HYMENOPTERA. 173 



ceous ; beneath, the segments narrowly rufo-testaceous at their 

 apical margins. 



Hah. Brazil (Para and Santarem). (H. W. Bates.) 



2. NOTOCYPHUS TYRANNICUS. 



Female. Length 11-12 lines. — Black: agreeing in form in 

 every particular with N. scBvissimus ; the labrum elongated and 

 narrowed anteriorly, its apex truncate. Thorax smooth and im- 

 punctate; the metathorax truncated, having the verge of the 

 truncation emarginate ; wings dark fuscous, with a violet irides- 

 cence. Abdomen smooth, slightly shining, its apex acuminate. 

 The entire insect has a covering of obscure pile, which has a 

 slight purple tinge on the metathorax ; on the abdomen it is 

 obscure blue. 



Hab. Brazil. 



3. NoTOCYPHUS RIXOSUS. 



Female. Length 7i lines. — Black : of the same form as the 

 two preceding species ; the labrum produced, narrowed towards 

 its apex, which is emarginate; wings dark fuscous; the legs 

 without spines ; the metathorax truncate, the truncation slightly 

 concave, its verge emarginate. Abdomen : the second segment 

 has on each side a large cream-coloured spot, the spots nearly 

 meeting on the disk of the segment ; the two apical segments 

 white above. 



Hab. Brazil. 



Genus 7- PLANICEPS. 



Pompilus, pt., Latr. Gen. Cr. et Ins. iv. 66. 

 Planiceps, Latr. Diet. Class. d'Hist. Nat. (1822). 



1. Planiceps Latreillii. 



Pompilus planiceps, Latr. Gen. Cr. et Ins. iv. 66. 

 Planiceps Latreillii, Va7i d. Lind. Obs. i. 354. 



Dahlb. Hym. Europ. i. 36. 



St. Farg. Hym. iii. 391. 1. 



Hab. France. 



2. Planiceps varipennis. B.M. 



Planiceps varipennis, Perty, Del. An. Art. p. 143. t. 26. f. 9. 

 Spin. Gay's Chili, vi. 371. 1 ; Atlas, t. 4. f. 4 <J $ . 



Hab. Brazil (Rio Tapajos) ; Chili (Coquimbo). 



