HYMENOPTERA. 5 



Labidus Fargeavii, St. Farg. Hym. i. 229, nee Jurine. 

 Westw. Arc. Ent. i. 74. 1. 



Hab. Brazil (St. Catherine). 



2. Labidus Jurinii. 



Labidus Jurinii, Shuck. Ann. Nat. Hist. 1st ser. v. 198. 2 (1840j. 

 Westw. Arc. Ent. i. lb. 3. 



Hab. South America (Demerara) ; Brazil. 



3. Labidus Burchellii. Plate I. fig. 3. 



Labidus Burchellii, Westw. Arc. Ent. i. 74. 2. pi. 20. f. 1. 

 Hab. Brazil (Santos). 



4. Labidus Latreillii. 



Labidus Latreillii, Jurine, Hym. p. 282. 



Shuck. Ann. Sf Mag. Nat. Hist. 1st ser. v. 199. 3 (1840). 

 Westw. Arc. Ent. i. 75. 4. 



Latr. Gen. Crust, et Ins. iv. 123 ; Nouv. Diet. d'Hist. Nat. 

 2nd ed. xvii. 141. 



Hab. Brazil ; Demerara ? ; Cayenne. 



5. Labidus Servillei. 



Labidus Servillei, Westw. Arc. Ent. i. 75. 5. pi. 20. f. 2. 

 Hab. Brazil (Para). 



6. Labidus atriceps. 



Length 7 lines. — Body reddish, pubescent ; head black ; the 

 face anteriorly, and the ridges between the antennae at their 

 base, the mandibles and antennae, rufo-testaceous ; the ocelli 

 of glassy brightness, and placed in a triangle on the vertex. 

 The anterior wings fulvo-hyaline, with the nervures brownish 

 red ; the thorax punctured above, not very closely so ; on each 

 side an impressed line runs from the scutellum nearlv to the 

 anterior margin of the mesothorax ; the posterior tibiae as wide 

 as the femora, narrowed at the base, two-thirds of their length 

 towards the apex of the same width, and narrowed from thence 

 to the base; the basal joint of the tarsi broadest at the base. 

 Abdomen curved ; the peduncle of a subtriangular shape above, 

 concave, with the margins raised, and smooth and shining. The 

 insect covered with a fulvous pubescence. 

 Hab. Brazil (Ega, on the Amazons). 



I have scarcely a doubt of this being the Labidus Latreillii, 

 although in one particular it somewhat differs. In the original 

 description of the ' Nouveau Dictionnaire d'Hist. Nat.,' the tibiae 



