72 



P. GOTO AM) S. II ATA f. 



Testes in X, XI; sperm reservoirs in XT, XII. Ovisacs one pair, in XIII. 

 Prostate gland large, extending through 5 segments, XVI — XX, lobate. No 

 terminal bulb on the sperm duct. 

 Loc. — Tokyo. 



10. P. ßaveseenSf n. sp. 

 Length 120 mm., breadth 6 mm., number of segments 126. Clitellum 

 XIV — XVI, swollen, without setae. Anal segment comparatively long 

 Number of setae in the spermathecal segments constant, viz. 20 ; these as well 



being 4 pairs in all in this region. Sperm duct pores on top of papillae, sepa- 

 rated by 7 setœ ; 4 pairs of genital papillae in XVIII, two external and two 

 internal; the internal pairs lying inside the male pores, close to the chsetal line, 

 one in front of, and the other behind it; the external pairs are also situated in 

 front and behind, but lie slightly external to the male pores; the papillae 

 around each male pore occupying the four corners of a trapezoid with the paral- 

 lel sides parallel to the long axis of the worm and the shorter side turned 

 inward. 



Intestine begins in XV ; one pair of intestinal cœca in XXV, extending 

 for three segments anteriorly. Thickened septa IV/V — VII/VIII and X/XI 

 — XII/XII I ; septa VIII/IX, IX/X wanting. Spermathecae 3 pairs, in VIT, 

 VIN, IX, with large vesicular portions and short ducts ; only the pair in VIII 

 with minute diverticula. Testes in X, XI; sperm reservoirs in XI, XIL 

 Ovisacs in XIII. Prostate gland large, occupying XVII — XIX, 2-lobed, 



XVIII 



VIII 



VII 



I x 



as the anterior segments with larger but 

 fewer setie than the posterior segments, 

 which are provided with more but small- 

 er setae, there being 40 — 50 in each. 

 First dorsal pore in XIII/XIV. Sperm- 

 athecal pores 3 pairs, in VI/VII, VI- 

 I/VIII, VIII/IX; VII with one pair of 

 genital papillae behind the chaetal line, 

 VIII with two pairs, one in front of, and 

 the other behind, the cluetal line, IX with 

 one pair in front of the ehaetal line ; there 



