298 PROCEEDINGS OF THE ACADEMY OF [June, 
color is not the stimulus to capture, but that motion is. Manders 
concludes: “It would seem that those who assume that reptiles. 
take no part in the production of Batesian or Millerian mimicry 
are correct, though further experiments are required” (p. 710). 
Experiments in Europe. 
A series of experiments by H. Eltringham with Lacerta viridis*®® 
have as their main point the demonstration that a certain lepidop- 
terous larva (Boarmia rhomboidaria), was more distasteful to the 
captive lizards when it had fed on ivy than when fed on apple. In 
addition, a number of other insects and other invertebrates were 
used in the experiments. No general conclusions are given. Possible 
comparisons with Poulton’s tables of experiments (1887) are as 
follows: 
Poulton’s tables, 
1887. Eltringham. Animal tested. 
Pieris brassice, larva.............. R. A4D. Lacerta viridis. 
Aptis melbifer deen A many. R. - 
Later, Eltringham says that the caterpillars referred to in his 
previous experiments are not Boarmia rhomboidaria, but Odontoptera 
bidentata. The adult moths were eaten by lizards, to which they 
were fed by Messrs. Eltringham and Pocock. The latter found that 
they were acceptable also to a bird, Graculifera melanoptera. Eltring- 
ham concludes that the distastefulness of the larve was not intrinsic, 
but due to the character of the food in their digestive tracts.37 
Plateau states*® that seven Cistudo europea ignored the caterpillar- 
of Abraxas grossulariata, while one tried and rejected it. Coluber 
esculapit and Lacerta muralis disregarded the larve and rejected 
them when placed in their mouths. 
Experiments in America. 
Few experimental tests of the efficiency of the protective adapta--. 
tions of insects have been made in the United States. The most 
important series hitherto published in full was performed by Annie: 
H. Pritchett and was reported in the Biological Bulletin (Vol. 5, 
pp. 271-287, 1903). The animals used were Sceloporus floridanus,. 
Gerrhonotus infernalis, Crotaphytus collaris, Cnemidophorus sexli- 
3% Trans. Ent. Soc. Lond., 1909, pp. 471-478. 
37 “Fdibility of Lepidopterous Larve,” Proc. Ent. Soc. Lond., 1910, pp. xxxi, xxxii. 
3% Mém. de la Soc. Zool. de France, VII, 1894, p. 383. 
