76 Mv. G. Lewis on 



glaronensis, on account of the number of its vertebrae (10/13 

 according to Dr. Wettstein *), should be classed among the 

 Carangidge, whilst all the living forms having more than 

 10/14 vertebrge ought to be put with the Scombridge. The 

 other characters of E. glaronensis do not decide in which of 

 these two families it ought to be placed. 



2. A careful comparison of the proportions of all the parts 

 of the skeleton of the fossil Echeneis with those of the living 

 forms, such as E. naucrates or E. remora^ shows that the 

 fossil differs nearly equally from both and that it was a more 

 normally shaped fish than either of these forms. The head 

 was narrower and less flattened, the preoperculum wider, the 

 two jaws had nearly the same length. The ribs, as also the 

 neural and haemal spines, were longer, the tail more forked, 

 and the soft dorsal fin much longer. In fact it was a more 

 compressed type, probably a far better swimmer than its 

 living congeners, as might be expected if the smallness of 

 the adhesive disk is taken into account. 



XI. — On the Family Rhysodidse. 

 By George Lewis, F.L.S. 



The primary object of this paper is to record the species at 

 present known from Japan ; but as I found it impossible to 

 work out the Japanese species without investigating the 

 general literature of the group, and finding then that most of 

 the species described are subsequent to the publication of the 

 ' Munich Catalogue,' I have thought it well to give as an 

 appendix a list of all the species known to date. I have 

 also described a new species from the Caucasus, and suggested 

 a new genus, Epiglymmius^ to receive Rhysodes sulcatus^ Fab., 

 and a similar species from Japan, on the characters given 

 below. 



The Japanese species are : — 



Epiglymmius comes. Khysodes rostratus. 



llhysodes crassiusculus. niponensis. 



sulcicollis. Clinidium veneficum. 



Dr. L. von Heyden has not included any species of this 

 family in his ' Catalogue of Siberian Coleoptera,' so it may 



* Dr. Wettstein, loc. cit. p. 83. 



