13 
1891.] W. Dolierty — A List of the Butterflies of Engano. 
The egg also varies little in the Danaidce, and affords few characters 
for classification. It is slightly like that of Libythea (which more re- 
sembles that of the Pieridce), and is nearly identical with that of the 
Acrceidce, and with those of Cynthia and Oethosia, the first genera of 
the Apaturidce, which are again connected by several links with Ar- 
gynnis, where the series seems to end. In the Danaidce it is large, 
soft, cartridge-shaped, more than half again as high as wide, yellowish, 
or sometimes pearl white. It has a variable number of upright ribs 
anastomosing near the apex (where the reticulations are more or less 
hexagonal over a varying extent of surface), and with horizontal cross- 
lines varying greatly in number and in distinctness, and generally hard 
to count. I append a list of species with the number of vertical ribs 
on the egg of each, and with that of the cross-lines in parenthesis, when- 
ever I know it. The numbers always vary slightly in the same species, 
and that of the cross-lines can only be given approximately. The egg 
of Nectaria and Macroploea I forgot to examine. That of Hestia is unlike 
the others in having the reticulations more or less hexagonal, the ribs 
being slightly zigzag. The figures support the idea that Hestia is nearer 
Euplcea than Ddnais. It will be observed that in Danais (including 
Ideopsis and Baden a, which are practically identical) the cross-lines are 
usually more numerous than the ribs, while in Hestia and Euplcea they 
are fewer, Stictoplcea coming near Hestia in this respect, as well as in 
the anal tufts. The figures for Danais chrysippus and perhaps limniace 
and tytia are doubtful. 
Hestia Group. Hestia cadellii, 
21 (14). 
hadenii, 
23 (14-15). 
lynceus , 
21 (14). 
Euplcea Group. Stictoplcea lacordairei, 
27 (13). 
Salpinx novarce, 
26. 
kollarii, 
22-23 (20). 
splendens, 
22 (18-19). 
Euplcea esperii, 
26. 
camorta, 
31. 
simulatrix, 
30. 
core, 
34 (23-25). 
inidamus, 
24-25 (20). 
alcathoe, 
39 (26-27). 
rhadamanthus, 21-23 (15). 
pinwillii , 
26 (18). 
Danais Group. Danais genutia, 
32 (30). 
revision of this genus, which is further complicated by the prevalence of local and 
soasonal forms, will prove a heavy task to future naturalists. 
