220 peof. p. r. tthlee ox the [Mar. 6, 



the pleural flaps strongly curved, margined with yellow. Scutellum 

 concealed beneath the end of pronotuna. Legs slender, tinged 

 with fuscous, paler at base ; the anterior femora dull testaceous, 

 about half as long as the middle pair, the posterior pair nearly 

 twice as long as the middle one, and likewise the same in the tibiae. 

 Hemelytra whitish translucent, with the veins black and thick; when 

 the wings are closed the submarginal areole forms a long silvery 

 streak which is followed behind by an oval areole of like colour, 

 and this in turn is followed at tip by a similar spot which does 

 not fill the areole : wings milk-white. Tergum dark brown, venter 

 at tip and coxa? pale testaceous, the connexivum bordered with 

 pale yellow. 



Length to tip of venter 3-3| mm. ; width of pronotum 1 mm. 



Several specimens of this remarkable insect were taken on the 

 Mount Gay estate, September 21-26, on water in a large iron 

 kettle. 



This species stands by itself as regards the remarkable elongation 

 of its posterior legs. It thus helps to bridge over the gap between 

 this group and the HydrobaUdos, although but few of the other 

 elements of its structure have undergone important modification. 



5. MlCROTELIA MODESTA, Sp. nOV. 



Similar to M. longipes, but much more robust, dark brown or 

 fuscous, velvety opaque above, paler fuscous beneath and spread 

 with plumbeous bloom. Head long, tapering at tip, with a convex 

 ridge on the middle line ; the throat, cheeks, and border of the 

 orbits of the eyes testaceous ; antennae of medium thickness, dull 

 testaceous, more infuscated on the ends of the joints, the fourth 

 joint longest, the second shortest, and the basal one a little shorter 

 than the third ; rostrum testaceous, piceous at base, on the 

 middle line, and at tip. Pronotum steep anteriorly ; the collum 

 marked each side with yellow, spread with whitish bloom, and 

 1 laving the slender carina on the middle black ; this carina runs 

 back to the apex of pronotum ; humeral border triangular, a little 

 elevated at tip ; apex of the pronotum triangular, feebly curved ; 

 border of the posthumeral sinus and the posterior margin of the 

 epipleural flap testaceous ; underside of collum, sternum, coxoe, and 

 femora testaceous, remainder of legs dusky testaceous, more infus- 

 cated near the articulations and on the tarsi. Scutellum blackish, 

 all but the tip concealed. Hemelytra wider than in M. longipes, 

 milky whitish on the clavus and in all the areoles, the veins dark 

 brown, and the costal border black or fuscous, sinuated, the apical 

 areole with a large, ovate, white spot. Connexivum yellow ; middle 

 line of the venter and the genital segments dull fulvous, the middle 

 sometimes with a slender black line. 



Length to tip of venter 2j-3mm. ; width of pronotum 1| mm. 

 The middle femora are about one third longer than t he anterior 

 ones, and the posterior femora are nearly one third longer than 

 the middlo ones. One female is shorter and darker than the 

 others. 



