I'he Bionomics of South African InsccU. 847 



The following- beetles were refused, usually after 

 tasting : — 



Cantharid.E : — Mylahris pcilliata, 31. Jwloscricca, Elciicct 



Tufa, Zoniiis sp. (all most conspicuous). 

 COCCINELLID.E : — Ejnlach/ia dregci (characteristic col- 

 ouring). 

 CleriD/E : — " Clerics" sp. (scarlet). 

 Phytophaga : — Dlaccmtlia conifcra (Lycoid). 

 Melyrid.E : — Prionoccrus dimidiatns (Lycoid). 

 Lycid^e : — Three characteristically coloured species of 



LycAts. 

 Cetoniid.E : — Clintcri(t infuscata (orange thorax with 



two black spots, brown elytra, sonietinjes black). 

 Heteromera : — Lagria,?,^. Probably distasteful, con- 

 spicuous and syuaposematic with Phytophaga. 

 ScARAB^iDiE : — Onthophagns gazclla, smallish Scarabseid 

 with brown elytra and iridescent dark green thorax 

 and head. 

 With the possible exception of the last named, all these 

 species possess distinct aposematic colouring, and nearly 

 all belong to groups which are much mimicked, or fall 

 into important syuaposematic combinations. 



Mr. Marshall specially points out that the Kestrel, (J. 

 naumanni, was young, and it is probable that it had 

 never before had experience of many of these species. — 

 E. B. P.] 



10. Experiments on a tame Ground Horn-bill 

 {Bucorax coffer). (G. A. K. M.) 



Malveni, Natal, May 14, 1897. 

 March 14. Gave a tame ground horn-bill (Bucorax 

 caffer), belonging to Col. J. H. Bowker, 

 the following butterflies : two male A. 

 scrcnn, one F. lij/vus, one male H. misip- 

 pus, one male A. serena, all of which he 

 ate readily, taking them in the end of his 

 beak, crushing the thorax and throwing 

 them down his throat. I then gave him 

 L. chrgsippus. He took it, crushed the 

 thorax and dropped it at once. A second 

 specimen given a short time afterwards 

 was treated in the same manner. 

 „ 2-1. Gave the following butterflies to ground 

 horn-bill : three A. enccdon, one A. pctrxa, 



