1903.] E. P. Stebbing— Life- History of Chermes abietis-piceoe Steb. 229 



2-celled, ovules 2 in each cell, attached to the apex of an erect basilar 

 placenta. Style compressed, slender, long-exserted, thickened and 

 hairy about the middle, stigmatic-lobes 2, short. Fruit dry, indehiscent, 

 obconic, *1 in. long, densely hairy, crowned by 3 accrescent, persistent, 

 veined, oblong somewhat oblanceolate blunt calyx-lobes about *6 in. 

 long; seeds (by abortion) solitary, ellipsoid, embryo straight in the axis 

 of much fleshy albumen ; cotyledons broad, flat. — Distrib. A single 

 Malayan species. 



Jackia ornata, Wall, in Roxb. Fl. Ind., ed. Carey & Wall. II. 

 321. Young branches as thick as the little finger. Leaves oblanceolate, 

 the apex sub-acute, narrowed from above the middle to the short stout 

 petiole; upper surface glabrous and shining, the lower adpressed- 

 puberulous ; main-nerves about 12 pairs, prominent beneath ; length 6 

 to 12 in. ; breadth 2*5 to 5 in. ; petiole *4 to *9 in.; stipules widely and 

 deeply cupular, often 1 inch or more in length (to the end of the hairy 

 bristles). Flowers *4 in. long; corolla many times longer than the 

 calyx-tube, twice as long as the calyx-lobes when young, densely seri- 

 ceous externally ; bracteoles broadly oblong-ovate, shorter than the 

 flowers, imbricate, sericeous, the lower ones sometimes connate. Wall. 

 PI. As. Ear. t. 293 ; Wall. Cat. 6284; DC. Prod. IV. 621; Hook, fil Fl. 

 Br. Ind. III. 126 ; Miq. Fl. Ind. Bat. II. 237. 



In all the provinces. — Distrib. Malay Archipelago. 



A first note on the Life-History of Chermes abietis-piceae Steb. MS. — By 



E. P. Stebbing. 



[Received 21st June, 1903— Read 1st July, 1903.] 



In a paper read before the Members of this Society in April last 

 I gave an account of the mode of development of the alar appendages 

 of the Spruce form of Chermes abietis picese, Steb. MS.* I propose to 

 describe here in detail the further observations I have been able to 

 make up to the present on the life-history of this exceedingly 

 interesting insect. In order to make the somewhat complicated stages 

 of life passed through understood, and the subsequent parts of this 

 paper intelligible, it will be first necessary to give some short descrip- 

 tion of the various forms this insect assumes in its different genera- 

 tions. 



* Vide No. 2, p. 57 of this Volume. 



