510 MEMOIRS OF THE CARNEGIE MUSEUM 



Entedon thestis Walker. 



Cirrospilus thestis Walker, Monogr. Chalc, II., 1839, p. 74, $. 



Entedon thestis Walker, List Chalc. Brit. Museum, I., 1846, p. 67. — Dalla Torre, 

 Cat. Hym., V., 1898, p. 44. 



Brazil : Bahia. 



Entedon ufens Walker. 



Entedon ufens Walker, Ann. & Mag. Nat. Hist., XI., 1843, p. 184, 9. — Dalla Torre, 



Cat. Hym., V., 1898, p. 45. 



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



Chile : Isle of Chonos. 



Genus DEROSTENUS Westwood. 



Derostentjs alcestas Walker. 



Derostenus alcestas Walker, Ann. & Mag. Nat. Hist., XI., 1843, p. 31, d^. 



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



Hist, de Chile, Zool., VI., 1851, p. 437, c^.— Dalla Torre, Cat. Hym., V., 



1898, p. 32. 



Chile : Conception. 



Tribe IV. Pediohiini. 



PARACRIAS Ashmead, gen. nov. 



A genus allied to Acrias 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 antennae 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. nOV. 



(Plate XXXIX., Fig. 1.) 



Eemale. — Length 1.6-1.8 mm. ^neous black, the thorax with a greenish tinge 

 above, and coarsely reticulately sculptured, the coxse 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 very short, its knob subsessile. The metathorax is contracted into a 



