638 MR. F. E. BEDDARD ON THE [May 22, 



71. Amyntas supuensis Mich. 



Perichasia supuensis, Michaelsen. Abh. Senck. nat. Ges. xxiii. 

 p. 225. 



115 mm., 145 segments. Setae very numerous and small, 132 

 on vi., 154 on vii., 106 on xxvi. Papillae on xviii., xix., several 

 pairs, and on viii., ix., one pair each. Sperniiducal gland not 

 large, embracing a thick short duct. 



Hab. Halmahera, Supu. 



Here again, as in A. hahnaherce, the generative orifices are 

 closely approximated to each other. 



K. Spermathecae 2 pairs in vi., vii. 



72. Amyntas biserialis Pemer. 



Perichata biserialis, Perrier, Comptes E-end. lxxxi. p. 1044; 

 Beddard, P. Z. S. 1890, p. 63. 



PericJiceta biserialis, Michaelsen, Abh. Senck. nat. Ges. xxiii. 

 p. 226 ; Horst, Notes Leyd. Mus. xx. p. 201 ; Beddard & Fedarb, 

 P. Z. S. 1899, p. 803. 



Perichceta aci/slis, Beddard, Monograph Oligochaeta, p. 423. 



Megascolex biserialis, Vaillant, Annelcs, 1889, p. 76. 



135 mm., 167-220 segments. Setae on each side of ventral 

 line much enlarged ; those of anterior segments also enlarged ; 81 

 on v., 90 on x., 70 on xxvi. 14 setae between male pores. Papillae 

 paired on xix.-xxv. (maximum number). No caeca. Sperm- 

 sacs in xi-xiii. Spermiducal glands in xvi.-xix., with curved duet. 

 Spermathecae paired, 3-6 in each segment, often asymmetrical, 

 sometimes entirely absent. 



Hab. Philippines, Madagascar, Guiana. 



There can be no doubt as to the identity of the two species 

 included in the present. The number of setae on the segments 

 varies considerably. The numbers given above are those of 

 Michaelsen. The prevalent number of papillae is 3 to 5 pairs. 

 Perrier found 7, a number which has not been found by other 

 observers. Out of the 33 examples of the species which have 

 been studied, 12 had no spermathecae. Generally there are no 

 setae upon the clitellum ; but in one individual at any rate there 

 were a pair upon segment xvi. 



73. Amyntas hasselti Horst. 



Megascolex hasselti, Horst, Notes Leyd. Mus. v. p. 190. 



Perichata hasseltii, id. Vermes in ' Midden-Sumatra,' p. 5. 



70 mm., 100 segments. Setae 70-75, those of ventral surface 

 crowded together. Spermiducal glands much divided, with short 

 straight duct. Spermathecae with diverticulum half the length of 

 pouch. 



Hab, Lebong. 



