In my paper on Crocodilia in the July Number of the Geological Magazine, pp. 310–311, I expressed my opinion that the characters given by M. Dollo in his description of the Belgian Bernissartia did not appear to me to afford grounds by which that form could be distinguished from Hylæochampsa, and I accordingly observed in a note that the onus of proving the distinctness of the former rested with its describer. In a note published on pp. 394–396 of the September Number of the Magazine, M. Dollo replies to this criticism, and shows conclusively that the Belgian form is entitled to specific, and very probably to generic distinction from the larger English one.