494 



in the above named district (the series consisting of darivhuanns 

 and bisliopi mixed) and under (20) four other individuals 

 from another series found on the same species of tree are also 

 darzmniamis. Whether this series consisted entirely of the 

 latter or partly of bisliopi I do not know. In July. 1906. I 

 obtained one or two specimens of darwinianns on a dying 

 Xanthoxylum tree which was full of Plagithmysus larvae. 

 The tree was decaying and the bark gave out a strong odor. 

 From material carried away I subsequently bred a series of P. 

 hishopi, nine examples of which series I still possess. No 

 specimen of darwinianus was bred, and I thought it probable 

 that those I took were merely attracted by the scent, the species 

 being abundant on Sophora near by, but Mr. Giffard's expe- 

 riences lead one to suspect the probability of its breeding both 

 on Sophora and Xanthoxylmn. 



14. Three examples of P. hishopi, being part of a series 

 taken on Peiea cinerca near Kilauea, are quite ordinary, as 

 also are two taken on Xanthoxyluui from a series of mixed 

 darwinianus and bisliopi referred to above under (19). The 

 series that I bred from the latter tree showed no differences 

 whatever from another series (also bred) from Pclca. 



13. The larger specimen taken at 1800 ft. Olaa, 19 miles 

 from Hilo, Hawaii, resting on ]\Iamake (Piptiiriis alhidnsj, 

 is a not uncommon variety of P. lauiarckianiis. in which the 

 pubescent lines of the elytra are yellow and very wide basally, 

 so that the insect closely resembles snlphurcscens in appearance. 

 It is, however, perfectly distinct from this, and lauiarckianiis, 

 so far as I know, always has red antennae in this variety, 

 while in sulphurescens they are black. Sharp has specially 

 alluded (F. H. II, p. Ill) to the alliance between these species. 



13a. The second and smaller example is of the more black- 

 legged variety, but also has flavescent lines of pubescence, and 

 was taken on Siittonia — "no doubt an accidental cai)ture" — at 

 3800 ft., Olaa. The flavescent color of the lines in laiiiarckianus 

 is not a constant character of the species. I have myself bred 

 specimens from the same piece of Piptiirits both with pure 

 white and with flavescent lines, and no doubt these soon fade 

 to white, so that the latter color is likelv to be more usual in 



