Vol. XXvi] ENTOMOLOGICAL KEWS 21 



47 Costa with ere« cilia 48 



Cotta without erect cilia .^.^^ 49 



48 Second joint of fore tarsi shorter than any of the following joints. 



(U. S.) rnmndtu Wied. 



Second joint loni^r than any following. (Mex.) ....kirtipes Aid. 



49 Middle metatarsi with erect cilia above. (Mex.) ciKites Aid. 



Middle metatarsi not so ciliated 50 



50 Middle tibix bbclc ' 5I 



Middle tihix yellow $M 



51 All tihix Mack, fore tarsi with second and ti ,a|, 



fourth and fifth longer but also sttbeqnal. * 



fUieormis Aid. 

 Fore tibiv yellow, last four joints of fore tarsi regularly decreas- 

 ing in length. (U. S.. W. T.) ckrysopranut Walk. 



5a Hypopygium large, its appendages large, curved, foroeps-like : 

 abdometi with two long wavy bristles at tip. (Mex.) 



foreifahu Aid. 



Ilypopygium small or only aoderately krgc; abdoacn without 



long bristles at tip S3 



53 Hind tibt« and ^ • " v (HaytL) Alrfu/M Bigot 



Hind tibia: and ) ited. (Ifcx.) ^rfurems Aid. 



54 Wings with « S5 



Wings wholi. ^ 



55 Antenrae yellow. (Mex.* BrastL) .busSaris Wied. 

 Antennx black SS 



56 Hyaline space between the croas-bands reaching forward to the 



second vein 57 



Hyalme space not reaching beyond the third vein SO 



57 First joint of the fore tarsi white at tip. the following joints black. 



fourth fringed with black hair above. (Mex.) ..imtercephu Aid. 

 Fore tarsi plain, gradually infuscHcd S8 



58 Fore coxc black. (Mex.) ^fmdftr Aid. 



Fore coxje yeUow. (Mex.) flmieosu AkL 



59 Seoood and third joints of fore tarsi atoot, swoUeii, bristly. (Mex.) 



citmpts AkL 



Fore tarsi plain or only bristly 60 



/k) Fore coxK green. (La.) viriiUiMtm Aid. 



i'i>re cox« pale (■ 



<)i Mi.l<!lr meutarsi with a row of erect ciHa on the front surface. 



(T S.) *fo*rr Loew 



Mi<l<llo metatarsi plain 63 



(>.> Middie tibic with a row of bristles on the front surface. (U. S.) 



»^ho Say 

 Middle tibi« with only scattered bristles. (Ga., Fla.) .furcalu4 V. D. 



