Gr. H. Dreav 
57 
These are strongly suggestive of the ‘vegetative nuclei’ described by 
Stempell (8) as occurring in Nosema anomalum (Monz). Unfortunately 
all the cysts examined were very nearly in the same stage of develop¬ 
ment, and so it was impossible to trace the history of these nuclei. 
This spoi-ozoon appeal's to be a previously undescribed species of 
Glugea. Adopting Minchin’s (7) classification, its systematic position 
would be 
Order 
Myxosporidia (Biitschli) 
Suborder 
Cryptocystes (Gurley) 
Family 
Glugeidae (Thelohan) 
Section 
Polysporogenea (Doflein) 
Genus 
Glugea (Thelohan) 
Species 
Shiplei (spec, nov.) 
Two cases of abdominal tumours occurring in 
Pleuronectes plcitessa. 
Both the fish in which this condition was found were of large size, 
one measuring 63 centimetres, and the other 40 centimetres, in length. 
The larger of these was a female: the anterior half of the fish, with the 
viscera in situ, was preserved in dilute formalin in sea water. Of the 
smaller fish, only the liver and intestine, with the tumour attached, were 
sent to me, and no note as to the sex of the fish had been made. The 
condition in each appeared to be identical, both macro- and micro¬ 
scopically, so that only one case will be described in detail. 
In the large female fish, there was an oval tumour in the body 
cavity, it was a soft red mass, the size of a hen’s egg, situated posterior 
to the liver, and below the intestine, which it had displaced upwards. A 
thin transparent capsule was present, apparently formed of peritoneum, 
and the tumour was attached to the posterior surface of the liver by a 
thin pedicle consisting of the capsule alone. The growth was easily 
cut open, and was then seen to be homogeneous in character, but very 
soft and friable. 
Small portions from various regions were embedded in paraffin and 
sectionised. The sections (fig. 4) showed glandular tissue consisting of 
cells of a columnar epithelial type. They were rather irregularly 
arranged, but circular acini could be distinguished. In many cases the 
lumina of the acini were partially filled with cells of an epithelial type, 
which had probably arisen by proliferation of the glandular cells forming 
the walls of the acini. Little fibrous interstitial tissue was present, but 
