14 



>itlii\ Macarldce, Fidonklce, Zerenida, and Hibernida of Guene'e. Group IV 

 is nearlj equivalenl to GueneVs Larentidee, excepl thai Lythria is contained 



in it, and if also embraces Cheimatobia, and ends with Eupithecia. 



\\ bile there are main good features in (his classification, and the genera 

 are carefully described, 1 can see no good reason for placing the Geometrce 

 higher than the Ennomince, or for placing his second group above the third. 



The last important work is the excellent general treatise on this family 

 by A. Guene'e. It appeared in 1857." It is the most useful work that has 

 appeared, and it is of special value to entomologists in this country from the. 

 large number of American species described in it. The generic characters 

 are given with considerable fullness, and the characters drawn from the larva' 

 and pupa, are valuable, as being the first attempt to use them in conjunction 

 with the imaginal characters. 



M. Guenee's classification is as follows: He divides the family Uranides, 

 which he regards as a group equivalenl to the Nbctuidce or Phalcmidce, into 

 the following families: 

 I. Cydimonida. 

 II. Uruiiidn. 



III. Nyctalemon idee. 

 IV. Sematurida. 



The Phaldnites of the globe are subdivided into twenty-six families, as 

 follows: Urapterydce, EnnomideB, CEnochromidce, Ampkidasydce, Boarmidce, 

 Boh tob i<l<i\ Gi:nniiii'iili,\ Micoceridee, Palyada, Ephyridce, Acldalidce, Micro- 

 ii nl i. Caberida:, Macaridos, Fidonidce, Hazidce, Zerenidce, LigUhe, Hybernidm, 

 Larentidee, Eubolidce, Sionidce, Hedylidce, Erateiniidce, Emjrfocidm, Hypo- 

 ckrosidce. 



While I would not regard these groups as of sufficient importance to be 

 considered as families; in the succession of the genera, and the recognition of 

 the groups to which the learned author applies family names, I cannot but 

 regard this as the best classification hitherto presented, while it is the most 

 elaborate work on the family that we have. It must always remain a classic. 



It will be seen thai I have in the main followed 31. Guenee's arrange- 

 ment of genera. Il should be borne in mind that my arrangement is based 

 mainly on a study of North American species, with the aid of European types, 

 while GueneVs work includes species from the tropics of both hemispheres 

 an. I Australia, as well as China, and, in fact, the globe. Whether the changes 



