No. 443.] 



NOTES AND LITERATURE. 



80 1 



from 1850 to 1875, 145 species now held valid were published. At 

 the end of the period, only 240 species were known, as against 1449 

 in 1903. The last period, from 1876 to 1903, saw the publication of 

 no less than 1209 species, and no doubt the next will make known a 

 far larger number. The beginning of the fourth period was coinci- 

 dent with the first labors of Maskell of New Zealand, whose writings 

 extended over many years, and made known the rich coccid-faunae 

 of New Zealand and Australia, treating also of a good many species 



ever before, but still not sufficiently so to deal with the material 

 which might readily be obtained. The coccid-faunae of Cuba and 

 the Philippines, for example, are practically unknown, tl gl tl e c 

 is no doubt that they are rich and interesting. 



The genera recognized in the list number 168, distributed in sub- 

 families as follows: _ Diaspinre, 34: Coccinae, 57 ; Tachardiime, 2 ; 

 Dactylopiinae, 54; Conchaspinae, 1: Phenacoleachiina-, 1; ( >rthe- 

 ziinae, 3 ; Margarodinae, 5; Monophlebinre, 11. I have thought it 



ne of these, such a 

 blages of more or le 

 lally be subdivided. 



1 Lecaniodiaspis th< 



