DESCRIPTIONS OF GENERA AND SPECIES 



403 



Amyntas aerugimsus again is stated to have a clitellum with only two segments; it has two pairs 

 of spermatheoae. 



Ehodopis javanica has a clitellum of the same extent, hut the male pores are located between 

 segments xr/xvi ; without further evidence I cannot accept this as probable. The restricted clitellum 

 is the principal reason for regarding this worm as in all probability a Perichaeta. 



For the present we must also regard as incertae sedis, Bouene's P. hurlariensis, which appears to 

 be a true Perichaeta, though without intestinal caeca. Megascolex sanctae-helenae of Baikd is 

 practically unknown. 



(i) Perichaeta bournei, Rosa. 



p. Bournei, Rosa, Ann. Mus. Civ. Geneva, vol. x (aa), 1890, p. no. 



Definition. Length, 150 mm.; breadth, 5 mm.; number of segments, 130. Clitellum, 

 XIV-XVI. Male pores on line of seta 15 ; inside of each two small papillae, one in front 

 of the other. Setae, 60 per segment, closer ventrally. Dorsal pores commence XII/XIII. 

 Caeca occupying segments XVII-XXV. Septa, TV/ VIII, X/XIII thickened. Hearts in 

 X-XIII. Spermathecae in VI-VIII ; at aperture of each is a papilla ; diverticulum as long 

 as pouch, terminating in an oval dilatation. Sperm-sacs and sperm-reservoirs ttoo pairs. 

 Spermidueal glands with short duct. Hab. — Mount Carin (1,300 m.), Burmah. 



(a) Perichaeta peguana, Rosa. 



p. Peguana, Rosa, loc. cit., p. 113. 



Definition. Length, 170 mm.; breadth, 6 mm.; number of segments, lao. Clitellum, 

 XIV-XVI. Male pores on line with seta 10 ; on intersegmental grooves XVII/XVIII, 

 XVIII/XIX, a pair of papillae a little to inside of male pores. Setae, 56 in anterior 

 segments, closer ventrally. Dorsal pores commence XII/XIII. Gizzard in, IX; intestine 

 commences in middle of XIV, caeca in XXVI (XXIV). Septa IX/XI missing; septum 

 XI/XII thickened. Hearts in X-XIII. Spermathecae in VII-IX, opening in line 

 of seta 12 y diverticulum consists of an oval sac in which lies a coiled-up tube. 

 Sperm-reservoirs of each side communicate. Spermidueal glands occupy three segments, 

 with short duct. Hab. — Rangoon. 



' (3) Perichaeta vordermanni, Hoest. 



p. vordermanni, Hoest, Notes, Leyd. Mus., vol. xii, 1890, p. 231. 



Definition. Length, 315 mm.; number of segments, 175. Clitellum, XIV-XVI, without 

 setae. Male pores on a glandular area, extending over segments XVII-XIX, and 

 bearing several papillae ; on XVII and XIX a pair of papillae in line of setae, cor- 



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