ERRATA. 



p. 55, at top, for: see la, read, see Ih. P. 55, midway, for: con- 

 tinuity of the mandibles with the labral sclerite. When present — , 

 read, continuity of these processes with the labral sclerite. When 

 the mandibles are present — . P. 64, midway, for: pulchrissimns, read, 

 pulcherrimus. P. 131, midway, second paragraph, for: widening, 

 read, winding. 



