( Ixxvi ) 



blance. Otherwise why should P. rapx on each occasion have 

 chosen the white flower in pieference to those of other colours 

 in such close proximity 1 " 



Dr. T. A, Chapman mentioned that he had once followed 

 a specimen of Colias edusa for a considerable distance, and 

 observed that it invariably came to rest upon a yellow leaf. 



The President also exhibited four specimens of Conorrhinus 

 megistus, Burm., a large South American Reduviid of a genus 

 which is well known to attack man. These four examples 

 were a few out of over three dozen brought back by W. J. 

 Burchell, and the notes upon them are an interesting record 

 of his experience of the habits of the insect. All four were 

 captured in the year 1828, and they bear labels as follows : — 



(1) " 22. 1. 28. This species I have generally found in my 

 bedroom, and this individual in my bed." 



(2) " 26. 5. 28. In cubiculis et in Iccto ipso." 



(3) "II 4. 6. 28. In lecto. Its body filled witli red blood, 

 sucked from the human body as the common Cimex lechdarms." 



(4) " 14. 6. 28. Percehejo paulista:' 



All these labels except the second were written by Burchell 

 in Brazil during his residence at Goyaz (Nov. 3, 1827 to Aug. 

 21, 1828). In the case of the second the original label had 

 been replaced by another carefully written by Burchell after 

 his return to England. 



The fourth label suggests a local name, which, however, 

 Burchell discredited in the following paragraph in his 

 Brazilian note-book. It is to be observed that the note 

 refers to a specimen taken three weeks later than No. (4). 

 " 1235. Cimex. The name Percehejo ^x«^f?wia, if applicable 

 to any, would be given to C. lectularius, but this name was 

 a mere extempore invention by the person who gave it 

 me. The present Cimex is here commonly called Percehejo 

 casciido." The note is undated, but the date " 4. 7. 28 " 

 accompanies No. "1235" on the specimen. 



Don Fernando de Arteaga has kindly interpreted the 

 Portuguese words. " Persevejo," as it should be spelt, means 

 " bug," while " Paulista," apart from various meanings derived 

 from St. Paul, bears, colloquially, the figurative significance 



