14 8. GOTO AND 8. HATAI. 



at first; but an examination of a sufficient number of speciemens lias con- 

 vinced us that the character in question is constant and therefore normal to the 

 species. The present species differs from P. acystis in the absence of prostate glands, 

 and the sperm duetti terminating with knob-like meltings in XXII or much forward 

 in XIV. 



Loc. — Uwajima (Shikoku), Takahashi (Prov. Bitchii). 



19. P. Iizukai, n. s p. 

 We take great pleasure in naming this species after our friend, Mr. Akira 

 IiZUKA, to whom wo owe the specimen. 



Length 235 mm. of which 48 mm. is occupied by the first thirteen segments, 

 breadth in I — II, 6 mm., more posteriorly 12 — 15 mm., the portion containing the genital 

 organs being thickest ; number of segments 137. Chœtal lines very salient in the 



anterior part. Setre decreasing towards the anterior 

 segments, there being 34 in IV, 40 in V, 42 in VI, 

 45 in VII, 50 iu VIII, and 60 or so in the more 



XVIII 



xix [• 'q posterior segments. The segments in the middle 



portion of the body arc only 1 mm. long, but in the 



Jä" " " (S) I 



. 1 anterior ones are as long as 5 mm. Clitellum XIV — 



'@ ®\j XVI, without seta?. Spermathecal pores four pairs, 



xx 



XXI 



xxii {. .-) in V/VI, VI/VII, VII/VIII, and VIII/IX, very 



® — I small and difficult to recognize. No genital papilhe 



@ ® J m this region. Male pores in XVIII, separated by 



8 sette, and opening on tops of papillœ. Segments 

 Fig. 1. XIX — XXIII each with a pair of genital papilla? 



about 1 mm. in diameter, lyiDg in the same longitudinal lines with the male pores, 

 and situated behind the chœtal lines (fig. 1). First dorsal pore in XII — XIII. 



Gizzard in VIII and IX ; intestine beginning in XV, without cceca. Thickened 

 septa IV/V— VII/VIII and X/XI— XJI/XIII : septa VIII/- 

 IX and IX/X wanting. Sperm reservoirs in XI and XII, 

 Spermathecse four pairs, in VI, VII, Vili, IX, 8 mm. long ; 

 main sac elongated and pointed at its blind end ; appendage 

 shorter (fig. 2). No ovisac. Ovaries comparatively large. 

 Prostate glands small, lobate, confined to XVIII. 

 Fig. 2. Loc. — Musashi. 



