ART. 4. — EKITABO NOMÜBA 



chl 



spth 



sp.d- 



ov.d. 



p.n. 



tt 



KJ 



ii 



m 



IV 



VI 



vn 



VIII 



IX 



XI 



XIV 



xv 



XVI 



1-2 in the posterior. Five pairs of 

 septal sacs (ssj attached to the posterior 

 faces of septa V/VI-IX/X, on the ventral 

 side of the intestine. Pharyngeal glands 

 very weakly developed. Pharynx in seg- 

 ment 1> II and III. (Esophagus in segment 

 IV. Intestine and chloragogues com- 

 mence in segment V. The nephridia 

 (a.n. 12 ) of segments VII and VIII are 

 racemose in appearance. Prostata rather 

 roundish, entirely surrounding the atrium. 

 Chitinons penis sheath 10-11 times as 

 long as its diameter at the proximal 

 end ; circular in cross section all through. 

 Anterior sperm-sacs (a.s.) in segment IX, 

 paired. Posterior sperm-sac (p.s.) in 

 segments XI-? XVII, unpaired. Sperma - 

 thecse (spth) in segment X, paired ; no 

 spermatophores have been observed. 

 Body length 70-100 mm. according to 

 seasons. Number of segments 100-150. 

 Hab. — Morioka ; Tokyo ; Kagoshima ; 

 Colombo, Ceylon. 



2. Anatomy and Histology. 



xn For the purposes of this section 6 



Japanese and 20 Indian specimens were 



XIII 



Fig. 1. 



L. goioi. Diagram stowing the principal organs. Behind 

 segment V the intestine is omitted, a.n.1.2 — anterior ne- 

 phridia, a.s — anterior sperm-sac, br — brain, chl — chloragogues, 

 H — heart, oes — oesophagus, te — testis, ov— ovary, ov.d — oviduct, 

 ov.s — ovisac, phr — pharynx, p.n.i o — posterior nephridia, pr.g — 

 prostomial ganglion, p.s — posterior speim-sac, sp.d — sperm-duct, 

 spth — spermatheca, ssi_5 — septal sacs. 



