A KEDESCRIPTION OF THE TYPE SPECIES OF THE 

 GENERA OF COCCIDAE BASED ON SPECIES ORIG- 

 INALLY DESCRIBED BY MASKELL.^ 



By Harold Morrison and Emily Morrison, 

 Of the Bureau, of Entomologv, United States Department of Agriculture. 



INTRODUCTION. 



As may be noted from the appended bibliography, W. M. Maskell, 

 registrar of the University of New Zealand, began the publication of 

 papers on tlie family Coccidae in the year 1879, and from that date 

 until his death in 1898, an almost uninterrupted series of studies on 

 the species of this family was produced by him, one or more articles, 

 usualW of considerable length, appearing annually except in the 

 years 1881, 1883, 1886, and 1888, to the number of more than 40. The 

 earlier work was confined to the Coccid fauna of New Zealand, but 

 before long specimens from Australia began to come to Maskell for 

 determination, and before his work ended he had described numerous 

 new species from that continent, from various Polynesian islands, 

 from China, Japan, and India, from South Africa, and even from 

 North and South America. In the course of these studies Maskell 

 brought together a large collection of insects of this family, amoimt- 

 ing to 597 numbers, most of which represent miduplicated species. 

 This collection includes imstained slide mounts of nearly all the 

 species present, and in most cases unmounted material of the same 

 species. Unfortunately Maskell had or retained only very small 

 quantities of unmounted material in his own collection with a ma- 

 jority of the species. 



Recognizing the absolute necessit}- for a reexamination of this col- 

 lection in the light of modern concepts if the classification of the 

 Coccidae was to develop properly, Dr. C. L. Marlatt, Assistant Chief 

 of the Bureau of Entomology, instituted negotiations looking to its 

 loan for study purposes in 1906. These were continued between 

 Doctor Marlatt, Dr. L. O. Howard, Chief of the Bureau, and Mr. 

 T. W. Kirk, at present director of the horticultural division of the 



» This paper was completed and presented for pubUcation before the appearance of 



MacGillivray's " The Coccidae," and in consequence maket> no attempt to discuss the 

 genotypes of some seventeen new Diaspine genera established in that work for rarions 

 species described by Maskell. 



No. 2407— ProCEEDI NQS U. S. NATIONAL MUSEUM. VOL. 60. ART. 12. 



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