106 Timehri. 



May be known from the other Guiana species by the dilated appendage 

 on the apex of the antennal scape. It may or may not be a sexual character. 



The species is dedicated to Mr. J. J. Eiunan, B.A., LL.B., the President 

 of the Royal Agricultural and Commercial Society of British Guiana. 



Spilochalcis testaceicollis , sp. n. 



Black, covered with a white pile ; the face, clypeus, mandibles except 

 the teeth, palpi, the outer orbits narrowly, the four anterior tibiae and a large 

 curved line on the upper apical half of hind femova ; tarsi, whitish yellow, the 

 sides of the pronotum broadly and the four anterior femora testaceous the 

 four anterior coxae and trochanters and the hind legs except the tarsi (which 

 are testaceous) black ; the hind femora with 1G teeth, which are somewhab 

 irregular. Abdomen piceous, the back of the 2nd and 3rd blackish ; the 

 petiole four times longer than thick. Apex of scutellum broadly rounded, 

 margined. Wings hyaline, the nervures black. Male. Length, 3 m.m. 



Potaro, May. 



The vertex laterally is irregularly punctured. Antennal scape testaceous, 

 the flagellum densely covered with a white pile. Central lobe of mesonotum 

 strongly, irregularly transversely striated, the lateral more, weakly, irregu- 

 lar'}' striated, more weakly on the outer side. Scutellum closely reticulated. 

 Metanotum widely areolated ; the areola wider than long, obliquely narrowed 

 to a point at ohe ap?x ; it is bordered by 3 areae, of which the apical is larger 

 and wider than the others. 



Spilochalcis coronata, sp. n. 



Yellow, with the following parts black : a line on the top of the antennal 

 scape, the flagellum, the upper half of the clypeus, the hollowed centre of the 

 front, the occiput, the hinder edge of the vertex narrowly to near the eyes, 

 a straight line running down from the middle ocellus and a curved one from 

 the lateral, the basal slope of the pronotum except round the edges, the meso- 

 notum except for two oblique lines in the centre, narrowed towards the apex, 

 on the outer edge of the middle lobe, a broader line on the sides along the 

 tegulae, the inner side with a longish shallow incision ; a pyriform mark on the 

 centre of the scutellum on the basal three-fourths, narrow at the base, be- 

 coming gradually widened to the apex, which is broadly rounded, the meso 

 and metapleurae, an irregular spot on the former before the tegulae, a larger 

 triangular spot below the latter and touching them and a longish spot under 

 the hind wings, with a small triangular spot at the apex above, the meta- 

 thorax except for a triangular spot under the hind wings with a small spot 

 in front, the base of the 2nd segment irregularly and the whole of the others, 

 black. Four front legs yellow ; the hinder yellow with the following parts 

 blaek : the outer apical half of the hind coxae, the base of the mark incised, 

 the apex on the inner side narrowly, a large oblique mark, commencing at 

 the basal tooth and extending to the 13th, reaching near to the bottom of the 

 upper fourth, the base more irregular and more oblique than the apex, the top 

 rounded, a smaller, semicircular spot on the lower part of the apex, the tibiae 



