( Ixxxiv. ) 
rarer are the known cases of (c) mimicry of Heterocera by 
Rhopalocera; but (1) certain Uraniidw are simulated by 
Papilionine ; (2) Agaristida by Nymphaline ; and (3) Litho- 
stide by Nymphaline. The mimicry of (i) Heterocera by 
Heterocera seems also to have been but seldom observed, but 
the cases recorded consist of (1) Ayaristide by Liparidie ; (2) 
Melamerida by Chalcosiide ; (3) Geometridw by Uraniidee and 
Chalcosiide, and (4) Lithosiidw by Agaristidee.* 
It will be seen that the foregoing enumeration ineludes not 
only the Batesian mimicries, but also those coming under the 
category of Miillerian associations of distasteful forms. To 
the latter class belong all cases occurring within the limits of 
the subfamilies Danainz, Heliconiine, and Acreine, and also 
many of those existing between species of one or more of 
those groups and certain Pierine and Papilioninee, as well as 
(among moths) the Agaristide, some Lithosiidee, and very 
probably others. It seems clear that, in the same circle of 
various species all approximating with more or less accuracy 
to one special type of coloration, marking, and outline, there 
will often be found, in the larger and more comprehensive of 
such associations, both Batesian and Miillerian mimicries ; 
this is indeed distinctly to be gathered from some of the 
cases tabulated by Bates himself, and has been lately well 
illustrated in the exceptionally rich Neotropical series of 
‘‘homceochromatic ’’ forms brought before us by Mr. W. F. H. 
Blandford, among which were several of the actual specimens 
figured by Bates in illustrating his famous memoir. In the 
searcely less opulent Oriental region (as Col. Swinhoe has 
(Proce. Ent. Soc. Lond., 1897, p. xxxvil.) that the species of Teracolus are 
inedible. I have noted (Proce. Zool. Soe. Lond., 1894, p. 21) another instance 
of marked resemblance to the females of the smaller East African Teracoli 
in the Satyrine, Physceneura prone. 
* There is some ground for suspecting Acherontia atropos to be a protected 
species. It has an apparent mimicker in Africa—its natural habitat—in the 
shape of another Sphingid of almost equal size, Protoparce solani, which, 
when seen at rest on tree-trunks, | have, on more than one occasion, mis- 
taken for the Death’s Head. I do not know if any experiments as to the 
distastefulness of Acherontia have been made; but I incline to the belief 
that, if this moth is shunned by any insectivorous animals, such avoidance is 
more likely to be due to its squeaking powers and its threatening gesture, 
when irritated or alarmed, of suddenly elevating the robust and spiny fore- 
legs. I know of no other moth that assumes this menacing attitude. 
