ERRATA. 



Since the publication of paper No. 1772, on September 23, 1910, the 

 author has submitted the following alterations: 



Page 2, line 6, read "six segments" instead of "seven segments," 



Page 17, seven lines from the bottom, delete "Angra Pequena." 

 The species which occurs here has recently been shown by the author 

 to be A. assirifiiUs var. affinis. 



Page 21, lines 19-28. Since these lines were printed the author has 

 received specimens of A. assi^nilis var. affinis from Angra Pequena 

 and Table Bay. The statements in lines 19 to 28 therefore no longer 

 hold. 



