SYSTEMATIC ACCOUNT. 69 
14. Bluish-black metallic stripes on front; costal index 1.5 or less; wings clear. 
verticis (p. 87) 
Costa and cross-veins clouded; costal index over 2.0................. sororia (p. 87) 
WanpR clear: costal index about 1.8. 2.602% ibid eschew es Medes nana (p. 87) 
Pee NIEGONOUUIMAUMIPOU OF HPOLLEE. «aslo ia ne eee ces OR a ee EE) Rie OR 16 
Wu Wes ap tergt tsa Pict? ccd 2") had Wein Bile EGE 01 i SUMe a goo AA ar Green UE Gl RN Cr ae 29 
16. Front not widened above, largely velvety black; palpi dilated, black; face reced- 
ing; mesonotum dull brown, with two narrow stripes in front. . ‘bilineata (p. 102) 
IN ARY ARIOVIE) Os oh) ee) SOR Gees RUA PEI YI ecole Sets stele CRO ane ee ne ate ik iW 
Rider PA METIC SENET EAN FRCATE PSGR TA GS ESE RS US ho Heh Os satis ola ca la ASN a IE MR ROR I 18 
Acrostieha LD Wainsinele NG TOW neh ee cal pik eke hh Ol eciureel Mebane hie inal ea eh 23 
18. Veins clouded; posterior cross-vein sinuate; prescutellars present. 
(fleca, see above, under 4) 
Veins not distinctly clouded; posterior cross-vein straight...................... 19 
19. First oral bristle more than twice the second. ..: 6.0). ) ee eee ed 20 
Bits orakless ceanrbwice SeCONG, cask ioral ee ae cs Wie coc aa dike oie tee a sein ks 21 
20. Mesonotum gray, with dark spots; dull........................... fasciola (p. 99) 
Mesonotum yellow and brown striped; shining...................... poeyt (p. 76) 
2), ‘Bourth-vem index: 2.5 or over; 1.5 mm; Jong ys 6 6 PE saltans (p. 98) 
Fourth-vein index 2.0 or less; usually 2mm. long.........................0-. 22 
een eae AM OD eRSer ch. aisiatenlee ee Hoi fe sha cton a ns we (earlei—see below, under 28) 
GPE RG VEET ELOyap edi hac aby Ue cline en cers ere gic e PR ees bl pulchella (p. 88) 
23. Mesonotum yellow, with blackish stripes.......................... busckit (p. 77) 
Brenonotiun blackish or brownish 3 slice eee alate kee nila, 40nd aes Bete 24 
24. Mesonotum gray, with many small dark-brown spots......................... 25 
Mesonotum: striped or irregularly spotted 6 5.0.6 oe bs eke views sleet eee a 27 
25. Pteropleura pale yellow; spots between dorsocentral rows largely fused to form 
OO AVEC CULAR I SEEM DES dpi) sye 0 ik ra ee oe ag enans CUM eo cide ee sara tate ramsdeni (p. 102) 
Pteropleura brownish in part; numerous spots between dorsocentral rows....... 26 
. First coxa dark brown below; dark abdominal bands with pale spots on lateral 
ASEAN ee ane ie ties 8 Si tance EY Sak Nu ae gO WEP TA eC ad Pa repleta (p. 99) 
First coxa pale below; pale lateral spots on abdominal segments present. 
mullert (p. 101) 
First coxa pale below; no lateral spots on dark abdominal bands....... hydei (p. 101) 
. Cross-veins slightly clouded; carina subsulcate................... annularis (p. 99) 
SSTORS-UETBS HO EICIGMGE GM titolo Kosta ety aie ica kn: MORN ah Uh Oil uae oe ee 28 
. One prominent oral bristle; carina sulcate......................05. coffeata (p. 98) 
wo largse oral bristles: carma, not suleate ... . 3s. 2 <). 4 slew. aking cee earlet (p. 98) 
Bee CROS BEC ISLE ELSEL TOY MASSES SPORES 6G) Sie sca Goes Bd wh ss rates carats 16 ee olde, Phat isd Hie bee dteh shes oder Mae 30 
FACrOSMEHAL NAICS IVI h LOWS) 0422 oe eieeo nial al havoc og epee win Sa US RO eae & 33 
. First oral bristle over twice second; reddish brown; bristles and branches of 
ATISLRISHOLG sees oe pe APN ea acy elas mead. PERO Tela eae gl ru, ge ly lutzit (p. 74) 
First oral bristle not over twice second; yellowish; bristles and branches of arista 
OSAP STU PMA OE RISA AUG eh Ly RGA RA A A Pet ce TERR AR Re D/A A 31 
. Costal index less than 2.0; fourth-vein index more than 2.0........ willistoni (p. 89) 
Costal index more than 2.5; fourth-vein index less than 2.0................... 382 
aeminine*) abdominal black bands broad.) )).). 0)... snd ae woe ces cardint (p. 78) 
ial: abdominal black bands narrow 6) 2! coke ewe similis (p. 79) 
. Veins distinctly clouded; only one bristle at distal costal break; a row of short, 
stout bristles on inner distal part of first femur............. immigrans (p. 83) 
Without any of above characters, except rarely a faint cloud on posterior cross- 
SUIESENA) SUEUR Datey em VOLE Deo AU MIC Le ha i ieN ed i Cog IR eMC a SS ue 34 
. Prescutellars present; costal index about 2.5; only one prominent oral bristle... 35 
PE VORCHICL Mr reHeOb MPCEDITIAGEU a Foi aici ae a wick are ale arora See Reape Mee rh uly aa Gud 36 
PE CLO WINE CIES tab uiU nnn onmncn: MR HLM. aU ln a gH oll ANU Hes Uk OU ae bromelie (p. 72) 
SEO WI ADECIES PVOR TEBOW ERS 0. ginal rc ele fal. oss faire ualanci be ee UL flore (p. 72) 
. One prominent oral bristle; yellow throughout; bristles yellowish... .. torret (p. 86) 
Bristles black; black or brown, at least on abdomen.......................4.. 37 
. Mesonotum yellow; costal index under 2.5; fourth-vein index over 2.0......... 38 
Mesonotum brown or black; costal index over 2.5; fourth-vein index under 2.0.. 39 
