186 



coloration. Described from a series of 14 specimens bred from 

 larvae mining leaves of a native tree {Boehmeria stipularis) in 

 the mountains of Oahu, and from pupae found on the leaves of 

 the same tree. I first noticed the work of this leaf-miner Sep- 

 tember 5, 1909, in the mountains at the head of Manoa Valley, 

 and bred specimens from material collected that day. Since then 

 I have observed it wherever I have seen its food-plant in the 

 mountains of Oahu. 



The full-grown larva is a little over 6 mm., strongly con- 

 stricted between segments, segment behind head large, head 

 much retracted in it, remaining segments grajdually narrowing 

 to posterior end of body ; pink on dorsal, surface except head and 

 folloAving segment which are yellowish, yellowish below; eyes 

 black; spiracles minute, circular, very pale brown; prolegs on 

 segments 7-10. When full-grown the larva emerges from the 

 leaf and pupates on the under side of the leaf beside a rib, es- 

 pecially in an axil at base, after having spun a few fibers of 

 silk in which to fasten itself. 



The pupa is 4.5 mm. long. Head triangularly pointed; a 

 lateral projection behind each eye, curved a little anteriorly ; a 

 small longitudinal lateral curved projection on mesothorax; a 

 much larger one on metathorax; a low median dorsal ridge on 

 thorax; a lateral thin narrow flange along abdomen, containing 

 the spiracles on its margin'; no median dorsal ridge on abdomen ; 

 wing-sheaths extend nearly to tip of abdomen ; antenna-sheaths 

 extend a little beyond tip of abdomen ; cremaster bifid with two 

 widely diverging projections, each having 2 or 3 hooked bristles ; 

 all the dorsal setae are hooked into the few fibers of silk in 

 which the pupa is suspended, ventral surface turned outward. 

 Color yellowish, with a pink tinge on the back; projections on 

 thorax, lateral flange of abdomen and eyes pale brownish ; tips 

 of antenna-sheaths black, also two short oblique black lines ven- 

 trally between anterior leg-sheaths and antenna-sheaths. One 

 larva under observation produced a pupa which was very pink 

 above and brown below. The adult emerged in 9 davsj 



DECEMBER loTu, 1911. 



On account of small attendance, the regular meeting of the 

 Society for December (being the annual meeting and election' of 

 officers) was postponed from December 1 to December 15. 



