358 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



at the base 0.73 (0.73) and at the apex 0.36 (0.38) mm. wide. In one 

 specimen sheath is perfectly conical, without lateral edges; this was 

 0.77 mm. long, at the base 0.66, at the apex 0.34 mm. wide and in 

 profile 0.57 mm. high at the base; very probably this is the original 

 form of the ovipositor sheath. In some specimens apex of sheath is 

 bordered with lighter or darker yellowish brown. 



Apical part of ovipositor shining, translucent, testaceous yellow, 

 wide lanceolate in dorsal aspect; apex with tiny dorsal hook. 



Type locality: San Bernardino in Paraguay. 



Types: In Natural History Museum, Vienna, and in the Hungarian 

 National Museum, Budapest. 



Specimens examined: Argentina: C6rdoba, Sierra Cordoba, cf, 

 3 99, January 5-14, Bridarolli, and Santa Fe, Piquete, cT, January 15, 

 1930, Bridarolli (all in Coll. Colegio Maximo de San Jose, San 

 Miguel) ; Corrientes, San Roque, 9, February 1920, J. Bosq, " jT. dorso- 

 fasciata n. sp. det. E. E. Blanchard" (Coll. Blanchard); Chaco, 

 Colonia Benitez, cf , December 7, 1949, R. Goldbach, Jujuy, Sierra 

 Zapla, cf, January 30, 1949, M. L. Aczel, Formosa, Pirane, 9, Decem- 

 ber 29-31, 1948, R. Golbach; and Tucumdn, El Naranjito, 9, February 

 3, 1947, Ares (all in FML). 



Tomoplagia formosa, new species 



Figures 98,p-s; 102, t>; Plate 23, figure 16 



Similar to reimoseri, differing in the characters given in the key 

 (p. 329). 



Female: Length of body 4.5 mm.; wing 4.3 mm. long and 1.9 mm. 

 wide, almost 2.3 times as long as wide. 



Head testaceous yellow, except upper half of frons darker and 

 mesofacial plate whitish dusted ochraceous yellow; 0.85 mm. long, 

 1.34 mm. wide and 1.13 mm. high. Ocellar plate only very slightly 

 raised. Frons at vertex 0.61 and at anterior margin 0.41 mm. broad, 

 and medially 0.60 mm. long, approximately as long as broad at vertex. 

 Antennae and mouthparts testaceous yeUow; maxillary palpi not 

 curved, long-oval with widely rounded apex. Oral margin of meso- 

 facial plate raised and considerably prominent. Postpedicel long 

 oval, 0.27 mm. long and 0.18 mm. wide, 1.5 times as long as wide; 

 setae shining black except for testaceous yellow basal fifth, and more 

 than twice as long as postpedicel. Inferior part of cerebral plate only 

 slightly raised. Eyes in profile 1.32 mm. high and 0.70 mm. wide, 

 nearly 1.9 times as high as wide; inferior part of postcranium in profile 

 0.23, genae below eyes 0.11 mm. wide. 



Cephalic bristles brownish yellow and somewhat flattened ; the usual 

 garniture present and the relation in length almost the usual, but in 

 the specimen examined outer verticals much longer than ocellar and 



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