1896.] FROM THE 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. Ultimately, just where the gland-duct perforates 
the body-wall on its way to the exterior, the sperm-ducts open 
into it. 
Pericheta molokaiensis, n. sp. 
This is a moderately small species, 81 mm. in length, and con- 
sisting of 93 segments. 
The prostomium 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 setz on its last segment, and extends 
over segments Xiv.—xvi. 
There are no genital papille. 
The male pores are separated by 15 sete. 
The first septum separates segments iv./v.; none are specially 
thickened. 
The intestine begins in xv.; the ceca are in xxvi., and are not 
large. 
The sperm-sacs are large, and are in xi., xii.; the sperm-reser- 
voirs (containing the funnels) 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 spermathece are four pairs in vi—ix. The pouch is sharply 
marked off from the long duct. The diverticulum, ending in an 
oval dilatation, is about as long as the latter. 
Hab. Molokai. 
Remarks.— As 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 Peri- 
cheta 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 sete, a matter which is 
apparently of some importance in the discrimination of species. 
Pericheta hawayana, Rosa. 
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 Me XII. XV AZ XXI. 
16 26 43 45 50 
1 Proce. Linn. Soc. N. 8. W. 1886, p. 969. 
