CO AKT. S. — I. IKEDA : THEEE NEW AND 



Plate II. 



(Figs. 5-17, BonelUa miyajimai.) 



Fig. 5. — Magnified figure showing the two muscular pads (jn.p.) enclosing 

 the roots (Ji.h.) of ventral hooks, together with the ventral vessel 

 {v.v.) and the ventral nerve-cord {v.n.) as seen from inside of the 

 body-wall. A number of radial muscles [r.m.) radiate from the 

 periphery of the pads. 



Fig. 6. — Ventral hooks seen from the external surface of the body. About 



Fig. 7. — One of the primary branches of the anal gland, giving oft' numer- 

 ous secondary branches, each of which ends in a small funnel (/«.). 

 About 40 X. 



Fig. 8. — Part of a paratangential section of the body-wall of the male 

 (near the posterior body end), slicing the epidermis {ep.) and the 

 dermal muscular layers. The epidermis is cut obliquely, so that 

 its one-cell layered structure is made obscure. The small roundish 

 or oval spaces (/.,s.) among the dermal muscular fibres {cm., l.m.) 

 are lacunar spaces which form an anastomosing network continuous 

 with same of the subdermal trabecular layer. About 180 x . 



Fig. 9. — Part of a horizontal section of the body-Avall of the male, passing 

 partly through the ventral nerve-cord (v.n.) and partly just below 

 it where the oblique muscle-layer {o.vi.) is much thickened. 

 About 180 X . 



Fig. 10. — Transverse section through the anterior region of the male, 

 passing through the anterior swollen extremity of the ventral 

 nerve-cord (v.n.). The section also shows the vas deferens (v.d.) 

 and the narrow body-cavity (c), both cut across near their anterior 

 end. About 180 x . 



Fig. 11. — Part of a transverse section througli the body of the male in 

 about the middle of the anterior one-eighth of its length, in 

 which region the vas deferens {v.d.) is somewhat widened and its 

 position slightly raised so as to project into the body-cavity (c). 

 About 180 X . 



Fig. 12. — Highly magnified figure representing a transverse section through 

 the ventral nerve-cord (v.n.) and the vas deferens (v.d.). The 

 latter is here divided into three canals, all which are still con- 



