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LYCJENID.E. 
central row of spots, sometimes irregular, sometimes quite even, 
and parallel to the hind margin. 3. A double hind-marginal row 
of black spots, often enclosing an orange band. 4. One or more 
spots placed between the base of the wing and the discoidal spot. 
In a few species the bind-marginal spots of the bind wings are 
studded with metallic silvery points. Some species exhibit all 
these markings, as for instance, the “common blue” (L. Icarus), 
the “ chalk blue ” (L. Corydon), &c. In others the orange bands 
are wanting between the bind-marginal rows, as in L. Avion. In 
many there is no bind-marginal row, as in L. Anjiohis, Semiaryiis, &c. 
The basal spots are often wanting, as in L. Medon, Argiolus 
Minima, &c. 
The black spots are generally surrounded by light or white 
rings ; sometimes they are wholly wanting, and their places 
supplied by white spots or patches, as in L. Artaxerxes, Flieretcs, 
Ac. 
Variations very frequently occur. That most commonly 
noticed is where the normally brown female of a species shows 
nearly as much blue on the upper surface as the male. This is 
often seen in the female of L. Icarus, and is very marked in the 
variety Ccronus of L. Ado)iis. On the under sides the spots are 
very liable to enlargement or coalescence, or to be elongated into 
dashes or streaks, often producing a very remarkable appearance. 
Sometimes the normally present basal or discoidal spots are “ con- 
spicuous by their absence.” Almost every extensive series of blues 
in a collection of butterflies will show a variety of these differences. 
Locality also has a great influence on the species. Boreal and 
Alpine forms especially differing from their types, both in size, 
colour, and times of appearance. 
Hermaphrodism is occasionally seen in species of this genus, 
and when it occui'S is very marked, on account of the dissimilarity 
of the sexes. 
The size of the European species varies from rather more than 
an inch and a half in the largest to less than half an inch in the 
smallest. 
The genus Ijijamia is a very large one, containing more than 
320 species, and, like the family LvciENiDm, is represented in every 
