450 W. A. HASWELL. 
Part II. On Anomalocelus cecus, a new type of 
Rhabdocele. 
The Rhabdocele Turbellarian, of which the following 
is a description, was found among the mud at the bottom of 
dams at Glanmire Hall, near Bathurst, in New South Wales. 
Its eyeless condition is, doubtless, correlated with the fact 
that it was never found on the surface, but always burrowing 
more or less deeply in the mud. Nothing is known of its 
range; it does not occur in any of the other dams in the 
neighbourhood that were examined for it, and has not been 
found elsewhere. 
The largest specimens were about 5 mm. in length when 
alive and fully extended: the breadth under the same con- 
ditions was about one-sixth of the length. The living animal 
is semi-transparent, of a reddish colour, which varies greatly 
in intensity. The region in front of the pharynx is always 
bright red, the colour being usually most intense in an axial 
streak in front of the brain. In young living specimens the 
intestine is clearly distinguishable as a cylindrical, rather 
opaque, band behind the rounded pharynx: in older speci- 
mens this becomes hidden by the reproductive apparatus. 
The vitelline glands appear as a glistening network extending 
over the entire post-pharyngeal region. The mouth is a 
rounded aperture situated anteriorly about an eighth of the 
total length from the anterior extremity. ‘There is a single 
reproductive aperture situated somewhat in front of the 
middle of the ventral surface. 
Integument.—The most important feature of the in- 
tegument is the presence of a system of canals between the 
epidermal cells. The epidermal cells are flat polyhedral 
plates, like those of the majority of Rhabdocceles. They 
vary greatly in size, but are on an average about ‘04 mm. in 
length and ‘012 mm. in thickness. Hach contains a nucleus 
(about ‘005 mm. in diameter), which is very rarely spherical, 
but nearly always lobed or mulberry-like. The cell-proto- 
