NEW OR IMPERFECTLY KNOWN SPECIES OF EARTHWORMS. 



75 



dually become shorter, Thickened septa V/VI— VII/VIII and X/XI— 

 XV/XVI. Spermathecse 6 pairs, three in VII and three in VIII, without 

 diverticula. Testes in X, XI ; sperm reservoirs in XI, XII, very small, only the 

 dorsal edges projecting on either side of the intestine. Ovaries as well as ovisacs 

 comparatively large, in XIII. The two vasa eflêrentia unite in XII ; the vas 

 deferens can be traced sometimes as far back as XVIII or more backwards, the 

 extremity being usually club-shaped. Last heart in XIII. 

 Loc. — Tokyo, Kamakura. 



Among the numerous specimens of this species that have come under our ob- 

 servation two presented the following points of variation : (1) first dorsal pore 

 in XII/XIII, (2) spermathecse only in VIII, and the pores neither on top of 

 papilke nor in the segment but in the intersegmental line between VII and VIII. 



XVIII 



XIX 



14. P. grossa, n. ?p. 

 Length 240 mm., breadth 8 mm., number of segments 141. Near the two 

 ends of the body the ductal lines are more prominent and the intersegmental lines 



more distinct. Clitellum XIV — XVI, with- 

 "V out setse. Number of setse in the spennatile- 

 *® 0***1 cal segments 53-57, in the more posterior 

 \ segments 60-70. First dorsal pore in XIII/- 

 ® Q ~J XIV. Spermathecal pores 4 pairs, in V/VI- 



A VIII/IX ; no genital papillse around them. 

 © ® J Sperm duct pores on top of papillse, separat- 



I cd by 9 setse ; XIX, XX, XXI each with a 

 pair of genital papillse behind the ehsetal 

 line. 



Intestine begins in XV ; one pair of intestinal cœca in NN VI, very long, 

 extending for 6 segments anteriorly. Thickened septa V/VI — VII/VIII and 

 X/XI— XIV/XV; septa VIII/IX, IX/X wanting. Spermathecse 4 pairs, in 

 VI, VII, Vili, IX, with tubular, convoluted diverticula longer than the pouches. 

 Testes in X, XI ; sperm reservoirs in XI, Nil ; both testes and the reservoirs 

 large. Ovary large ; no ovisac. Prostate gland lobate, in XV — XIX. Last 

 heart in XIII. 



Loc. — Kawaguchi (Prov. Kai). 



XXI 



<D ® 



