110 TEANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



tissue of the massive parts of the ovary, but the fibres are 

 thicker and more convoluted. On the whole they suggest 

 a process of alteration, and a progressive destruction of 

 morphological detail. The epithelium is represented in 

 fig. 1 : it consists of ellipsoidal cells which flatten out 

 towards the free margin very much as those of an 

 epidermal layer; indeed, this epithelium is very like an 

 epidermis, except that the "prickles" between the 

 cells are quite absent. 



It is difficult to resist the notion that we have here 

 the earlier stage of one of the inclusions contained in the 

 cysts. The latter are horny, and have evidently been 

 altered in the direction of the complete obliteration of 

 their finer structure, but the section just described may 

 represent what they were like during their stages of 

 growth . 



The specimen seems, therefore, to be a multilocular 

 cystoma, and it presents many points of resemblance with 

 the papillary cystadenomas described in works on human 

 pathology. Fibrosis of the tissues of the ovary has 

 probably preceded the process of cyst formation. The 

 inclusions in the cysts are probably invaginations of the 

 walls of the latter with original modification of structure. 

 Later on these invaginations become pinched off from the 

 cyst-walls, and their vascular connections become lost. 

 Alteration — some kind of hyaline degeneration — then 

 occurs so as to produce the hard, partially calcified 

 inclusions. 



4. A Plaice with Oxe Eye. 



A small plaice about 10 cms. in length, sent to us in 

 a sample of other fish, attracted instant attention on 

 account of the complete absence of the left eye. The head 

 of the fish is represented in fig. 1 of Plate Y, and it 



