87 



with Tipi3er half black and lavender mixed, lower half white ; one 

 has black tubercles, in the other thev are coneolorous. Head 

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

 almost whole side of head black. 



Pupa — 2.3-25 mm. ; similar to //. andremona, 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 Hawaiien- 

 sis" considers velans to be a-native raceof andremona, which is 

 an American species, and that the typical specimens caught by 

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

 differences shown above for the larvae and pupse taken in con- 

 nection 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 considered a species. 



Note on Plagithmysus perkinsi Sharp [Col.] 



BY W. ]Nr. GIFFARD. 



(Presented by O. H. Swezey.) 



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

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

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

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

 sandwicense ) 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, 

 I 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 damaging it. 



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

 the imago, I 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 perhinsi is one of the rarer species and difficult 

 at present to obtain unless under the most favorable circum- 

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

 h 



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



