272 Mr. B. P. Uvarov on a new case of Transformative 



stages. This stage is figured by both Brunner (1878, 

 fig. 36) and Dohrn (1892, fig. on p. 65), though the latter 

 figure is very unsatisfactory. 



It is difficult to say whether the described stage is actually 

 the last larval one, but it is very likely that it is so, judging 

 by the dimensions of the head and the length of the 

 pronotum. 



The adult form (Charpentier, 1841, pi. 12; Brunner, 

 1878, fig. 35 ; Saussure, 1898, pi. 9, fig. 9) differs from the 

 last described larval stage, apart from the presence of the 

 fully developed wings and elytra which are very broad and 

 leaf-hke, by the pronotum being completely flattened on 

 the upperside, without any constrictions or swelling, 

 though still slightly thickened anteriorly and posteriorly, 

 densely punctured throughout, with the angulate trans- 

 verse sulcus somewhat more distinct ; it is quite clear from 

 the comparison of the last larva and adult that they 

 represent the same insect. 



This latter conclusion is still more strengthened by the 

 study of a larva of the Ceylon species (Kandy, Ceylon; 

 Brit. Museum) which belongs to the last stage and in 

 which the pronotum has only very faint indication of con- 

 strictions and is practically identical in shape with that 

 of the adult, the more so, that in this species the pronotum 

 of the adult is not so strongly flattened as in the Javan one. 



This wonderful case of one insect mimicking in different 

 stages of its postembryonic development two other different 

 insects {Collyris and Tricondyla) and ultimately assuming 

 the shape and coloration of a leaf, might seem unbelievable, 

 if there were not another definitely proved example of the 

 same phenomenon in the case of the African Tettigoniid 

 Eurycorypha, which is also leaf-like in the adult stage and 

 an excellent ant-mimic, described under different generic 

 name Myrmecophana, in the two first larval stages, while 

 intermediate stages are also of a transitional character 

 (Vosseler, 1908). Vosseler (/. c.) proposed for the latter case 

 the term " Transformative Mimicry," and I think that it 

 may be very conveniently adopted also for the case of 

 Condylodera-Trochalodera-Leptoderes, which is still more 

 striking than that of Myrniecopliana-Eurycoryplia; it 

 would be, however, more correct to use the term "De- 

 ceptive Resemblance" instead of "Mimicry," which does 

 not cover the phenomenon of leaf -resemblance of the 

 adult. 



