DESCRIPTIONS OF GENERA AND SPECIES 427 



66. Spermathecae two pairs in VII, Fill, with slender diverticulum half the length 

 of pouch. Spermiducal glands extending through segments XVII-XIX. Hab. Japan. 



This species has been rather imperfectly described by HORST ; it does not, however, 

 seem to be identical with any other form described from Japan. The nearest is, 

 perhaps, P. tokioensis. The main difference between the species appears to be the 

 J -shaped ridge in the present worm. 



(59) Perichaeta indica, HORST. 



Megascolex indicus, R. HORST, Notes Leyd. Mus., v, 1883, p. 186. 



P. indica, BEDDARD, P. Z. S., 1886, p. 298. 



P. heterochaeta, MICHAELSEN, Abh. nat. Ver. Hamb., xi, Heft 2, p. i. 



Megascolex diffringens, VAILLANT, Bull. Soc. Philom. Paris, 1870, p. 385. 



P. diffringens, VAILLANT, Annelds, p. 73. 



Definition. Length, 150 mm.; number of segments, 100. Clitellum, XIV XVI, without 

 setae. Setae, 42-48 per segment, those on ventral side in anlefior segments being 

 much larger than the others. Dorsal pores commence XII/XIH. Genital papillae on 

 VI, VII, VIII, near to orifices of spermathecae. Spermathecae, four pairs in VI-IX, 

 with tubular diverticulum. Spermiducal glands. Hab. India ; Java ; Sumatra ; South 

 America ; Azores ; New Caledonia ; Europe. 



This species is one of the commonest of the genus. It frequently occurs in hot- 

 houses in Europe, having been there met with in Scotland by SERVICE, and by 

 MICHAELSEN in Berlin. The living worm is of a fine rich brown colour, with 

 a distinct white line at the implantation of the setae. I have given a figure of the 

 living worm (56, PI. iv, fig. i). The spermatheca has been figured by HORST, who has 

 indicated the occasional presence of a branch of the spermathecal diverticulum. The 

 species was first of all described by HORST (20) without a name ; in this paper all 

 the important structural characters are illustrated. 



It is very possible that VAILLANT'S 'P. diffringens,' which he describes as of 

 a brown colour and with four pairs of spermathecae, is this species. 



(60) Perichaeta vitiensis, BEDDARD. 

 P. vitiensis, BEDDARD, Ann. Mag. Nat. Hist., Feb. 1892, p. 131. 



Definition. Length, 75 mm. ; number of segments, 70. Clitellum, XIV-XVI, icdhout setae. 

 Male pores separated by about six setae. Dorsal pores commence XI/XII. Behind the 

 gizzard four thickened septa. Spermathecae in VIII, with one diver! icu/io//. Funnels 



312 



