i52 



as the following two united. Postsciitellum prominent, roundly convex; 

 its apex slightly but clearly widened gradually from the sides to the 

 apex. Metanotum short, its slope steep, its apex densely covered with 

 grey pubescence, its middle not furrowed. The second abscissa of the 

 radius about one-fourth of the length of the third. 



This form differs from the type in the abdomen being deeply black 

 like the head and thorax, whereas in rejecta proper it is paler, brownish 

 to reddish. In the type the apex of the clypeus is distinctly somewhat 

 strongly punctured and has a fovea at the apex. Characteristic of 

 both forms is the distinct transverse keel across the apex of the 

 pronotum extending on to the pleurae. In Saussure's figure this is 

 represented as if it were a spine, the base of the thorax being shown 

 as completely transverse with projecting angles, whereas in the specimens 

 I have seen the angles are rounded. 



P. rejecta has been taken by Prof. J. W. H. Trail at Urucaca, Rio 

 Jurua, Amazons, November 9th. Dr. Trail's specimens have stood for 

 many years bearing in W. F. Smith 's handwriting, the name of P. bicolor 

 Sm. I have no doubt of the latter being identical with rejecta-ct. also 

 Fox, Proc. Acad. Phil: Ss. 1898, 449; Schulz, Sitz. Kgl. Bauer. Akad. d. 

 Wissen. V. 791, and Ducke, Boletim do Museu Goeldi IV, 352. What 

 may be another race of P. rejecta has been taken by Prof. Trail at the 

 Rio Javary, , Amazons, or perhaps it may be a distinct species, for the 

 petiole is distinctly longer than it is in rejecta type. 



Polybia rejecta Fab. race javaryensis Cam. (sp. nov. ?). 



Colouration as in P. rejecta, but with the pleurae, median segment and 

 petiole rufo-testaceous, the wings hyaline, only slightly suffused with 

 fulvous, the apex only very slightly infuscated, the apex of pronotum. 

 a line on the base of postscutellum and on the apex of first abdominal 

 segment, pale yellow. The part between the antennae is broader than 

 it is in rejecta, broader at the apex, flat, a slight furrow in the center 

 above; clypeus smooth, an elongated fovea at its apex, followed by 

 three small ones in a triangle. Abdominal petiole fully half the length 

 of the thorax, its apical half dilated; it is slightly longer than the second 

 segment. Mandibles black. 

 4455 Polybia occidentalis 01. (pygmaea Fab.) 



All the specdmenis sent (probably workers) have the apex and sides of 

 the clypeus bordered with pale yellow, and there is a short narrow line 

 on the face close to the eyes. The yellow mark on the metanotum is 

 large and appears like two oval ones united. These specimens agree 

 exactly with a specimen named for me P. albnpicta Sm. from Demerara, 

 by the late W. F. Smith, and I have no doubt but that the latter is only 

 a synonym of occidentalis. The markings in color vary from pale or 

 whitish yellow to bright orange yellow, the latter being the ease with 

 those from Chiuandega, Nicaragua, and from Obidos, Brazil, i. e. the 

 northern specimens have the color paler than the southern. 



