262 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Aceiota melanostropha Ashin. 

 Monocrita melanoalrophu Asbia., Can. Eut., xix, p. 126; Cress. Syn. Hym.,p. 249. 



$ 9. Length, 1.5 to 2""". Black, subopaque, closely puiictulate; 

 abdomou, excei)t the petiole which is striated, highly polished, impunc- 

 tate; auteniiie brown-black; legs rufous; tlie posterior femora obfus- 

 cated; sometimes all the coxse and femora, and .sometimes the tibite, 

 fiiscous. Wings hyaline, the submurginal vein ending in a fuscous or 

 blackish knob. Antcnnte 10-jointed; in the $ the pedicel slender and 

 much shorter than the first funiclar Joint; first and second funiciar 

 joints stout, the second the shorter; third slenderer, about twice as 

 long as thick; all the joints are covered with a fine, whitish pubes- 

 cence. In the $ the pedicel is longer than the first and second funi- 

 clar joints, the club joints transverse. Head transverse, closely punc- 

 tate, obliquely narrowed behind the eyes; the face shortened, its width 

 befeween the eyes longer than from the vertex to the mandibles. Tho- 

 rax trilobed, the middle lobe with two short indistinct lines anteriorly. 

 Scutelhim closely r)unctate, bounded by a carina behind. Metathorax 

 carinated at sides. 



Habitat — Jacksonville, Ha. 



Types in Coll. Ashmead. 



Described from several specimens. The species was wrongly de- 

 scribed under the genus Monocrita. The much longer funiclar joints, 

 sculpture, and color of the legs separate it from ^4. cecidomyue, while 

 its subopaque, closely punctulate surface, the non-striated face, and 

 the impressed lines on the middle lobe of the niesonotum separate it 

 from A. floridana and A. carycv. 



Acerota caryee Ashm. 

 (PI. XI, Fig. 7, <?.) 

 Cau. Ent., xix, p. 128; Cress. Syn.'Hyra., p. 249. 



$ 9. Length, 1.5 to 2.1"'". ^l\n-\\\\\iQ. A.mehinostropha; the thorax 

 smoother and more shining, very faintly microscopically i)unctate; the 

 head much as in melanostropha, but the face always with a deep median 

 furrow; antenme, except the 4-jointed club, and the legs, except the 

 posterior coxai, wholly brownish-yellow; the second abdominal seg- 

 ment finely striated at base above; the pedicel and first and second funi- 

 clar joints are long and slender, cylindiical, while the club joints, except 

 the last, are transverse. 



Habitat. — Jacksonville, Fla. 



Types in Coll. Ashmead. 



Described from many specimens. The si)ecies varies in size, but is 

 constant in the coloi- of the legs and antennie. 



Tribe II. — Platvgasterini. 



To this tribe belong all species with veinless wings. The genera are 

 more numerous and much more difficult to separate than in the Ino- 



