240 [October, 1807. 



as possible, a knowledge of their parasitic enemies, so that these 

 might be utilized as checks if haply they could be introduced in 

 sufficient numbers with their hosts. The collection of Coccids which 

 he obtained was forwarded to Washington, where Dr L. O. Howard 

 has been for some time engaged in the systematic study of insect 

 parasites. It was necessary to ascertain as accurately as possible the 

 generic and specific positions of the Coccids collected, and with this 

 view specimens of each were forwarded to me for identification. On 

 the whole, more than a hundred parcels were sent to me, some of them 

 containing large numbers of specimens, and I have been able to 

 identify the majority of these, completing the work by about the end 

 of June in this year. In some cases, on account of injury from 

 mould or other fungus, or from destruction by insect parasites, I found 

 it impossible to make sure of the specific characters ; but the great 

 majority were in a condition to give sufiicient clearness, and the list 

 which I here give shows the result. 



There are only about thirty insects in the collection which I can 

 consider as new species, or new varieties of known species. In these 

 cases I am giving here a brief general account, in order that Dr. 

 Howard (to whom I have already sent their names) may, if he possesses 

 their parasites, employ these names without the necessity of referring 

 to them as "MS.," a thing which is always to be avoided if possible. 



Each parcel of specimens sent by Mr. Koebele (with a few ex- 

 ceptions) was marked with a number ; and in this list I have noted 

 each, with the attached letter K. The numbers were not consecutive, 

 and I suppose represent their position in Mr. Koebele's general insect 

 collection. In nearly every case the food-plant is also given, with the 

 locality. A few of these insects have been mentioned by me in my 

 paper of 189G, lately published in vol. xxix of the Transactions of the 

 New Zealand Institute. 



LIST OF SPECIES. 



AspiuiOTUS auranlii, Maskell (K. 1124, 1364 (?), 150G) : on Citrus, Ficus, 

 Palm, a " spiny shrub," and two unnamed plants, Hong Kong, Formosa. I am not 

 absolutely sure about No. 1364. 



Aspid. camellicB, Boisduval {A. rapax, Coinstock), (K. 1551) : on Cercis sili- 

 quastrum, Amoy. 



Aspid. cydonite, Comstock (K. IIIG, 1547) : on Casuarina, Sandwich Islands, 

 and on Hibiscus, Uong Kong. 



Aspid. ci/donife, CJomstock, var. tecta,var. nov. (K. 1561) : on " Ohio," Sandwich 

 Islands. A variety in which the insect agrees with the type, but the puparium is 

 flatter and is subcortical, with a covering of bark-cells. 



Aspid. dictyospermi, Morgan (K. 1528) : on Erythrina indica. Hong Kong. A 

 slight variation from the type, but the differences are unimportant. 



