636 MB. F. E. BEDDARD ON THE [May 22, 



spermatheeaB in vi.-viii., instead of vii.-ix. as described by Horst, 

 Eosa, and Michaelsen. The latter has now solved the difficulty by 

 finding that in some specimens, which he distinguishes as a variety 

 lenzi, the spermatheeae have that position. Moreover these worms 

 are smaller than the type, 90-145 mm., and have rather fewer setae. 

 The gizzard-septa are entirely absent, and the sperm-sacs have a 

 small " Anhangsblase " such as occurs in many worms, but (as is 

 also sometimes the case elsewhere) sunk into the proper sperm- 

 sac. The example studied by myself belongs to this variety, and 

 has the spermathecal pores between v./vi.-vii./viii. It is smallish, 

 and has a bent instead of a straight duct to the spermiducal glands. 

 I observed the same accessory lobe to the sperm-sacs that Michael- 

 sen refers to. 



64. Amyntas ijimse Eosa. 



Pericheeta ijimce, Eosa, Ann. k.-k. Hofm. Wien, vi. p. 402. 



Perichceta kamakurensis, Goto & Hatai, Ann. Zool. Japon. ii. 

 p. 68. 



Perichceta parvula, iid. ibid. p. 68. 



Perichceta clecimpapillata, iid. ibid. p. 71. 



110-150 mm., 115 segments. 60 setae on viii. Papillae paired 

 on vi.-viii. and on xvii.-xix., as many as two pairs to each segment. 

 Spermiducal gland extensive, in xv.-xx. ; sometimes absent. 

 Spermatheeae with minute diverticula or without any. 



Hah. Japan. 



I unite the three species described as separate by Messrs. Goto 

 & Hatai with Dr. Eosa's Perichceta ijimce on account of the missing 

 or small spermathecal diverticula. Eosa's species only differs iu 

 the greater number of setae in the spermathecal region ^60 as 

 against 36) and in the absence of papillae. But these latter are so 

 inconstant that the fact is not necessarily fatal to the collocation of 

 these forms. P. parvula is very minute, only 32 mm., with 48 

 segments, and has no genital papilla or spermiducal gland. To 

 this form it may be necessary to assign a separate specific name. 

 But I do not do this for the present. It has no diverticula, while 

 decimpapillata has " very small diverticula." 



65. Amyntas acrophilus Eosa. 



Perichceta acrophila, Eosa, Ann. Mus. Civ. Genova, (2) xvi. 

 p. 527. 



73 mm., 110 segments. Setae closer ventrally, 30 on vii., 40 on 

 xxv. 14 setae between male pores. Septum viii./ix. feeble Sper- 

 miducal glands occupying five segments, with short duct. Diver- 

 ticulum of spermatheca zigzag, longer than pouch. 



Hah. Sumatra. 



66. Amyntas brevis Eosa. 



Perichceta brevis, Eosa, Ann. Nat. Hist. (7) ii. p. 283. 

 : 20 mm., 80 segments. Setae 50 on xxv. 14 setae between male 



