438 OLIGOCHAETA 



a dorsal median gap. Gizzard feebly developed in VI; a dilatation in XIII, which is 

 probably a calciferous gland. Spermathecae in VIII, IX, each with a small stalked 

 pyriform appendix. Spermiducal gland limited to segment XVIII. No penial setae. 

 Hal. Java; Sumatra. 



HORST remarks about this species that it is possible to distinguish the nephridia 

 lying anterior to the eighteenth segment by the fact that the excretory tube is more 

 highly developed than in the rest of the body. I have had a specimen of either 

 this or the last (my notes are imperfect) from Durban. 



(5) Perionyx macintosh!!, BEDDARD. 



P. M'Intoshii, BEDDARD, Ann. Mag. Nat. Hist., Oct. 1883, p. 217. 



Definition. Length, 249 mm.; diameter, 9 mm.; number of segments, 261. Clitellum, 

 XIII-XIX. Dorsal pores commence V/VI. Male pores upon an oval depression 3 mm. 

 wide, behind setae which are but little modified. Gizzard in VI ; intestine begins in 

 XIX. Last hearts in XIII. Sperm-sacs in XXII. Spermathecae without diverticulum, 

 two pairs. Hob. India ; Burmah. 



The first individual of this species that I examined was immature ; hence there 

 is a possibility that it is not really the same as some specimens (57) from either 

 Seebpore or Darjiling (unfortunately I have mislaid my notes relative to the locality); 

 in the meantime its large size is a feature which characterises both and distinguishes 

 them from any other form. The mature examples are fuiiher to be differentiated by 

 the extensive clitellum. 



(6) Perionyx arboricola, ROSA. 

 P. arboricola, ROSA, Ann. Mus. Civ. Geneva (aa), x, 1890, p. 119. 



Definition. Length, 70 mm.; diameter, 5 mm.; number of segments, no. Clitellum, 

 XIV-XV1. Setae, 56-60 per segment, much closer ventrally. Dorsal pores commence 

 V/VI. Gizzard small in V. Spermathecae in VI, VII, VIII, IX, with a tubular 

 diverticulum. Spermiducal glands enormous, occupying nine segments. Hab. Burmah. 



(7) Perionyx sansibaricus, MICHAELSEN. 

 P. sansibaricus, MICHAELSEN, JB. Hamb. wiss. Anst., ix, 1892, p. 4. 



Definition. Length, 63 mm.; diameter, 3 mm.; number of segments, 108. Clitellum, 

 XIII-XVII. Setae, 40 per segment in front of clitellum, 50 behind. Dorsal pores 



