1896.] FEOM XHB SANDWICH ISLANDS. 201 



once open into the lumen of the duct ; they become narrower 

 and somewhat triangular in section, losing at the same time their 

 ciliated lining. In cross-sections the two tubes are seen to lie in 

 close contact with each other and with the lumen of the spermi- 

 ducal-gland duct. Ultimateh', just where the gland-duct perforates 

 the body-wall on its way to tbe exterior, the sperm-ducts open 

 into it. 



Ferichffita molokaiensis, n. sp. 



This is a moderately small species, 81 mm. in length, and con- 

 sisting of 93 segments. 



The ]n-ostomium is small, and is continued by grooves on to first 

 half of first segment. 



The dorsal pores commence on x./xi., and are visible upon the 

 clitellum. 



The clitellum has a few setsB on its last segment, and extends 

 over segments xiv.-xvi. 



There are no genital papillce. 



Tlie mule pores are separated by 15 setse. 



The first septum separates segments iv./v. ; none are specially 

 thiclcened. 



The intestine begins in xv. ; tbe caeca are in xxvi., and are not 

 large. 



The sperm-sacs are large, and are in xi., xii. ; the sperm-reser- 

 voirs (containing the fuiuiels) in x., xi. 



The spermiducal glands extend from xvii.-xxi., and are much 

 lobed. Their duct is long and curved, but has no terminal sac. 



The spevmathecae are four pairs in vi.-ix. The pouch is siiarply 

 marked off from the long duct. Tbe diverticuluui, ending in an 

 oval dilatation, is about as long as the latter. 



Hah. Molokai. 



Memarks.—Aa I have only had a single specimen of this species 

 at my disposal, I have been careful to injure it as little as 

 possible. Hence my description is in places somewhat defective. 

 I believe, however, that this description is sufficient to avoid 

 a confusion with allied forms. It is certainly not far from Pevi- 

 cliceta peregrina of Fletcher ', chiefly in the large size of its spermi- 

 ducal glands. Mr. Fletcher does not say how many of the 

 clitellar segments of P. peregrina have sefae, a matter which is 

 apparently of some importance in the discrimination of species. 



Perichseta hawayana, Eosa. 



The length of the largest example of this species in 150 mm. ; 

 the number of segments of that individual was 97. 

 The colour is brown, with a pure flesh-tinge in parts. 

 The seta-formula is as follows : — 



1 Proc. Linn. Soc. N. S. W, 1886, p. 969. 



