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Show 1894.] HEMIPTERA-HETEROPTERA OP GRENADA. 217 Mount Gay estate during the same month on spring-water; likewise on the Grand Etang, at an altitude of 1900 feet, on water. It differs from R. collaris, Burm., in the coloured margins of pronotum, the more numerously denticulate femora, colour of venter, and size. 3. BHAGOYELIA PLUMBEA, sp. nov. Only the unwinged form is at present known. It is short and thick, subconical posteriorly, bluish plumbeous, opaque, minutely hairy, with the sides of the abdomen broadly reflexed. The head wide, convex, with a slender black line on the front, the orbits of the eyes bordered with yellow; the rostrum testaceous, reaching considerably behind the anterior coxae; antennae moderately long, brownish, finely pubescent, the basal joint yellow at base, much longer than the third, which is also much longer than the second, the fourth about as long as the second, thick, distended in the middle. Pronotum very moderately convex behind the middle, sloping posteriorly ; the anterior lobe short, collar-like, with oblique sides, a yellow spot on the middle, and feebly carinate lateral margins, it is separated from the posterior lobe by a deeply incised line ; the posterior lobe is somewhat abruptly wider, with strongly reflexed lateral margins and subacute humeral angles, with the posterior margin abruptly deflexed; a broad segment behind this has in the depressed outer corner a tumid callosity which occupies the position of the wing-pad. The propleural flap is mostly yellow, as is the cap of the intermediate and posterior coxae and also the coxae, trochanters, base of anterior femora, and the immediate base of posterior femora; other parts of legs fuscous, sericeous pubescent, and the posterior femora unarmed. The posterior border of last ventral segment and sometimes the genital segment yellow. Length to end of abdomen, 3 2\, 2 3j mm.; width of pronotum, 3 1, 2 1? m m - This is a common species on the surface of salt-water around the inlets of the Florida Keys. Several specimens were secured in the Bay of St. George's, on the leeward side of Grenada, September 6, on the surface of the sea. Only specimens taken in copula were kept. Others were captured at the southern end of the island of St. Vincent, M a y 24, swimming on the sea, in a sheltered and still place near the shore. Gregarious inhabits, 50-60 together. They were also taken in copula at this time. The male is very much smaller than the female, and the latter is usually marked by a carinate line on the middle of the contact of the two lobes of the pronotum. MESOYELIA, Muls. 1. MESOYELIA BISIGNATA, Uhler. Mesovelia bisignata, Uhler, Standard Nat. Hist. ii. p. 273, fig. 324. A fine series of this insect was secured at Woburn, Granville, |