T. D. A. COCKERELL 35 



Svastra carcaranensis new species 



P'eriiale. Length, about 12 mm., anterior wing, 9 mm.; robust, coal black, 

 with black hair throughout, except that the fourth abdominal segment has a 

 large pure white patch at each extreme side, and the fifth smaller ones, while 

 the third and fourth ventral segments have a long black fringe, which at ex- 

 treme sides gives way to pure white. Mandibles with a long bright orange 

 stripe; clj-peus rugose and punctate; flagellum bright ferruginous beneath, ex- 

 cept at extreme base; facial quadrangle considerably broader than long; 

 posterior disc of mesothorax polished, with onlj^ scattered minute feeble punc- 

 tures; tegulae black; wings dusky hyaline, rather dark; first recurrent nerv- 

 ure meeting second transversocubital ; abdomen shining, without distinct 

 punctures; hind femora dark reddish. 



Carcarana, Argentina (L. Bruner 10). This is easily known 

 from Tetralonia zebra Friese by the venation, and from T. corvina 

 Friese by the color of the antennae. 



Svastra reductior new species 



Female. Like S. carcaranensis, but smaller, length, 10.5 mm., anterior wing, 

 8 mm.; mandibles dark chestnut red in middle, but without any orange stripe; 

 tegulae reddish. Perhaps only a variety of the last, but it looks distinct, and 

 is probaljly adapted to a different flower. Mr. J. C. Crawford mounted the 

 mouth-parts, and the following measurements are in microns: maxillary 

 palpi, joints (1.) 192, (2) 128, (3.) 128, (4.) 64, (o.) 80; labial palpi, joints (1.) 

 1150 long and 224 broad near apex, (2.) 608 long. The measurements of the 

 maxillary palpi are not quite exact, as the palpi do not lie in a plane iircc-isoly 

 parallel with that of the slide. 



Carcarana, Argentina (L. Bniner). 

 Tetralonia gilva Holmberg 



Both sexes from Carcarana, Argentina (L. Bruner, 14, 54). 



Tetralonia brethesi Jorgeasen 



Female. Carcarana, Argentina (Bruner 41). It differs only 

 from the description in the shorter wings, which are 7.5 mm. long. 

 The labrum has a long tuft of rufous hair at apex. Maxillary- 

 ]xilpi slender, six-jointed, no lateral hair-fringes; joints two and 

 t hree subcqual, four and five shorter and subequal (together 250 

 microns), six much shorter (about 80 microns). Paraglosste as 

 long as labial palpi. Its nearest relative is the following species: 



Tetralonia eophila new name 



Tctnilnnld oricntalis Bertoni and Schrotlkv, Zool. .lahrb., 1010, p. 5()9 (not 

 Tetralonia orientalis Friese, 1896, descriljcd nndt^r Euccra). 



TRANS. AM. ENT. SOC, XLIV. 



