2 
The next paper will deal with the New Zealand-Nematodes; it 
has been found suitable to put off the zoogeographical remarks till 
the issuing of that paper. 
Molgolaimus n. g. 
Small Anguillulidæ of a rather clumsy shape. The front end 
is tapering evenly to the head which is rounded and separated 
from the body by an inconspicuous constriction. The cuticle seems 
to be smooth, but possibly it is exceedingly finely striated trans¬ 
versally, a feature which I have not been able to ascertain. No 
setæ have been observed, not even in the front end. No eyes 
or lateral organs. Buccal cavity entirely lacking. As far as can 
be observed, the oesophagus is short and thin almost throughout 
its whole length; its first two thirds are, however, very indis- 
tinct; at its base it forms a conspicuous, globular bulb with a 
rather large cavity in its interior. It was not possible to ascertain 
whether another bulb was present in the middle of the oesophagus 
as might perhaps be expected. The nerve ring was not observed. 
Ventral giand seems to be lacking. The female organs are symme- 
trical, the ovaries reflexed. Vulva is situated somewhat cephalad to 
the middle. Spicules are exceedingly long and thin ; they are fili- 
form and highly flexible. No accessory piece is seen. Supplement- 
ary organ is lacking. Two tiny preanal papillæ were observed. 
Molgolaimus tenuispiculum n. sp. 
PI. I, fig. 13. PI. II, lig. 11. PI. III, lig. n. 
Locality : Auckland Islands. North-arm of Carnley harbour. Clay. 
Length: Female, 0,79 mm. Male, 0,75 mm. 
Female: a — 24,7. ft — 9,o. — 7,6. 
Male: a = 23,5. ft ~ 9,4. y = 9,4, 
Four specimens were captured, three females and one male. 
The shape of the body is rather clumsy. In the first third the 
front-end tapers rather evenly; about at the level of the middle of 
the oesophagus it begins to taper more quickly towards the head 
which is separated from the body by an inconspicuous constriction. 
The tail is conical in its proximal half; its distal half forms a 
digitate prolongation (fig. 2). 
