392 Records of the Indian Museum. [Vol, VIII, 



in viii ; also bulged in xiv, and more slightly in xv, xvi and xvii ; 

 folds project into the cavity as longitudinally placed lamellae in 

 xiv, and similar folds are present in xv, as well as, though less 

 abundantly, in xvi and xvii. The intestine has neither caeca nor 

 typhlosole. 



The last heart is in segment xii. 



The nephridial system is meganephric. The tubes pierce the 

 body-wall at varying distances from the mid-ventral line ; since 

 all intermediate positions are found between the extremes, the 

 organs cannot be arranged in two series, as for example in 

 P. sansibaricus. The tubes present no terminal vesicle. 



The testes and funnels, in x and xi, are both fairly large 

 organs, free in the coelomic cavity. The vesiculae seminales are 

 contained in x, xi and xii, those in x and xi being attached 

 respectively to the anterior and posterior faces of septum It, 

 that in xii to the posterior face of \\; each is a single mass, 

 continuous from side to side dorsally over the alimentary canal 

 The prostates, in xviii, are solid-looking, somewhat rectangulai 

 masses, not cut up into lobes, with a stout straight duct coming 

 off from the middle of the inner face. 



The ovaries and their funnels have the usual situation ; the 

 ovaries are large, the funnels comparatively small structures. 



The spermathecae lie in segments viii and ix, and open to 

 the exterior in furrows I and ■ , near the middle line. They are 

 oval in shape, with a broad duct, as long as and nearly as broad 

 as the ampulla itself, and not marked off from the ampulla ; 

 there are no diverticula. 



The penial setae (fig. 12) are present in a group of four or 

 more at each male aperture. They measure up to 880 /^ in 

 length, and 22 p in thickness ; they have a slight sabre curve, 

 and end distally in a point. The distal fourth of the shaft is 

 ornamented by about 20 rings of extremely line teeth. 



Pcrionyx aborensis, sp. nov. 

 (PI. xxvii, fig. 13.) 



Renging, in rotten wood ; 19-xii-igii. Two specimens. 



Length 3 inches ; diameter 4 mm. Colour, dorsally brown 

 with a purplish tinge, ventrally light brown. There is a slight 

 mid-dorsal groove from the prostomium to the clitellum ; the 

 ventral surface is flattened, with a shallow mid- ventral groove for 

 the greater part of its extent. Segments 125. 



Prostomium epilobous §. 



Dorsal pores begin from furrow {■ ; they are present on the 

 clitellum. 



The setae are rather larger in the anterior part of the body ; 

 behind segment xvii they are very small ; they are largest in 

 segment viii and the few segments immediately in front of and 



