_O. Uro-Skinneri_ was the latest discovery of my indefatigable friend Mr. Skinner (after whom it was named by Dr. Lindley), and who, though now settled in England, is as much devoted to his favourite tribe as when, while resident in Guatemala, he was wont to delight the Orchidists of Europe by the multitude of new and beautiful plants that he was constantly dispatching across the main. DISSECTION.--1. Side view of lip and column: _magnified_. Plate III [Illustration: Odontoglossum phalænopsis.] PLATE III. ODONTOGLOSSUM PHALÆNOPSIS, _Rchb. fil_. MOTH-LIKE ODONTOGLOSSUM. O. (LEUCOGLOSSUM, _Lindl_.) pseudobulbis ovatis obtuse ancipitibus 1-2-phyllis, foliis linearibus acutissimis racemis bi- vel trifloris spithamæis longioribus, sepalis oblongo-ligulatis acutis, petalis latioribus obovatis obtusis; labelli ampli pandurati emarginati bilamelligeri disco velutino, columnæ alis abbreviatis membranaceis. ODONTOGLOSSUM PHALÆNOPSIS, _Rchb. fil. in Seemann Bonplandia_, ii. 278; _Pescatorea, Linden et Rchb. fil_. ii. 44. MILTONIA PULCHELLA, _Hort_. Habitat in N. GRANADA, prope Aspasica, alt. 5-6000 ft., _Schlim_. DESCRIPTION. _Terrestrial_. PSEUDOBULBS _nearly two inches long, ovate, bearing one, or more frequently two, narrow linear, very acute_ LEAVES, _less than a foot long, and usually withered at the extremities_. RACEME _nodding, shorter than the leaves, furnished with a few small acute_ BRACTS, _and bearing two, or occasionally three, very large and handsome flowers, which, the markings of the lip excepted, are of a uniform white_. SEPALS _oblong, sharp-pointed, about an inch long_. PETALS _broader than the sepals, obtuse_. LIP _fiddle-shaped, its front portion deeply emarginate, spread out nearly flat, very broad, its side portions much smaller, rounded, and with two continuous upright lamellæ on its velvety disk; the lip has two large irregular pale-crimson blotches on its anterior portion, with concentric lines of the same colour on its lower portion, with a small patch of yellow on either side the isthmus_ (i.e. _point of junction between the upper and lower divisions of the lip_). COLUMN _short, with membranous wings much abbreviated_.