THE CANADIAN ENTOMOLOGIST. 337 



SOME RECENT PAPERS ON HEMIPTERA. 



BY J. R. DE LA TORRE BUENO, NEW YORK. 



(Continued from page 302.) 



Another paper of interest is by j\Ir. G. W. Kirkaldy, " A List of the 

 Described Hemiptera (excluding Aleyrodidas and Coccidae) of the Hawaiian 

 Islands.^ 



This paper is in its nature a supplement and an addendum to his 

 former work on the same group in the " Fauna Hawaiiensis." The 

 arrangement and nomenclature very naturally agree with the author's 

 views on phylogeny and nomenclature, which, I understand, will be carried 

 out in his forthcoming catalogue of the Hemiptera, to be issued shortly. 

 But aside from these matters open to disagreement, with which ifi the 

 main I am in accord, there is much that is useful and of interest in the 

 paper. 



He begins by noting that the endemic families of the Heteroptera 

 number only 8 out of the 26 recognized at the present day ; and only 4 

 out of 12 Homopterous families; and further, that of these 12 families 6 

 only are represented by more than 10 species, namely: the IMyodochidte 

 (Lygseidie auctt), NabidcS, Aliridse, and the first three Homopterous 

 families. The absence of other dominant families in the Pacific " show 

 more plainly than words the real condition of the Fauna." 



"The leading characteristic of the Hawaiian Hemiptera is their 

 tendency and almost complete adaptation to ,an arboreal life. All, or 

 practically all, the Hawaiian Asiracidae — one of the most important 

 families numerically — are arboreal, a phenomenon otherwise known, so 

 far, only in one peculiar Australian genus, Froterosydne, Kirkaldy. 

 xAcanthia, usually a riparian genus, has one species representing, no 

 doubt, the ancestral form, inhabiting dry heaths in Europe ; nowhere but 

 in these Islands, to my knowledge, are there arboreal species." 



One hundred and seventy-four species are recorded, of which 138 are 

 considered endemic and 36 immigrant. The endemic genera reach 31. 

 Coccid^e and Aleyrodidas are not considered, and including these, 

 described as well as manuscript species, he estimates the total Hemipterous 



I. Proc. Haw. Ent. Soc, I, pt. 5, pp. 186-208, text fig's, i to 3, pi. 4, April, 

 1908. 



September, 1908 



