334 HYMENOPTERA. 



12. MONEDULA ANGULATA. B.M. 



Female. Length 6 lines. Head black ; the face and cheeks 

 with a silvery pubescence ; a spot on the scape in front, the ante- 

 rior margin of the clypeus, the labrum and mandibles, yellow ; 

 the tips of the mandibles black ; the clypeus, sides of the face, 

 orbits of the eyes, a minute spot in front of the anterior stemma, 

 and the antennae, reddish-yellow; four or five of the apical 

 joints of the flagellum black. Thorax black ; the posterior mar- 

 gin of the prothorax, two abbreviated lines on the mesothorax 

 anteriorly, a line on each side passing over the tegulae, a trans- 

 verse interrupted line at the base of the scutelium, the post- 

 scutellum, an arcuate line on the metathorax and the posterior 

 angles, yellow ; the metathorax emarginate its entire width, the 

 lateral angles acute and slightly produced ; the prothorax varie- 

 gated with yellow beneath, the mesothorax with an irregular 

 yellow stripe beneath the wings ; the legs reddish-yellow, striped 

 or spotted with yellow beneath ; wings hyaline, sometimes faintly 

 smoky. Abdomen yellow, with a large angular black spot at the 

 base ; the basal and apical margins of the segments have a nar- 

 row black band, two or three of the apical bands rufo-fuscous ; 

 beneath yellow, with a ferruginous stain in the middle. 



Male. This sex only differs in being brighter coloured, and 

 in having a stout acute tooth, curved backwards, on the second 

 abdominal segment beneath. 



Hob. Brazil (Para; Santarem). 



This species, although much smaller than M. Surinamensis> 

 very strongly resembles it : the acute posterior angles of the 

 metathorax in both sexes, and the tooth on the abdomen be- 

 neath, of the male, at once separate them. 



13. MONEDULA SERICEA. 



Monedula sericea, Spin. Gay's Chili, vL 315. 2. 

 Hal. Chili. 



14. MONEDULA MONTEZUMA. B.M. 



Female. Length 7-3 lines. Head black ; the clypeus, sides 

 of the face, orbits of the eyes, an angulated line in front of the 

 anterior stemma, the scape in front, labrum and mandibles, yel- 

 low ; the latter black at their tips. Thorax black ; the posterior 

 margin of the prothorax, the tubercles, an irregular stripe beneath 

 the wings, two abbreviated lines in the middle of the disk of the 

 mesothorax, a central spot on its posterior margin, a spot on 

 each side of the scutelium, the post-scutellum, and a curved line 



