This pretty little species, so much in habits and appearance like the European Tits, arrives in Jamaica early in September, and retires late in April, for we last saw it on the 20th. During the autumn and winter it was among the most common of our warblers. In the morasses, especially, they were to be seen in numbers, yet not in company, making the sombre mangrove-woods lively, if not vocal. They are active and restless, hopping perpendicularly up the slender boles, and about the twigs, peeping into the bases of the leaves, and crevices of the bark, for insects. The female, identified by dissection, has all the colours paler, but agrees with the male in their variety and distribution. Individuals, however, were found in September, which had the blue plumage of the head and of the rump, tipped with yellow, imparting a green tinge to those parts. YELLOW-RUMP WARBLER.[36] _Sylvicola coronata._ _Motacilla coronata_, +Linn.+—Aud. pl. 153. _Sylvicola coronata_, +Sw.+ [36] Length 5³⁄₄ inches, expanse 9²⁄₁₀, flexure 2⁹⁄₁₀, tail 2¹⁄₄, rictus ⁶⁄₁₀, (nearly), tarsus ¹⁷⁄₂₀, middle toe ¹¹⁄₂₀. I have little to say of this changeable species. It occurs but sparsely with us, coming rather late in the autumn, when the plumage is undergoing its transformation, so well detailed by Wilson. On only one occasion have I observed them numerous; towards the latter part of March, on the estate called Dawkins’ Saltpond, near Spanish town, many were hopping about the Cashaw trees (_Prosopis juliflora_) that abound there. All of these that I examined, had the yellow of the crown obscured, and some almost obliterated. One which I shot in October did not display it at all, while one in January had the hue very brilliant, but only at the bases of the coronal feathers; exposed or concealed as in some of the Tyrants. As far as I have observed, the manners of this bird are those of a Flycatcher, capturing minute insects on the wing, and returning to a twig to eat them. The stomach is usually filled with a black mass of minute flies. YELLOW-THROAT WARBLER.[37] _Sylvicola pensilis._ _Sylvia pensilis_, +Lath.+—Aud. pl. 85. _Sylvia flavicollis_, +Wils.+ _Sylvicola pensilis_, +Bonap.+ [37] Length 5¹⁄₄ inches, expanse 8, flexure 2¹⁄₂, tail 1⁹⁄₁₀, rictus ¹³⁄₂₀ (nearly), tarsus ³⁄₄, middle toe ¹¹⁄₂₀.