158 TlMEHRl. 
lost en route. Lately the plant has appeared with Messrs. J. 
Veitch & Sons, having been rediscovered by Mr. Burke, a well-doing 
traveller, as I learn from Mr. Harry Veitch, who requested that the 
plant might bear the name of its collector. 
These first flowers are only two-thirds the size of what they will 
become later. Sepals and petals of finest darkest blackish-purple in- 
side, with green signatures, partly linear, partly hieroglyphical, quite 
green outside. Lip white. The callus on the base, however, has thir- 
teen purple ribs, which makes a very pretty effect. 
The column is of light whitish-green, with numerous dark purple 
longitudinal lines in front, but with no hairs at all. 
The linear auriculae to the column, the very thick leaves, and the 
nearly tetragonous shining bulb, exceeding 2 inches in length, are very 
peculiar. 
Zygepetalum Burkei. n. sp. — Pseudobulbo tetragono costis obscuris 
solitariis inter angwlos, triphyllis ; foliss pergameneo-coriaceis ; pedun- 
culo plurifloro (ad 5) ; sepalis subbilabiatis, lateralibus deflexis, mar- 
gine interno supra involutis ; tepalis subaequalibus ; labello breve un- 
guiculato, ante unguem utrinque auriculato, dein ligulato antice dila- 
tato obtusato ; callo inter auriculas 13 jugo ; columna utrinque apice 
lineari auriculata. — Demerara, Robert Schom burg k, Burke I (Viv. 
mis. cl. Veitch.) H. G. Rchb. f. 
Insect Pests of Orange Tree;s. — The following valu- 
able report on a species of Coccus found by Mr. Jenman 
on orange, and other trees in this colony should have 
appeared in the previous number of Timehri : — 
Robert McLachlan to Sir J. Hooker. 
Westview, Clarendon Road, Lewisham, London, S. E., 
23rd Aug. 1883. 
To Sir J. D. Hooker, k. c. b. ; f. r. s., etc., etc. 
Director of Royal Gardens, Kew. 
Dear Sir Joseph, — I have the honour to report on certain portions of 
branches of orange from British Guiana forwarded through the Colonial 
Office which are greatly infested with a " scale inse6t" or " coccus." 
