-46 PROCEEDINGS OF THE NATIONAL MUSEUM, vol.61. 



21. Wings hyaline ; po.sterior femora black ; tegulae black or dark brown__ 22. 

 Wings slightly fuliginous; posterior femora mostly testaceous, occasionally 



somewhat infuscated along edges 23. 



22. Stigma miicolorous 20. plutellae, new species. 



Stigma with a pale spot at base 21. coactus Lundbeck. 



23. Scutellura coarsely confluently punctate and opaque ; tegulae brown ; first 



dorsal abdominal plate parallel-sided to near the apex, from which point 



it narrows suddenly 22. quintilis Viereck. 



Scutellum flat, with scattered, well-separatetl punctures, somewhat shining; 

 tegulae yellow, rarely pale brown ; first dorsal abdominal plate narrowing 

 more gradually from base to apex 23. feltiae, new species. 



24. Radius perpendicular to anterior margin of stigma and much longer than 



first intercubitus ; second dorsal abdominal plate somewhat roughened- 25. 



Radius always strongly directed outward, and usually hardly as long as 



first intercubitus ; dorsum of abdomen beyond first segment wholly smooth 



and polished 26. 



25. Mesopleural furrow distinct, crenulate; second dorsal abdominal plate very 



weakly roughened posteriorly ; third abdominal tergite smooth and pol- 

 ished ; face very shallowly punctate and shining. 



24. latistigmus, new species. 

 Mesopleural furrow wanting ; second dorsal abdominal plate finely granular 

 on basal half, distinctly striate on posterior half, opaque; third tergite 

 alutaceous, opaque ; face closely sharply punctate and dull. 



25. striatus, new .species. 



26. Metacarpus as long as stigma ; all coxae, except extreme base of posterior 



pair, testaceous ; first dorsal abdominal plate narrowing very strongly to 

 apex ; second plate triangular; second and third abdominal tergiles largely 



testaceous; length 2.5 mm 26. varicolor Viereck. 



Metacarpus not as long as stigma; otherwise not comlnaing all the above 

 characters 27. 



27. Tegulae and wing-bases black ; stigma without a distinct pale spot at base ; 



disk of scutellum with a pittetl groove just inside the sharp lateral 

 margins ; abdomen entirely black above and below ; all coxae black, 



27. scutellatus, new species, 



Tegulae and wing-bases yellow; stigma always with a large pale spot in 



the membrane at base; disc of scutellum normal; abdomen often partly 



testaceous; fore and middle coxae, and often the posterior pair partly, 



yellowish 28. 



28. Parapsidal grooves VN'hoUy wanting 29. 



Parapsidal grooves rather well indicated 31. 



29. Posterior coxae black ; length not over 2.5 mm 30. 



Posterior legs, including coxae, testaceous ; abdomen v/ith a broad testaceous 



band covering second and third tergites 28. laticinctus, new species, 



30. First dorsal abdominal plate as broad at apex as at base ; second and third 



abdominal tergites and the venter of abdomen usually testaceous. 



29. confusus, new species. 



First dorsal abdominal plate distinctly narrower at apex than at base; 



abdomen black, except the broad membranous margins along the two basal 



plates, which are pale 30. bradleyi, new species. 



31. Mesopleurae mostly polished; posterior coxae reddish-black; dorsum of 



abdomen reddish-black; venter blaclc; length less than 3 mm. 



31. montanus, new species 



