7 
along the lines laid down by the International Rules above mentioned, 
has been made. Once the genotypes are fixed, it is possible, by a study of 
the structure of the species representing these types, to determine the limits 
and relationships of the various generic terms involved. The writer has 
attempted, therefore, such a generic sketch, following strictly Article 30 
of the above Rules; in the case of subsequent designation of the genotype 
he has invariably accepted the first valid designation, irrespective of any 
previous restrictions which may have been made under the so-called 
‘daw of the first reviser.” In a former paper (1916, Ent. News XXVII, 
393) the writer accepted this “law,” but has since become convinced that 
there is no clause in the International Rules which can be cited in justi- 
fication of this action, even though, to the present day, it is a common 
procedure among European taxonomists. The writer has also disregarded 
the so-called “Tentamen” genera of Hiibner as of the date 1806, following 
“Opinion 97” of the “International Committee on Nomenclature.” Such 
of these genera as occur in the Agrotinae are credited to Ochsenheimer 
(1816) who seems to be the first author to have published these names 
with more definite data, as required by the last sentence of the summary 
of the above “Opinion.” 
In the following sketch the genera have been arranged alphabetically 
for the sake of convenience; the list is fairly complete, although certain 
obscure genera of the Palaearctic fauna which have been erected for highly 
specialized groups or for single species, are not included. It is thought, 
however, that all genera which could possibly be used in our North Ameri- 
can fauna have been considered, but those genera which the writer recently 
excluded from the Agrotinae (1927, Can. Ent. LIX, 64) are omitted, as is 
also Ufeus Grt., which is only doubtfully Agrotid and which in any case is 
not likely to cause any trouble. The references given under the various 
generic headings are merely those dealing with type fixations; the terms 
used to designate genotypes are taken from Van Duzee’s “Catalogue of the 
Hemiptera.” 
Abagrotis Haplotype Agrotis erratica Sm. 
1890, Smith, Bull. 38, U. S. N. M. 9. 
Actebia Haplotype Noctua praecox Linn. 
1829, Stephens, 111., Brit. Ent. Haust. Ill, 20. 
Adelphagrotis Orthotype Agrotis stellaris Grt. 
1890, Smith, Bull. 38, U. S. N. M. 9. 
Agronoma Logotype Noctua vestigialis Rott. 
1822, Hiibner, Verz. bek. Schmett. 227. Includes crassa Hbn., cornea Hbn. ( tritid 
Sell iff.), valligera Schiff. ( = vestigialis Rott.), exclamationis L. 
1895, Grote, List N. Am. Eupter., etc., 23. Cites valligera ( vestigialis ) as type. 
1896, Grote, Jour. N. Y. Ent. Soc. IV, 85. Pseudotype, crassa Hbn. 
1903, Hampson, Cat. Lep. Phal. Brit. Mus. IV, 153. Pseudotype, crassa Hbn. 
Falls to Agrotis Ochs. 
Agrotis Logotype Ph. Noctua segetum Schiff. 
1816, Ochsenheimer, Schmett. Eur. IV, 66. Cites many species, including segetum 
Schiff. 
1827, Curtis, Brit. Ent. IV, PI. 165. Cites segetum as type. In this he is followed 
by Westwood, Grote, Butler, et al. 
1903, Hampson, Cat. Lep. Phal. Brit. Mus. IV, 363. Pseudotype, rectangula Schiff. 
