181 KOLLIKER, ON VEGETABLE PARASITES. 



Annelida. 



The tubes of two undetermined Serpula, from the coast of 

 Scotland, -were pervaded most abundantly with fungus- 

 filaments, in which, however, neither anastomoses nor 

 sporangia could be perceived. 



8. Cirrhipedia. 



In this division I have found structures which could with 

 certainty be described as fungus-filaments, only in a large 

 Balanus. They occurred both in living and dead shells, were 

 extremely abundant, usually branched, and occasionally con- 

 nected at the extremity with elongated, curved, widish spaces, 

 probably sporangia. In one instance the filaments formed 

 beautiful anastomoses. Besides these fungus- filaments, it 

 would appear, at any rate from Quekett's description (' Histol. 

 Catal./ i, pp. 263—265, PI. XVII, fig. 12), that other tubuli 

 occur in the shells of Balani, which are probably of a typical 

 nature, although from the representations of that author it is 

 not clear whether, among the structures described by him, 

 there might not be some corresponding with those I have 

 noticed above. Moreover in Pol lie' pes, as is also remarked 

 by Quekett, tubuli exist which, from their regular course in 

 distant rows, in all respects resemble a typical structure. In 

 the opercular pieces of Tubicinella, also, I have found tubuli 

 which, from their being unbranched and running parallel to 

 each other, resembled a normal structure. They were placed, 

 however, far closer together than the tubules in Pollicipes, 

 and I am compelled, for the present, to suspend my judgment 

 respecting them. The statement made by me in another 

 place {' Wurtzb. Verh./ Bd. x), that fungi occur also in 

 Diadema, I must retract as erroneous. The mistake arose 

 from the wrong ticketing of the preparation of a gasteropod 

 shell. 



9. Fish. 



As stated above, the observation of parasites in the scales 

 of Beryx ornalus, from the Chalk, was the starting point of the 

 investigation here recorded. The parasites of these scales arc 

 by far the most elegant of any hitherto met with (fig. 9), and 

 correspond essentially with those figured by Mr. Hose. They 

 are unicellular organisms, constituting stars with S, Hi, or ."52 

 rays, at the extremities of which the sporangia appear to be 

 developed, inasmuch as in large individuals the rays arc not 

 infrequently slightly clavate. Although usually there are 



