TWO NEW SPECIES OF THE FHOliOXlDEA. 
267 
are frequently seen to contain rows of spherical deeply- 
staining masses, probably oil-globules (Fig. 4, o. g.), such as 
are often seen in the intestinal cells of mammals. They 
appear to collect near the outer borders of the cells and to be 
taken up by the blood-corpusL-les in the surrounding sinus. 
Some blood-corpuscles appear to be crowded with these 
globules, which appear slightly smaller than the nucleus — 
possibly after slight chemical changes this product is deposited 
in the vaso-peritoneal cells as yolk-spherules. 
One specimen contained a few nearly spherical coccidia 
about 50 uL in diameter in some of its intestinal cells ; these 
are the only parasites that I have observed in either of the 
• ^ 
species. 
Vascular System. — The general arrangement of the 
blood-vessels can be made out without liifficulty in the living 
animals, for owing to the red colour of the blood it can easily be 
seen through the transparent body-wall. The two longitu- 
dinal vessels, the lateral or eifei-ent and the median or afferent, 
extend the whole length of the alimentary canal, and at 
intervals only near the })roximal end connect with the peri- 
gastric sinus by the breaking down of the intervening walls 
(Fig. 4). 1 have seen the median vessel very dilated and 
crowded with corpuscles quite close to the bend iu the dig-es- 
tive tube. 
The numerous capillary coeca project freely into the coelom, 
and do not branch as they do in Fh. australis (Benham 
[2], tig. 18) and in Phorouopsis harmeri, to be described 
later. The corpuscles are 8-10 /x iu diameter, and have a 
jiale yellow colour wlieu seen singly. They take up eosin 
easily, and the nucleus and granules stain readily with iron- 
luematoxylin, but 1 have not found them to stain well with 
either Deiafield’s Inematoxyliu or carmine. 
lu some specimens the corpuscles in various stages of 
development may be seen along the ahereut vessels, being- 
developed from the lining epithelium (Fig. 15, h. c.) just as 
shown by Cori (3, pi. xxvii, tigs. 2 and 8). 
A fine granular precipitate is present in some of the 
