94 Dr. R. Kossman on the Hntomieeites 
ganglia. The preparation of longitudinal sections which 
would show them is very difficult, in consequence of the 
curved form in which the animal dies. . 
I come now to the ovaries, about which the most erroneous 
opinions have been put forth. What Fritz Miiller says about 
them, namely that they occupy the dorsal surface, is very 
little, especially as, in point of fact, they also penetrate to the 
ventral surface, and, indeed, so far that they meet there in some 
places. 
Fraisse has unfortunately fallen into an unlucky mistake 
with regard to this organ; he has taken the adipose body for 
the ovary. This tissue has given rise to unspeakable con- 
fusion in the literature of the parasitic Isopoda: Rathke took 
it for an upper division of the liver; and in Gyge Cornalia 
and Panceri regarded it as salivary glands. In all these cases 
it is evident that the glandular aspect of the tissue is to blame 
for the mistakes; and especially the error of taking it for the 
ovary is easily explained by the enormous size which some of 
its cells attain, as I have already stated with regard to the 
Bopyridee (“‘ Studien tiber Bopyriden,” II.). What Fraisse has 
regarded as the clear germinal vesicles, and figured in his 
pl. xxi. fig. 14, are the fat-drops which gradually collect in 
the protoplasm, but not around the nucleus. This nucleus is 
very large, especially before the accumulation of fat, and 
contains numerous nucleoles; the contents of the younger 
cells is strongly granular, and, as Fraisse has correctly ob- 
served, become more intensely coloured or appear of a darker 
colour than the older, less granular and therefore more trans- 
lucent cells. It is certainly very probable that in very young 
animals the connexion of this fatty body with the interstitial 
connective tissue is as distinct as I have found it to be in the 
Bopyride ; but in the Entoniscide sectionized by me the 
demarcation had already become very decided, by which the 
error of supposing that we have to do with a distinct organ is 
rendered all the more intelligible. However, there is nothing 
to be found in it of a special envelope. As my figures * show, 
the fatty body lies chiefly towards the back. It is only about 
‘the esophagus and the commencement of the middle intestine 
that it becomes more extensive and pushes its way to the 
ventral surface ; and this seems to explain Fraisse’s figures 3, 
4, and 5, which, however, do not, as he supposes, represent 
transverse sections, but somewhat oblique longitudinal sections. 
In general the fatty body follows the course of the aorta, often 
separating into several groups, which may then unite some- 
* [This refers to coloured figures of successive transverse sections which 
we have not reproduced.—Eps. Ann. Nat. Hist. | 
