DESCRIPTIONS OF GENERA AND SPECIES 403 



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

 of spermathecae. 



Bhodopis javanica has a clitellum of the same extent, but the male pores are located between 

 segments xv/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, BOURNE'S P. burlariensis, which appears to 

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

 practically unknown. 



(1) Perichaeta bournei, ROSA. 



P. Bournei, ROSA, Ann. Mus. Civ. Geneva, vol. x (aa), 1 890, p. 1 10. 



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/X1II. 

 Caeca occupying segments XVII-XXV. Septa, IV / 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 two pairs. 

 Spermiducal glands with short duct. Hob. Mount Carin (1,300 m.), Burmah. 



(2) Perichaeta peguana, ROSA. 

 P. Peguana, ROSA, loc. cit., p. 113. 



Definition. Length, 1 70 mm. ; breadth, 6 mm. ; number of segments, 1 20. Clitellum, 

 X1V-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; diverticulum consists of an oval sac in which lies a coiled-up tube. 

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

 with short duct. Hob. Rangoon. 



(3) Perichaeta vordermanni, HORST. 

 P. vordermanni, HORST, 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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