1940] 
Mimicry and Warning Coloration 
3 
of a sagrei, was rejected; then a Trichrous was swallowed 
at once. The observations indicate that although the Tri- 
chrous is edible, the Anolis has a strong tendency to avoid 
this Cerambycid. 
A single specimen each of Anoplischius venustus (J. — D.) 
(Elateridse) and Calocosmus venustus Chev. (Ceramby- 
cidse) were taken at Soledad in June, but no more were 
found. Darlington collected both these species in May and 
illustrated them in his paper. 
Examples of Possible Warning Coloration 
In company with Thonalmus and therefore in the same 
environment as Anolis sagrei occurred several brightly 
colored inedible insects. The cage experiments strongly 
suggest that these insects are examples of warning colora- 
tion. 
Hemiptera Refused 
The following Hemiptera Were not eaten, although Anolis 
readily ate plain-colored Hemiptera. Both the Dysdercus 
and the Oncopeltis exude a pink body fluid when handled; 
also Dysdercus has a characteristic odor. 
Euryopthalmus sellatus (Guer.) (Pyrrhocoridse) : This 
species is 9-12 mm. in length. On the upper side the pale 
markings are cream colored, with a narrow orange margin. 
The anterior, middle, and base of posterior femora are 
orange. The rest of the upper surface is black. Of two 
pairs placed with two separate Anolis sagrei, two died the 
following day and two were alive five days later. 
Dysdercus andrese (Linn.) (Pyrrhocoridse) : The length 
of this species is 8-10 mm. The pale markings, as indicated 
in the photograph, are red and the rest of the upper surface 
black. Of two pairs placed with two separate Anolis sagrei, 
both were dead the next day. Darlington also found that 
this and the preceding species were not eaten. 
Oncopeltis fasciatus (Dali.) (Lygseidse) : This species is 
12 mm. long with pale markings orange and the rest black. 
One example was alive after four days with an Anolis sag- 
rei. 
It seems pertinent here to quote a passage from Usinger 
(Univ. Calif. Publ. Ent., 7: 38, 1939). “It is interesting 
