BY J. J. FLETCHER. 615' 



Male pores two, on conspicuous papillaj on xviii, sliglitly dorsad 

 of the second row of setae on each side. Oviduct pores two, in 

 fi'ont and a little ventrad of the first seta on each side ; sperma- 

 thecal pores three pairs, a pair between each two segments 

 from vi-ix, in line with the second seta on each side. Accessory 

 copulatory structures comprise a swollen ventral portion of vi to 

 IX ; a pair of cii"cular swellings on the ventral surface of each of 

 segments x and xi ; and on the anterior margin of xviii and of xix 

 and ventrad of the male pores is what may be a pore on each side. 



The nepridiopores are close to the anterior mai-gins of the 

 segments commencing with the second one, and form two irregu- 

 larly alternating series on each side, one at the level of the fourth, 

 the other at first at that of the third setae, (the first two or three 

 pairs are at the former level, and occasionally, especially in the 

 anterior region, the pores may continue at the same level for 

 several consecutive segments) ; behind the clitellum the inner 

 rows are at the level of the second setae, and are visible only on 

 alternate segments, an arrangement which I am at present unable 

 to reconcile with the presence of consecutive pairs of nephi'idia in 

 this region. 



Dorsal pores after segment v or vi. 



Alimentary canal : the gizzard is in segment v ; each segment 

 from x to XIII contains a pair of calciferous pouches, which lie at 

 the side of and somewhat below the alimentary canal the over- 

 lying portions of which have the lumen dilated ; the large intestine 

 commences in xviii. 



Genitalia : in each of segments xi and xil a pair of racemose 

 vesiculaj seminales (very small in all the specimens dissected) ; 

 segments x and xi, which were partially filled with masses of 

 spermatozoa, contain the two pairs of ciliated rosettes [and 

 probably the true testes, but their identification was not per- 

 fectly satisfactory]; the two prostates are lobulated compressed 

 bodies occupying part of four or five segments, xvii to xx 

 or XXI ; the vasa deferentia join the prostatic ducts, which come 

 ofi" about the middle of the glands, a little way from the latter; 



