XII. Ovary 

 and ovisac very large, lying close to the ventral wall. No 

 prostate gland. Male ducts terminating, as in the allied 

 species, with a knob-like swelling more frequently in a 

 segment anterior or posterior to XVIII and only very rarely in the latter. 



