44,2 WILLIAM NICOLL. 
seen in the midst of the intestinal contents on account of its 
distinctly yellow colour. 
It is of medium size, 1°5-2°5 mm. long, with a maximum 
breadth of *7-1‘0 mm. Thickness *2 mm, fairly uniform except 
at the ventral sucker, where it reaches *3 mm. Its breadth 
is therefore nearly half its length, so that it is broader than 
most other Atntocreapin®. The shape is oval, slightly 
attenuated anteriorly, considerably flattened dorso-ventrally. 
One example showed a curious deformity. In the posterior 
half of the body on the level of the testis there was a large 
indentation on the right side, an appearance as if a part had 
been bitten out. The specimen was uninjured, and although 
it was alive and moving actively the deformity still remained. 
It may be regarded as a pathological curiosity. 
The smallest mature specimen obtained measured 1:58 mm. 
The largest immature specimen had the same length, and 
many were found without ova just about this size or a trifle 
smaller, so that this probably represents the size at which ova 
begin to appear, and may be taken as the minimum length of 
adult specimens. ‘The smallest immature example measured 
1:23 mm. 
The cuticle is about ‘004 mm. thick and entirely without 
spines. ‘True unicellular cutaneous glands, of the same kind 
as already described in Stephanophiala laureata, are 
present in the anterior part of the body, chiefly laterally. 
They are large, oval cells with distinct nuclei, and with their 
long axis in the length of the body, but they differ in 
appearance from the corresponding cells in St. laureata. 
They present a very distinct outline with pale, scanty, granular 
contents, ‘This may be due to a difference in the condition 
of the cells or possibly to a slight difference in staining. 
The subcutaneous muscular system is as usual. The 
circular fibres measure ‘0005 mm. and are separated by 
spaces of (004 mm. The longitudinal fibres measure ‘0007 
and are separated by 0135 mm. ‘The diagonal fibres measure 
‘001 mm. with spaces of *045-055 mm. ‘The muscles 
throughout the rest of the body are well developed, especially 
