doxemis portoricensis. The former is mentioned in the following 

 statement by I\Ir. E. K. Carnes, which appeared in the IMonthly 

 Bulletin of the State Commission of Horticulture of California. 

 Vol. 1, No. 8, page 398. In connection with data on the introduc- 

 tion of beneficial insects into California, Mr. Carnes states: ''Prom 

 Prof. C. W. Hooker, Mayagiiez, Porto Rico. First shipment : Lcpi- 

 dosaphes heckii, Chrysomphalus aonidum. Aspidioiipliagus citrinus 

 issued in considerable numbers. Second shipment : same material. 

 Very few A. citrimis issued." Coccidoxcnus portoricensis was de- 

 scribed by ]\Ir. J. C. Crawford from ''the wax scale," collected in 

 San Juan by Mr. Tower.^ 



This scarcity of references would indicate — considering what has 

 already been published on the scale-insects of the island — that this 

 group has few insect enemies in Porto Rico. This, however, is not 

 the case, parasitism of many species being common. 



In the present paper the idea has been to list all the species 

 previously recorded from the island, with the locality, host-plant, 

 the name of the writer, and a reference to the publication from 

 which the data is taken. Added to this are the names of the species 

 not heretofore recorded from Porto Rico, as well as new host-plants 

 and localities for those already known to be present. No attempt 

 has been made to include those species mentioned by other w^riters 

 by genus or common names only, and where no more definite locality 

 than "West Indies," with reference to any species, is given in a 

 publication, that species has been omitted. AVhile no endeavor has 

 been made to summarize what has already been done on the island 

 on the life-histories of the various species, natural and artificial 

 methods of control, etc., I believe the bi])liography is quite com- 

 plete and the reader will find much of interest in the publications 

 mentioned. 



The data now presented for the fir.st time are taken from the 

 notes and specimens in the collection formerly belonging to the 

 Experiment Station of the Porto Rico Sugar Producers' Association, 

 and now at the Experiment Station of the Board of Commissioners 

 of Agriculture of Porto Rico. All of the specimens have been exam- 

 ined by Mr. E. R. Sasscer, formerly of the United States Bureau 

 of Entomology, and now with the Federal Horticultural Board. 

 The writer wishes especially to thank Mr. Sasscer for liis kindness 

 in making the determinations and i-eading over the manuscript. 

 Without his assistance the publication of this list would not have 

 been possible. 1 wish also to thank I\lr. D. L. Van Dine, formerly 



' Descriptions of New Hvinenoptpra, No. 6, No. 1979. From Proc. U. S. Nat. Mus. 

 Vol. 4.5, pp. 241-260. May 22, 1913. pp. 248-249. 



