502 



and T think I am right in saying- that the actual type of that 

 variety was obtained from the same kind of tree, although 

 recorded from Bohea. This individual was found resting 

 amongst dead leaves of a broken branch, on a day when it 

 rained heavily and continuously, and collecting was almost 

 impossible. The "on Bobca" was added later, when I had 

 become aware that C. microgastcr s. I. was attached to that 

 tree, having found fragments of the beetle and larvae the^eni, 

 and was not intended to refer to this particular example, b'lt 

 to the species. Though so infrequently met with alive, the 

 beetle must be quite numerous on occasion, as in 1903, and 

 also on a former occasion. I brought down large numbers of 

 the larvae to Honolulu from different localities, but owing to 

 my absence from home, these nearly all died for wan!: of 

 attention and the few beetles that emerged were dead and in 

 poor condition when I returned. One or two of thesp :hat 

 were in moderate condition I sent away, and one or two ot 

 the worst I still have. All the larvae were in Bobca. Two of 

 those recorded in the Fauna Haw. were taken on the trunks of 

 this tree near Waialua, and are said to differ from the typical 

 form. The late W. H. Ashmead. when collecting with me. 

 captured one on the wing as it flew over a bare ridge in the 

 mountains below the forest. T took one flying on the Tantalus 

 road a little above the house then owned by Mr. Giffard in 

 November, 1906 — a small specimen newly emerged, which I 

 still possess, and another in nearly the same localit>- on another 

 occasion. All these probably belonged to the form with the 

 tibial hairs shorter than the type and the base of the tibiae is 

 not bare to the extent shown in the original figure of the 

 species, li the variety hirfipcs from Pcrrottetia proves con- 

 stantly different from these Bohea specimens, the case would 

 be similar to that of P. vifticoUis and its var. loiii^iiliis. which 

 are found on these trees on Hawaii, the most evident difference 

 between the beetles being found in the tarsal hairs. One may 

 suspect that the typical luicrogaster found by Blackburn was 

 attached to some different tree, as the form on Bobca seems 

 to occur over most, if not the whole of Oahu. At the same 

 lime one must remember that in some Plagitliiiixsiis there are 



