ON SOME NEOTROPICAL VESPID7E. 153 



pale tesfcaceons ; the flagellum of antenna black ; donsoly covered with 

 a pale pile, which is white on the pleura3, pale fulvous tinted on the 

 mesonotum, and on the abdomen it forms broad apical bands, which 

 have a decided fulvous tinge ; the apex of the second and the following 

 abdominal segments are black. Wings hyaline, tinged with violaceous ; 

 the costal cellule dark fulvous ; the stigma dark rufous. Female. 

 Length (total), 15 mm. 



Kio Purus (Prof. J. W. H. Trail). 



Body opaque, without punctuation ; the sides of the vertex closely, 

 obscurely, obliquely striated. Pronotum rounded, not angled. Centre 

 of mesonotum closely, irregularly, distinctly, transversely striated, the 

 stria? more or less twisted ; on either side is a broad fuscous longi- 

 tudinal line, with a shorter less distinct one at the base ; a little 

 behind the middle is a deep clearly defined longitudinal furrow. Post- 

 scutellum hardly raised above the level of the scutellum ; its apex is 

 bluntly rounded, almost transverse ; the apical slope is short, rounded, 

 it only commencing at the apex, not sloping gradually from the base to 

 the apex, as in Jiavicam. Metanotum widely, deeply furrowed in the 

 middle, the furrow with obliquely sloped sides, i. e. it is deepest in the 

 middle. Mesopleural furrow deep, clearly defined, oblique, curved 

 below, not reaching to the middle. Ocelli •.*, widely separated from 

 the eyes. Front at the antennae raised ; this raised part is obliquely 

 depressed at the base and apex, the basal slope being longer than the 

 lower, and bears a deep furrow in its middle. Clypeus smooth, longer 

 than wide, its apex in the middle broadly rounded, ending in the centre 

 in a blunt black point. Petiole as long as the post-scutellum and 

 metanotum united ; the base is distinctly narrowed, the apex pyriform, 

 clearly separated, abruptly dilated, more so than in diwidiata or rejecta ; 

 the second segment bell-shaped, broadly narrowed at the base, appear- 

 ing therefore wide compared with the apex of the petiole ; it is longer 

 than it is wide at the apex. 



The colour is darker than in any species of Polyhia I have 

 seen, the rufous colour being more tinged with fuscous, some- 

 what as in dark examples of Polistes ruhiginosus ; it is more 

 densely pilose than usual, and the post-scutellum is more rounded, 

 not sloped at the apex ; the metanotal furrow is deeper and more 

 clearly defined, and the apex of the clypeus more broadly rounded, 

 not so distinctly brought to a point in the middle as in the typical 

 species, more, e.g., as in P.filiformis than in P. rejecta. It is 

 related to P. micans, Ducke. 



Among other species of Polyhia taken by Prof. Trail are 

 P. flavicans, F., Kio Jurua ; P. dimidiata, 01. ; P. liliacea, F. ; P. 

 train, Cam., and P. occidentalis, 01., type ; and var. pygmcea, F., 

 Eio Purus. Three species of Synceca were taken on the Eio 

 Purus : azurea, Sauss., surinama, L., and testacea, Sauss. Apoica 

 arhorea, Sauss., was taken on the Kio Purus. 



