BENEFICIAL INSECTS. 



SPECIES OF RECENT INTRODUCTION. 

 [Explanation of Plate.] 



1. Orcus chalybeus, Boisd.; female enlarged. 

 la. Head and prothorax of male; enlarged. 

 16. Natural size. 



2. Orcus australasia, Boisd.; female enlarged. 

 2a. Natural size. 



3. Novius Koebelei, Olliff.; male enlarged. 

 3a. Male; natural size. 



36. Female; natural size. 

 3c. Larva; enlarged. 

 3d. Larva; natural size. 



4. Shows branch with Cottony Cushion Scale, and larva of Novius 

 Koebelei. 



4a. Cottony Cushion Scale. 



46. Shows larva of Novius Koebelei (natural size), preying upon Cot- 

 tony Cushion Scale. 



5. Leis conformis, Boisd.; female enlarged. 

 5a. Male; natural size. 



56. Female; natural size. 



6. Thalpochares coccophagus, Myer; enlarged. 

 6a. Natural size. 



