492 



when the right tree and region is discovered. P. vitticollis var. 

 longiilus so far as learned in previous years from Dr. Perkins, 

 is quite common on Bohea in the dense wet forests of Puna. 

 The few visits made by the writer in this particular region 

 have not been very successful in so far as securing a series oi 

 that species. This, perhaps, is due to the large clearings which 

 have been made in that forest region by homesteaders and 

 farmers during late years, as well as to the fact that special 

 search for longicorns has not been attempted by the writer up 

 to the present time. The forests in the Puna region have, for 

 the reason stated above, receded to such an extent as to make 

 them in a large measure almost inaccessible in a day's outing 

 from the Volcano House. 



The fact that P. blackburni has not, so far as known, been 

 seen or captured in the neighborhood of Kilauea, but only on 

 the Kona slopes of Mauna Loa, and that it is attached, in the 

 latter region, to the same tree as P. darwinianns is at Kilauea, 

 is of interest. Perhaps it may be possible to secure some 

 information as to this, as well as to all the other Kilauea species 

 of Plagithmysus, from Dr. Perkins, and also secure from him 

 an example of snlphurescens and of vicinns, both of which are 

 badly needed in our reference collections. The same may be 

 said of certain species from other islands. 



The large series of Nesotocus munroi were all taken in the 

 wet forest ofif Cheirodendron gaudichandii growing in a recently 

 burned area on a new homestead. The two trees observed 

 were in a scorched and dying condition and in perfect condition 

 for these insects, to which they are well known to be attached. 

 A fair series of extraordinary large males were taken on one 

 of the trees, without females, and the males seen in copula on 

 the other trees were all of the ordinary size. The series repre- 

 sents both sexes about equally. The writer has visited scores 

 and scores of Cheirodendron trees in the neighborhood of the 

 wet forests at Kilauea during recent years, but he never found 

 these attacked by Nesotocus when the tree was in a healthy 

 condition. The same may be said of all trees to which Plagifh- 

 mvsus are attached. 



