The Bionomics of South African Insects. 521 



Melyrid.e. Cuuculionid^. 



Urodactylus, sp. 6 Urodactyliis, sp. ? Apodenis 



fig. 36. fig. 37. gentilis 



(Nov. 1898) 

 fig. 38. 



The group consists of pale yellow insects with bright 

 red anterior section, made up by thorax and head, of which 

 the eyes only are black in some of the species, although in 

 others black markings extend over a variable proportion 

 of the cephalic surface. The elytra are crossed trans- 

 versely by a black band at the base, and another at the 

 junction of the third and posterior fourth of their length. 

 In some species the anterior band, in others the posterior 

 is reduced to two more or less widely-separated spots or 

 patches. In the species of Crioceris, the anterior band is 

 represented by four small black spots, two on each elytron. 

 In the Urodacti/li, the posterior band is represented by a 

 semi-circular black mark with the concavity directed 

 posteriorly on each elytron. 



In spite of the variation in detail the species would 

 produce the 'same effect at a little distance, and there can 

 be no doubt about the interpretation of the whole as a 

 synaposematic combination with the Curculio as a doubt- 

 ful pseudaposematic member. Mr. Marshall states that 

 tliere are many other species of about the same size 

 which adopt the same warning pattern, including at least 

 four additional species of Mchjriclm. 



Certain members of this group are very abundant and 

 conspicuous in the scoring months upon the Mosasa-tree 

 {Bracliystcgia sp.). 



E. Comimrison hetween certain Coleopterous Groups in Borneo 

 and South Africa, ivith respect to Mimicry, Common 

 Warning Colours, etc. (G. A. K. M.) 



[The following interesting comparison between the 

 phenomena of mimiciy and common warning colours in 

 certain Coleopterous groups in Borneo and South Africa 

 respectively, was made upon tlie receipt of a set of photo- 

 graphs of the material of Mr. Shelford's paper now being 

 published by the Zoological Society. — E. B. P.] 



Salisbury, Jan. 11, 1901. — I should be interested to 

 know whether Shelford has proved the Anthribidm to be 



