PSEUDOBULBS _ovate, slightly furrowed, compressed, bearing 2 leathery, sword-shaped, sharp-pointed_ LEAVES, _which are less than a foot long, and like the rest of the plant of a glaucous hue_. SCAPE _upright, longer than the leaves, bearing from 5 to 10 flowers, usually from 2 to 3 inches in diameter, but sometimes considerably more_. BRACTS _few, about an inch long, occurring at intervals somewhat longer than themselves, and fitting tightly to the stem_. SEPALS _and_ PETALS _nearly equal, oblong, waved, the two lateral ones attached at their base, of a pale yellowish-green tint, crossed throughout their entire length by broad bands of reddish-brown_. LIP _narrow, obovate, turned a little back, of a bright yellow colour, bordered by a belt of red blotches; on its disk are a group of tubercles, mounting two teeth on either side, and with cleft callus in front_. COLUMN-WINGS _bent inwards, and resembling in form the antennæ of an insect_. This _Odontoglossum_ was originally introduced from Mexico by the late Mr. Barker, of Birmingham, after whose gardener it was named by Dr. Lindley. It flowered with Mr. Barker somewhere about the year 1840, when a figure was prepared for the 'Orchidaceæ of Mexico and Guatemala,' but I had not then the opportunity of examining the plant, nor indeed did I ever actually see it in flower until the autumn of last year (1863) when I happened to meet with the specimen from which the illustration is derived, growing and blooming vigorously in the collection of Dr. Cauty, of Liverpool. The species had, in fact, virtually disappeared from collections during an interregnum of twenty years, and its reappearance is entirely due to the adoption of the rational system of cool treatment now happily prevailing, and under which it may be cultivated with the greatest ease. In habit _O. Insleayi_ is quite indistinguishable from _O. grande_; and although its flowers are far inferior in beauty to those of that glorious species, they bear a certain sort of resemblance to them in their colouring and general arrangement. The structure is however entirely different, for while _O. grande_ has no bristle-like appendages to its column, and therefore belongs to the section of the genus which has been called XANTHOGLOSSUM by Dr. Lindley, the processes in question are clearly present (see Dissections) in the case of _O. Insleayi_, thereby bringing it under the preceding section, to which the title of EUODONTOGLOSSUM has been given by the same authority. The time and mode of flowering are also different in the two plants, for while in _O. grande_ the flower-scapes appear almost simultaneously with the leaves, and are usually in perfection in July, those of _O. Insleayi_ are not produced until long after the pseudobulbs have been matured, nor do they expand their blossoms until late in the autumn.