504 MEMOIRS OF THE CARNEGIE MUSEUM 



Tribe II. Omphalini. 



Genus OMPHALE Haliday. 

 Omphale beasiliensis, sp. nov. 



Female. — Length 2 mm. Blue, the thorax with an aeneous tinge ; a dot on the 

 front and middle knees, the extreme apex of all tibise and the tarsi, except the last 

 joint, pale yellowish- white ; mandibles pale ; antennae brown black, pubescent, the 

 scape yellowish. Wings hyaline, bare or nearly, the veins pale, the postmarginal 

 vein hardly developed, shorter than the very short stigmal vein. The abdomen is 

 conically pointed, subcompressed beneath at base, and a little longer than the head 

 and thorax united. 



Brazil : Chapada, in April ; Corumba, in May. 



This species is allied to 0. nigrocyanea Ashm. described from Grenada, W. I. 



Genus CLOSTEROCERUS Westwood. 

 Closterocerus cercitjs "Walker. 



Closterocerus cercius Walker, Ann. & Mag. Nat. Hist., XI., 1843, p. 31, 9. 



Entedon cercius Walker, List. Chalc. Brit. Museum, I., 1846, p. 62. — Spinola, Gay : 



Hist, de Chile, Zool., VI., 1851, p. 435, 9.— Dalla Torre, Cat. Hym., V., 1898, 



p. 34. 



Chile : Conception. 



Closterocerus pelor Walker. 



Closterocerus pelor Walker, Ann. & Mag. Nat. Hist., XL, 1843, p. 185, cf. 



Entedon pelor Walker, List. Chalc. Brit. Museum, I., 1846, p. 62. — Spinola, Gay: 



Hist, de Chile, Zool., VI., 1851, p. 436, d".— Dalla Torre, Cat. Hym., V., 



1898, p. 42. 



Chile : Isle of Chonos. 



Closterocerus xenodice Walker. 



Closterocerus xenodice Walker, Ann. & Mag. Nat. Hist., X., 1843, p. 273, 9d^. 



Entedon xenodice Walker, List. Chalc. Brit. Museum, I., 1846, p. 62. — Spinola, Gay : 



Hist.de Chile, Zool., VI., 1851, p. 436, 9 d'.— Dalla Torre, Cat. Hym., V., 



1898, p. 45. 



Chile : Valdivia. 



Tribe III. Entedonini. 



UROENTEDON Ashmead, gen. nov. 

 This genus is based upon one of the most striking yet discovered in the sub- 

 family Entedoninse. It is easily recognized by the long, compressed abdomen which 

 terminates in a long ovipositor, and has the hypopygium prominent, acutely plow- 



