CG3LI0XYS. 105 



cence; the mandibles, except their base, ferruginous. The scu- 

 tellum produced in the middle of its posterior margin into a short 

 tooth, also a longer tooth at its lateral margins ; the margin of the 

 prothorax, a spot behind the tegulse, and a line at the base of the 

 scutellum with white pubescence ; wings subhyaline, with a fus- 

 cous cloud at their apex. Abdomen shining, and gradually taper- 

 ing to the apex, which is lanceolate ; the ventral apical plate a 

 little longer than the upper one, tapering to a point, and slightly 

 notched at the sides near the apex, which is small and lanceolate. 



Bab. Ega. 



3. Ccelioxys agilis. 



Male. Length 3| lines. — Black. The front, as high as the anterior 

 ocellus, densely clothed with short pale golden-coloured pubes- 

 cence ; a line of white pubescence behind the eyes ; the vertex and 

 thorax above strongly punctured ; the posterior margin of the scu- 

 tellum slightly rounded, with a stout, short, punctured tooth at its 

 lateral angles; wings subhyaline, becoming gradually darker to 

 the apex ; legs ferruginous, and with white pile above. Abdomen 

 shining, finely and sparingly punctured ; the apical margins of 

 the segments impunctate ; the apical segment deeply grooved in 

 the middle, the lateral processes bidentate, there is also a short 

 acute tooth near the base of the segment laterally ; the lateral 

 margins of the segments with white pubescent fasciae; beneath, 

 the fasciae are continuous and broader than those above. 



Hab. Brazil, St. Paulo. 



4. Ccelioxys vigilans. 



Female. Length 5 J lines. — Black, shining, and finely punctured ; 

 legs ferruginous, the pubescent fasciae and markings snow-white. 

 The sides of the face, the cheeks, and a fringe on the anterior 

 margin of the clypeus pubescent. The margin of the prothorax, a 

 narrow line on the mesothorax on each side anteriorly, and run- 

 ning down to the anterior coxae, another line running from the 

 wings to the intermediate coxae, two spots at the base of the scu- 

 tellum, and another behind the tegulae, of white pubescence; 

 the lateral margins of the metathorax fringed with the same; 

 the legs have white pile beneath ; wings hyaline at their base, a 

 fuscous stain in the marginal cell and at the apical margin of the 

 wings ; the scutellum with a short stout tooth at its lateral angles, 

 its hinder margin broadly angular, acute in the middle. Abdomen 

 very finely punctured, with a narrow fascia on the basal margin of 

 the first segment, and also on the apical margin of the other seg- 

 ments, of white pile, the latter widen at the sides and are continuous 

 beneath ; the ventral valve of the apical segment is a little longer 

 than the upper one ; rather wide, notched on each side near the 

 apex, and terminating in a lanceolate process. 



