2 
Psyche 
[March 
Examples of Mimicry: Thonalmus-like Beetles 
Callopisma adjuncta E. Oliv. (Lampyridse) : Darlington 
states that it is a forest dweller, but one specimen was 
found in open country on the same tree with Thonalmus. 
Since no more were seen, it was not used experimentally. 
This Callopisma is about the same size as a small Thonal- 
mus; the pronotum and anterior fifth of elytra are orange 
and the rest of the elytra are black. Two specimens of a 
yellow and black Lampyrid (Photinus nefarius E. Oliv.), 
of similar size, were readily eaten by an Anolis sagrei. 
Drapetes bicolor Cast. (Throscidse) : This beetle was not 
mentioned by Darlington. It was found in company with 
Thonalmus but is only 4.2 mm. long, whereas the length of 
the smallest Thonalmus is 6 mm. The head and pronotum 
are reddish orange and the elytra are metallic blue-green. 
Unfortunately Drapetes quickly died in captivity. Of six 
examples placed with three separate Anolis sagrei , all died 
within 24 hours, but only one of them was eaten. 
Chalepus sanguinicollis Linn. (Hispidae) : Although not 
mentioned by Darlington, sanguinicollis occurred in com- 
pany with Thonalmus. It is larger than the smallest Tho- 
nalmus and with orange or red on the pronotum and anterior 
third of elytra, extending posteriorly along the lateral mar- 
gins. The head and remainder of the elytra are black. One 
specimen, placed with Anolis sagrei , was eaten by the follow- 
ing day. 
Trichrous pilipennis Chev. (Cerambycidse) : In Darling- 
ton’s cage experiments an example of this species survived 
five days, at which time his experiment was closed. During 
the writer’s experiments, in the course of a week, six Tri- 
chrous were placed with an Anolis sagrei, two of which were 
eaten the first day, another two days later; two died after 
being in the cage two days; and one was alive after three 
days in the cage. Of three Trichrous placed with another 
sagrei, one was eaten and one died on the second day, and 
the remaining example died four days later. Still another 
Anolis sagrei failed to eat a Trichrous during five days, when 
the experiment was closed. During these experiments a 
variety of other insects were eaten. In order to test the 
edibility of Trichrous, a Thonalmus, placed in the mouth 
