87 



with upper half black and lavender mixed, lower half white ; one 

 has black tubercles, in the other they are concolorous. Head 

 green with black vertical band in middle of each lobe ; one has 

 almost whole side of head black. 



Pupa — 23-25 mm. ; similar to H. ondrcmona, except that it 

 has the cremaster slightly produced (spines the same) and there 

 is a black dorsal protuberance on posterior margin of meso- 

 thorax; the metathorax is longitudinally striate, whereas in 

 andremona it is smooth. Pupa formed in cell in the soil. 



Meyrick in "Macrolepidoptera" of the "Fauna Hawaiiensis" 

 considers velans to be a native race of andremona, which is an 

 American species, and that the typical specimens caught by Dr. 

 Perkins were recent immigrants. Be that as it may, the differ- 

 ences shown above for the larvae and pupae taken in connection 

 with the differences in the adults, seems to me to be sufficient to 

 consider them as distinct species; i. e., if velans is derived from 

 andremona, it has become sufficiently modified as to be consid- 

 ered a species. 



Note on Plagithmysus perkinsi Sharp [Col.]. 



BY W. M. GIFFARD. 



(Presented by O. H. Swezey). 



I have just been fortunate enough to breed this beetle from a 

 larva I brought back with me from the neighborhood of the Vol- 

 cano House, Kilauea, Plawaii, June 6, 1908. On that date. I 

 took a finely matured specimen on a "naieo'' tree (Myoporum 

 sandzvicense) and noticing signs of decay on the tree, as well 

 as traces of the larva of this insect, I cut a section of the trunk 

 and brought the same with me to Honolulu. Ever since that 

 time, 1 have been watching and following up the boring of the 

 larva beneath the bark, having on two occasions come onto the 

 larva, fortunately however, not damagmg it. 



For the period between June 6, 1908, and the emergence of the 

 imago, r have had the section of wood enclosed in a sack at my 

 Tantalus home. The sack and all have been dipped twice per 

 week in pure rain water, and besides the wood has been exposed 

 to sunshine at various intervals. The imago emerged May 25, 

 1909. The larva had bored about 8 inches in a zigzag manner, 

 during the 11 months I had it in my possession. 



Plagithmysus perkinsi is one of the rarer species and difficult 

 at present to obtain unless under the most favorable circumstan- 

 ces. So far as I know, it has not before been bred from the 

 larva. 



Proc. Haw. Ent. Soc, 11, No. 2, Sept., 1909. 



