258 ' [March, 
versive of the rule for compouna terms," but for the purpose of showing the necessity 
for caution in the retrospective application of the rule to current names. If Choero- 
potamus is to be changed, Hippopotamus ought to go also ; if Chceropotamus is not 
to be inverted, why should Corimelcena or Derephysia ? 
There is a manifest distinction between the hippos potamios of Herodotus and 
the hippopotarmis of Strabo ; the former was a compendious description of a newly 
discovered animal, fluvial in its habits, and supposed to be a horse ; the latter is 
the name given to the animal when it was found not to be congeneric with the horse, 
and to require a name of its own. 
8. My question as to rlimoceros was asked only in view of the abandonment of 
hippopotarmis being insisted on. Both rhinoceros and ceratorhinus are correct, but 
I think they are not quite " equivalent terms." The name Rhinoceros, " nose-horn," 
was doubtless given to the animal from its " having a nasal horn ;" but Rhinoceros, 
the name of the animal, is a substantive. So Monoceros, "having a single horn," 
is a substantive, when used as the Greek name of the better-known Latin unicorn. 
In diceros Selene, the two-horned moon, diceros is no doubt an adjective ; but as the 
name of a genus of Cetoniidw, Diceros* is a substantive. Mr. Marshall allows that 
" such words, like our names of genera, become substantives conventionally " — it is 
by the same convention which makes Hippopotamus a substantive, or Hippos a 
substantive, which makes a substantive of the name by which we denote any other 
existing thing. 
9. I am glad that attention has been again called to formicceformis, tipulceformis, 
&o. As bearing on this, and the intervening letter o in compounds from the Greek, 
I may mention that when, in the " Accentuated List " before alluded to, Ourapteryx 
was changed into Uropteryx, and formicaeformis into formiciformis, a reverend critic 
indignantly enquired (I forget in which of the then existing serials) upon what 
principle such innovations had been made !— J. W. Dunnikg, 24, Old Buildings, 
Lincoln's Inn, 13t7i. Febriiary, 1869. 
[This paper must form not only " the beginning of the end," but the end 
itself, of this most interesting controversy. May the spirit in which it has been 
conducted by both gentlemen be emulated by all who enter the arena of argument 
on scientific questions ! — Eds.] 
Entomological Society of London; Jcmuary 2tth, 1869. (Anniversary 
Meeting.)— F. Smith, Esq., in the Chair, 
The Hon. T. De Grey, M.P., and Messrs. Pascoe, A. E. Wallace, and Wormald 
were elected into the Council in the room of outgoing Members. The President 
and other officers were elected as before. The Secretary read the report of the 
Council, and also an address by the President (who was unavoidably absent) on 
the progress of Entomology during the past year ; and the Meeting terminated 
with the usual votes of thanks to the Council and Officers. 
Felruary 1st, 1869.— H. W. Bates, Esq., P.Z.S., President, in the Chair. The 
President nominated Messrs. Pascoe, Smith, and A. R. Wallace as his Vice-Presi- 
dents for the ensuing year. 
* Unfortunately Gory and Percheron mis-spelt it Dicheros.—S. W. D. 
