510 MEMOIRS OF THE CARNEGIE MUSEUM 



Entedon thestis Walker. 



Cirrosjnius thesfk\\a\ker, jNIonogr. Chalc, II., 1839, p. 74, 9. 



Entedon theatis Walker, List Chalc. Brit. Museum, I., 184G, p. 67. — Dalla Torre, 



Cat. Hym., v., 1898, p. 44. 



I'razil : Bahia. 



Entedon ufens Walker. 



Kntedon ufens Walker, Ann. & Mag. Nat. Hist., XL, 1848, p. 184, 9. — 1 )alla Torre, 



Cat. Hyna., V., 1898, p. 45. 

 Entedon rifens Spinola, Gay : Hist.de Chile, Zool, VL, 1851, p. 433, 9. 

 Chile : Isle of Chonos. 



Geuus DEROSTENUS Westwood. 

 Deeostenus alcestas Walker. 



Derostenus alcestas Walker, Ann. & Mag. Nat. Hist., XL, 1843, p. 31, c?. 



Entedon alcestas Walker, List Chalc. Brit. Museum, I., 1846, p. 137. — Spinola, Gay : 



Hist, de Chile, Zool, VL, 1851, p. 437, d'.— Dalla Torre, Cat. Hym., V., 



1898, p. 32. 



Chile : Conception. 



Tribe IV. Pediohnni. 



PARACRIAS Ashmead, gen. uov. 



A genus allied to Acria^i Walker. Form short and robust, the thorax coarsely 

 reticulately sculptured, the head highly polished, impunctate in front. 



The head is very wide, lenticular, wider than the thorax and very thin antero- 

 posteriorly, the occiput concave ; the eyes are large, ovate, the malar space short but 

 distinct ; the antennaj are nine-jointed, with a ring-joint, the funicle four-jointed, 

 the joints oblong oval, briefly peduncled, hairy, the club two-jointed, the last joint 

 represented by a spur ; the thorax is shaped as in Entedon but without parapsidal 

 furrows, the metathorax being produced into a neck at apex, with a delicate median 

 carina ; the abdomen is ovate or conic-ovate, distinctly petiolate, the second seg- 

 ment (first body segment) being very long, occupying most of the surface, the fol- 

 lowing segments very short, apparently capable of being retracted. 



Paracrias laticeps, sp. uov. 

 (Plate XXXIX., Fig. 1.) 



Female. — Length 1.6-1.8 mm. ^Eneous black, the thorax with a greeni.sh tinge 

 above, and coarsely reticulately sculptured, the coxai and legs bluish, the trochan- 

 ters, a spot on the knees, the extreme apex of tibiae, and the tarsi yellowish-white. 

 Wings hyaline, the veins yellowish, the postmarginal vein hardly developed, the 

 stigmal vein verv short, its knob subsessile. The metathorax is contracted into a 



