172 Journal of the MrmiELL Society [May 



276. Macropterous wings vittate Avitli fuscous 112 L. slos.soxi Ball 



Maciopterous wings not vittate with fuscous 277 



277. Frons conspicuously narrowed Vtetween the eyes; styles broad, suddenly nar- 



rowed at the apex 690 L. favcata Van Duzee 



Frons not much narrowed 278 



278. Genital styles of the male elongate, diverging from e:icli otlier at an angle 



of about thirty degrees 691 L. const ricta Crawford 



Genital styles of the male twisted at the a])ex, ai)ices strongly divergent 692 



L. oshorni Van Duzee 



279. Legs Jineate with darker; genital styles long 693 280 



Legs not lineate with darker 281 



280. Styles slender, wings infuscated 693 L. gillettei Van Duzee 



Styles broad, wings not infuscated, ciliate 694 L. Uneatipes Van Duzee 



281. Genital aperture large; styles lioiizoiital, sinuate and flexed at the tip 695 



L. pctlucida Fabricius 

 Genital aperture small, nearly circular; styles smaller, divergent not hori- 

 zontal 696 L. consimilis Van Duzee 



282. General color of hea<l ami thorax brown or black; frons narrow, black 283 

 Genei'al color of head and thoi'ax yellow to light brown; wings black 



L. lilmani Van Duzee 



283. Styles widely diverging 699 284 



Styles more or less curved, nearly j)arall('l 698 L. wahJeni Metcalf 



284. Styles with basal angles produced 699 /.. basivitta Van Duzee 



Styles with b;isal angles not produced 28.5 



285. Styles not widely diverging, color black L. amlnimcila Van Duzee 



Styles widely diverging, color iluU brown L. incrrta Van Duzee 



286. Styles bifurcate or trifurcate at the apex 702 287 



Styles obtuse at the apex 704 290 



287. Dorsal angles of the male pygofer strongly produced 701 288 



Dorsal angles of the male pygofer not ])rodnced 700 



* L. hutf/ III. st 1/1(1 Crawford 



288. Macropterous wings vittate with fuscous; vertex, pro- and mesoiiotum with 



a broad jiale vitta 113 L. alholiiuosa Fowler 



Macropterous wings not vittate with fuscous; vertex, pro- and mesonotum 

 not vittate with pale 289 



289. Styles terete, not much flattened apically, narrowly arched 702 



L. triloba Metcalf 

 Styles fl.'ittcned apic-illy, l)roadly jirclicd 703 L. (lohardi Metcalf 



290. Head and thorax yellow, bracliyjitcrous wings black, strongly contrasted 31 



291 

 Hea<l and thorax not strongly i-ontr.-istcd in i-olor with the wings 114. . . . 292 



291. Styles together lyre-sh.-iped, apices reflexed ; fions black, carinte pale 704 



L. (ih .rdiiilcri Metcalf 

 Styles obtuse at the apex, diverging 705 L. fulviilorsuiu Metcalf 



