242 MR. p. CAMERON ON [Mar. 1 9, 



The d" is coloured like the $ ; its fore legs may be entirely 

 without black in front and the coxae there pale yellow ; the an- 

 tennae only differ from those of the $ in being thinner towards 

 the apex : the clypeus is flat, with the sides slightly raised ; the 

 lateral suture at the top is not so widely oblique, the space between 

 it and the eyes being much less ; its apex in the middle broadly 

 and roundly projects, and is clearly separated from the lateral 

 portions, which are narrower than it : the epipygium is armed at 

 the apex with two stout teeth ; their basal slope is longer and more 

 rounded than their apical, which is straight and only slightly 

 oblique. 



Comes nearest apparently to the Australian P. lejiidus Fab., 

 but, among other differences, that may be known from it by the 

 clypeus ending in a sharp angle. 



PoLisTES Lrcus, sp. nov. 



Flavus, abdominis hasi nigro macidata ; alis fulvo-liycdinis ; nervis 

 stigmcdeque fulvis. $ . 



Long, 20 mm. 



Antennae rufous, covered with a white pubescence. The ocellar 

 region is deep black ; the front ocellus is separated from the 

 posterior pair by a distinctly greater distance than these are from 

 each other. Clypeus smooth and sparsely covered with rufous 

 hairs ; it is longer than broad ; above it is roundly and broadly 

 incised downwards : the fovese are not widely separated from the 

 eyes; the keel issuing from them to the eyes is not widely separated 

 from the eyes ; the space bounded by them and the latter being nar- 

 row, distinctly longer than broad, and not forming a triangle as in 

 P. hehrceiis. The part between the antennae distinctly projects. 

 Thorax smooth and shining and covered with a white microscopic 

 down. The sides of the mesonotum at the tegulae, its base more 

 broadly, and an oblique line over the hinder coxae are black. The 

 suture on the mesopleurae below the tegulae is roundly curved 

 on the lower part and bulges backwards below the middle ; 

 there is no suture running to the base. Legs coloured like the 

 body. Wings hyaline, with a distinct fulvous tinge, which is 

 deeper and more distinctly visible along the apical margin ; the 

 costa and stigma are fulvous, as are also the nervures. On the 

 abdomen the bases of the basal three segments are black ; the 

 amount of the black colour probably varies. 



This species looks at first sight like one of the pale yellow forms 

 of P. hehrceus, but it wants the black, or at least dark-coloured, 

 waved lines found always on the abdomen of the latter. The two 

 may be readily separated by the difference in the form of the 

 clypeus : in Jiehxeus its breadth in the middle is not perceptibly 

 greater than its length ; in the present species its length is dis- 

 tinctly greater than its greatest breadth ; in hebrceus, too, the suture 

 at the top is much more obhque, so that its top is much more 

 widely separated from the eyes. 



