EXPLANATION OF PIRATE XLVIII. 



Dihangia koboensis, n. sp. 



Fig. I. — Animal from the underside, opened along the sole of the 

 foot and turned back to show the packing of the 

 internal organs, the extruded penis and generative 

 aperture is shown and the approximate position of 

 the retractor muscle penis attachment, X 3*4. 

 ,, la. — Posterior lobe of the liver. . 



,, 2. — Part of the genitalia. The penis extruded close to the 

 right eye-tentacle, showing internally the retractor 

 muscles of both, X 3*4. 



^ — Part nf tVip p-pnit.alia. External : The Denis on the right 



,, 10. — Jaw, X 15. 



KXPLANATION OF LETTERING. 



An. or. amatorial organ; alg. albumen gland; ant. anterior; post, poste- 

 rior ; hd. hermaphrodite duct ; hg. hermaphrodite gland ; br. branchial sac ; 

 i^en. ap. generative aperture ; rmp. retractor muscle penis ; rme. retractor eye 

 tentacle ; et. eye-tentacle ; h. heart ; i. intestine ; ov. oviduct ; f. foot ; k. kid- 

 ney ; 1. liver; p. penis ; sp. spermatheca ; ot. oral tentacle; m. mantle edge or 

 muscle. 



