262 BULLETIN 45, IGNITED STATES NATIONAL MrSEUM. 



Acerota melanostropha Aslini. 

 Monoaitu milatinnlropliu Ashiii., Can. Ent., xix, p. 126; Cress. Sj-n. Ilym., p. 249. 



i 9. Length, 1.5 to 2'"'". Black, subo[)ji(iue, closely punctulate; 

 abdomen, excejit the petiole which is striated, highly polished, impunc- 

 tate; anteiuije brown-black; legs rufous; the posterior femora obfus- 

 cated; sometimes all the coxa). and femora, an<l sometimes the tibi.ne, 

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

 blackish knob. Antennie 10-jointed; in the S the pedicel slender and 

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

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

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

 cence. In the 9 the pedicel is longer tlian the flrst and second funi- 

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

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

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

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

 Scutellum closely punctate, bounded by a carina behind. Metathorax 

 carinated at sides. 



Habitat — Jacksonville, Fla. 



Types in Coll. Ash mead. 



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 separat«> it from A. ceeidomyuc, while 

 its subopaque, closely pun(;tulate vSnrface, the non-striated face, and 

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

 from A. Jloridmia and A. corya. 



Acerota caryae Asbni. 

 (PLxi, Fig. 7, S.) 

 Can Ent., xix, p. 128; Cress. Syn. Hym., p. 249. 



$ 9. Length, 1.5 to 2.1'""'. ^IwvhWk&A.meJanontropha; the thorax 

 smoother and more shining, very faintly microscopically punctate; the 

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

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

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

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

 clar joints are long and slender, cylindrical, while the club joints, excejit 

 the last, are transverse. 



Habitat.— Jacksonville, Fla. 



Types in Coll. Ash mead. 



Described from many specimens. The species varies in size, but is 

 constant in the color of the legs and antennse. 



Tribe II. — Platygasterini. 



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

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



