EXPLANATION OF PLATE XXVII. 



Fig. 13. — Genital area of Perionyx aborensis, sp. nov. Setae not 

 indicated ; d» , male aperture. 

 ,, 14 — Genital area of Perionyx depressus, sp. nov. Setae of 

 segm. xviii indicated; & , male aperture. 



,, 15. — Genital area of Perionyx foveatus, sp. nov. Setae not 

 indicated ; & , male aperture. 



,, 16. — The same, another specimen; setae indicated. 



,, 17. — Spermatheca of Pheretima lignicola, sp. nov. The ampulla 

 was relatively more elongated in the other sper- 

 mathecae of the same side. 



,, 18. — Segments xxi-xxiii of Eutyphoeus kempi, sp. nov. ; ventral 

 surface, showing depressions in the course of the 

 intersegmental grooves. 



,, 19.— Genital setae of the same ; X ca. 175. 



,, 20. — Genital area of Eutyphoeus koboensis, sp. nov. (diagram- 

 matic), c, clit ilium; g., genital ridges; x., posterior 

 limit of clitellum ; cf , male aperture ; 9 , female 

 aperture. 



,, 21. — Genital seta of the same; X ca. 175. 



,, 22. — Genital setae of Eutyphoeus aborianm sp. nov. a., fully 

 formed; b., still within the sac; X ca. 200. 



,, 23. — Spermatheca of Eutyphoeus magnus, sp. nov. d.y diverti- 

 cula on one side of duct, the others being under- 

 neath ; V. n. c, ventral nerve cord ; x is not the duct, 

 which is hidden from view beneath the ampulla, but 

 a strand attaching ampulla to body-wall. 



,, 24. — Genital seta of the same, a., whole seta, to show its 

 shape, X 25 ; h , distal end, X ca. 150. 



