There are similar difficulties with regard to the names of subordinate portions of zoological classification; thus the Ferines are divided by Cuvier into _Cheiroptéres_, _Insectivores_, _Carnivores_; and these latter into _Plantigrades_, _Digitigrades_, _Amphibies_, _Marsupiaux_. There is not any great harshness in naturalizing these substantives as _Chiropters_, _Insectivores_, _Carnivores_, _Plantigrades_, _Digitigrades_, _Amphibians_, and _Marsupials_. These words _Carnivores_ and _Insectivores_ are better, because of more familiar origin, than Greek terms; otherwise we might, if necessary, speak of _Zoophagans_ and _Entomophagans_. It is only with certain familiar adjectival terminations, as _ous_ and _ate_, that there is a difficulty in using the word as substantive. When this can be avoided, we readily accept the new word, as _Pachyderms_, and in like manner _Mollusks_. If we examine the names of the Orders of Birds, we find that they are in Latin, _Predatores_ or _Accipitres_, _Passeres_, _Scansores_, _Rasores_ or _Gallinæ_, _Grallatores_, _Palmipedes_ and _Anseres_: Cuvier's Orders are, _Oiseaux de Proie_, _Passereaux_, _Grimpeurs_, _Gallinacés_, _Échassiers_, _Palmipedes_. These may be englished conveniently as _Predators_, _Passerines_, _Scansors_, _Gallinaceans_, (rather than _Rasors_,) _Grallators_, _Palmipedans_, [or rather _Palmipeds_, like _Bipeds_]. _Scansors_, _Grallators_, and _Rasors_, are better, as technical terms, than _Climbers_, _Waders,_ and _Scratchers_. We might venture to anglicize the terminations of the names which Cuvier gives to the divisions of these Orders: thus the Predators are the _Diurnals_ and the _Nocturnals_; the Passerines are the _Dentirostres_, the _Fissirostres_, the {335} _Conirostres_, the _Tenuirostres_, and the _Syndactyls_: the word _lustre_ showing that the former termination is allowable. The Scansors are not sub-divided, nor are the Gallinaceans. The Grallators are _Pressirostres_, _Cultrirostres_, _Macrodactyls_. The Palmipeds are the _Plungers_, the _Longipens_, the _Totipalmes_ and the _Lamellirostres_. The next class of Vertebrals is the _Reptiles_, and these are either _Chelonians_, _Saurians_, _Ophidians_, or _Batrachians_. Cuvier writes _Batraciens_, but we prefer the spelling to which the Greek word directs us.