380 Records of the Indian Musetmi. [Vol. XIII, 



3T/viii, 30/ix, 31/xii, 33/xix, and about 50 in the middle of 

 the body. 



The clitellum appeared to extend over segments xiii-xvii = 5, 

 but was most marked in xiv-xvi ; it is light in colour, and the 

 setae and dorsal pores are retained. 



The male area, on xviii, is a whitish patch which takes up the 

 whole length of the segment ; the lateral margins are rather 

 swollen, and its centre is rather more concave than the rest of the 

 ventral surface The apertures are transverse grooves in line 

 with the setae ; the centre of each is about opposite to the setal 

 interval de, the interval between the centres of the grooves being 

 thus equal to -j-5- of the circumference ; the interval between the in-* 

 ner ends of the grooves is equal to the length of one of the grooves. 

 Slight depressions, also transverse in direction, are present in front 

 of and behind the grooves, which thus are bounded by slightly 

 marked anterior and posterior lips. The setae begin on the outer 

 margin of the male area. 



The female aperture is on segment xiv, — a small transverse slit 

 in the mid ventral line, surrounded by a whitish oval patch, the 

 whole of which is included between the line of setae and the ante- 

 rior border of the segment. 



The spermathecaJ pores are situated in furrows 6/7 and y/8, 

 one-sixth of the circumference apart and about in line with seta e. 



Internal anatomy. — Septa 6/7, y/8^ and 8/9 are slightly 

 thickened. 



There is a rudimentary gizzard in segment v, the oesophagus 

 being somewhat swollen and its walls thickened. The oesophagus 

 is also swollen in segments xi,xii, and xiii, where transverse vascu- 

 lar channels are to be seen in its wall ; the interior here is rugose 

 merely. The intestine begins in xix, behind the prostate ; there is 

 no typhlosole in its anterior part. 



The last heart is in segment xii. 



Testes and funnels, the latter included in large masses of iri- 

 descent spermatozoa, are present in segments x and xi ; a mass of 

 coagulum fills up segment x ', very much resembling the seminal 

 vesicles in the two succeeding segments, and differing only in being 

 more easily detachable 



The seminal vesicles, in segments xi and xii, are large, and 

 fill out their respective segments ; they are flocculent masses, with 

 simple outline, which meet in the middle line dorsally but do not 

 fuse there with their fellow of the other side (doubtfully so m the 

 case of the posterior pair). 



The prostates are squarish blocks, confined to segment xviii. 

 The duct is not very stout, and only slightly muscular apparently ; 

 it lies in a hilus of the gland for the most part, where it is curled 



1 I have liule doubt that the seminal vesicles which I stated to be present in 

 segment x in P. depressiis, and said to be more intimately attached to septum g/io 

 than to lo/il (17) are really only masses of coagulum. These masses are mainly 

 composed of spermatozoa, making their way, presumably, from the j^eminal 

 vesicles, where they have been ripening, to the mouths of the funnels. 



