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Show 218 PROF. P. R. UHLER ON T H E [Mar. 6, Beaulieu, Grand Etang, and on the Mount Gay estate. It was found in the young stages on tbe Grand Etang, March 2, along the margin of running water, and in August it was found fully developed on the surface of stagnant ponds and on a sluggish stream near tbe sea. In the eastern United States along the seaboard its habits are essentially the same as in Grenada. Near Baltimore it lives on the ponds and around the overflowed freshwater marshes among the cat-tails and rushes, where it creeps stealthily about in search of small insects which fall into the water. 2. MESOVELIA AMCENA, sp. nov. Dark brown, almost black in some specimens; beneath pale brown with a plumbeous tinge, except the venter, which is yellow with transverse cloudings of darker colour on the segments, sides, and tip. Head broader in the female than in the male, obscure yellow, the vertex with a brown stripe each side and the middle line grooved, the tylus and borders of cheeks piceous ; antennae long and slender, rusty brown, paler on the basal portion of the first joint, the second joint about two thirds the length of the first and not quite as thick, the following joints long and more slender; rostrum testaceous, piceous at base and tip, reaching between tbe middle coxae. Pronotum opaque, velvety brown, marked with a whitish transverse spot on the middle of the collum ; the posterior margin widely sinuated ; the lateral margin with the carinate edge but slightly elevated, marked with two or three small pale spots; the humeral margins more distinctly reflexed. Scutellum almost black, a little rough, opaque. Coxae and legs ivory whitish, more or less infuscated on the tibiae and tarsi. Pleural pieces more or less tinged with plumbeous on a brown ground. Hemelytra velvety brown, opaque, the base and a long streak each side white ; behind the white band the surface is pale brown, and behind this, including the posterior part of the membrane, it is pale smoke-brown; the base of the membrane and a stripe at its tip obscure whitish. Venter glossy, often with a dark stripe each side near the lateral border. Length to tip of venter 2 mm.; width of pronotum f m m. From Mount Maitland and Mount Gay estate, August 26-31, on the surface of a stream, and September 6, at 50 feet above the sea, on a pool of water among grass and weeds. MICROVELIA, Westw. 1. MICROVELIA CAPITATA, Guerin. Microvelia capitata, Guerin, Sagra's Hist. Cuba, Ins. p. 417. A few specimens wrere collected at Balthazar in June and August, on ponds of stagnant water; and others were found on the Telescope and Mount Gay estates, in August and September, on the surface of freshwater pools. |
