1944] Genus Lycceides 107 
phologically, i.e., apart from current geographic obsessions 
and notwithstanding the inconvenience of the thing not flying 
where it ought to fly, rauraca Beuret was when discovered, and 
in my opinion remains so now, an absolute synonym of argyro- 
gnomon argyrognomon Bergstr., since in genitalia it corresponds 
to Tutt’s argyrognomon Bergstr. and in the appearance of the 
female to Bergstrasser’s figures; 2. There is no guarantee that 
the next German, or British, collector in the Hesse-Nassau dis- 
trict will not come across chance specimens or a little colony of 
X, different from the race of X ( lycidasoides Beuret, 1934), 
assigned to the general region, and similar to Beuret’s Aargau 
series — in which case the whole question would have to be 
brought up again (Tutt remaining the first reviser 5 ) ; and 3. It 
is not at all clear what name should be used for X if u argyro- 
gnomon ” is switched to Y. The name acreon Fabricius (1787 
Mantissa 2:76), on the basis of a worn specimen of argus auct 
(which combined at least X and Y) in the Banksian collection 
was assigned to the latter omnibus species by Butler (1869, Cat. 
Diurn. Lep.,descr. by Fabricius, in coll. B.M.: 171) which leaves 
us none the wiser, even if Butler did see “the type female in 
Copenhagen” as stated by Heydemann (1931, Int. ent. Zft. 
25:150) who anyway had not seen it himself and thus was per- 
fectly unjustified in using the name (l.c. pi. 1, fig. 4, 12) for a 
race of X. The name calliopis Boisduval ([1832] Ic. hist. lep. 
Europe 1:58, fig. 4,5) suggested by Hemming (1938, Proc. R. 
Ent. Soc. London 7,B:4) also cannot be used for X, until the 
female type (from Grenoble, France) and the Uriage male as- 
signed to calliopsis by Oberthur (1896, Et. ent. 20, pi. 5, fig. 64) 
are critically investigated in the B.M. collection. In view of the 
fantastic misadventures which names have undergone in this 
genus, pedantic care must be taken, so as to avoid some new 
nomenclatorial trouble in the future. 
The genus Lycceides, of which argyrognomon Bergstr. -Tutt 
is the type, is characterized by an uncus (including the falces) 
exceedingly different from the corresponding structure found in 
other subdivisions of the Plebejince , and as I think it advisable 
to base specific unities upon the intrageneric variation of that 
character which intergenerically is responsible for the greatest 
5 In the sense that by figuring the male genitalia he first applied the name 
argyrognomon Bergstr. (which previously to 1909 had covered at least two 
Lycceides species and a form of Plebejus argus Linn.) to a definite species. 
