BY J. J. FLETCHER, M.A., B.SC. 963 



Setae about -46 mm. long, with an enlargement at ^ from the 

 free end ; forming complete circles, arranged on transverse ridges 

 in the middle of each segment except the first one, and the last 

 few. The number of setce is tolerably constant throughout 

 and is about 60 per segment ; in small specimens a few less. 

 Male pores two, on papillae on xviii in the line of setae, from 

 4 to 5 mm. apart, with 13 or 14 setae on the ventral portion of the 

 segment between the pores. The oviducts open on the exterior by 

 two apertures close together, situated on a depression on xiv just 

 in front of the line of setae. There are four pairs of spermathecal 

 apertures, rather ventral in position, a pair between segments V 

 and vi, vi and vn, vn and viii, vin and ix ; the pores in a line 

 with about the sixth row of setae on each side. Dorsal pores after 

 about xn. 



The accessory copulatory organs in this species are very Avell and 



characteristically developed. Firstly on the ventral surface of each 



of segments ix, x, and xi (in one case only on x and xi), and in front 



of the setigerous ridge is a pair of elliptical or circular swollen 



areas presumably adhesive discs, those of each pair rather close 



together, and each with a small central pit perhaps carrying a pore. 



Secondly there are six or seven pairs of accessory-gland pores of 



which two pairs are in front of the male pores, and four or five 



pairs behind them, and arranged as follows : — On xvn just in front 



of the line of setae is a pair of conspicuous slit-like pores a little 



closer together than the male pores ; the second pair are situated on 



the junction of xvn and xviii, just behind the first pair, but a little 



further apart ; the third pair are almost on the junction of xviii 



and xix, the pores of this and of the second pair as far apart as the 



male pores ; the fourth fifth and sixth pairs are on the anterior annuli 



of segments xix xx and xxi respectively; when there is a seventh 



they are on xxn. The last three pairs are closer together even 



than the first pair ; thus while in a good example the pores of the 



first pair were 2 mm. apart, those of the last two pairs were only 



1 mm. apart. In none of the specimens were these pores situated 



on papillae (genital or copulatory papillae), though in the breeding 



season these are probably developed ; but they were placed mostlv 

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