The Bionomics of South African Insects. 521 



MkiA'RIU.K. CullCULIONIDvK 



Urodactylus, fsp. 6 Urodaetylus, sp. ? Apoderus 



tiff. '36. lig. 37. geiitilis 



(Nov. 1898) 



fig. as. 



The group consists of pale yellow insects \yith briiijlit 

 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 

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

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

 In the Urodactyli, 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 

 there are many other species of about the same size 

 which adopt the same warning pattern, including at least 

 four additional species of 3Iclyri(Uv. 



Certain members of this group are very abundant and 

 conspicuous in the spring months upon the Mosasa-tree 

 {Brachystegia sp.). 



E. Coinixirison het'ioecn certain Colcojitcrous Gro'U.ps in Borneo 

 and South Africa, with respect to Miinicry, Gammon 

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



[The following interesting comparison between the 

 phenomena of mimicry and common warning colours in 

 certain Coleopterous groups in Borneo and South Africa 

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

 graphs of the material of Mr. 8helford'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 AnthrihicLv to be 



