SYNOPSIS OF NORTH AMERICAN SYRPHID^. 87 



lie green black, nearly bare. Scatellum wholly light yellow. Abdo- 

 men shining black with narrow yellow bands; the first rather narrowly 

 interrupted ; the second and third straight, entire, not appreciably nar- 

 rowed at the margin; fifth and sixth segments with narrow yellow 

 hind margins. Legs yellow ; the hind pair, except the base and tip of 

 femora and the base of the tibiaj, brown or blackish. Wings hyaline, 

 subcostal cell light yellow. 



One specimen, near the base of Mount Washington, August. 



Syrphus simplex. 



Siir2)lius simjilex luoey^ , Wien. Eut. Monatschr., v, 40; Centiir, vi, 4o. 



Habitat. — Cuba (Lw.), San Domingo! 



$ . Length S.S™'". Steel blue, light yellow pilose, antennae and legs 

 bhicU, base of front and middle tibise and the knees of the hind legs 

 lutescent. Basal half of the wings pure hyaline, tip blackish-cinereous. 



Head blackish-steel blue, shining. Face white pollinose, the small 

 tubercle bare. Eyes bare. Antenna' black, third joint ovate. Front 

 brietiy black pilose on each side, with a marginal white pollinose stripe 

 extending from the middle of the front to the face. Thorax and scutel- 

 lum steel blue, shining, clothed with whitish pile. Abdomen whitish 

 l)ube8cent, steel blue, each segment on the posterior part obscure, 

 opa(iue. Venter steel blue, shining. Legs black; base of front and 

 middle tibiae and the knees of the hind pair lutescent, hind metatarsi 

 subincrassate. Tegulse whitish. Halteres sordid lutescent. Wings 

 hyaline, the apical half blackish cinereous, stigma blackish fuscous, 

 third longitudinal vein nearly straight. 



One specimen, San Domingo (G. F. Frazar). 



Syrphus quinquelimbatus. 



Sijrphus quinquelimbatus Bigot, Auu. Soc. Ent. Fr., 1884, 91. 



Habitat. — California (Bigot). 



9 , Long. 9 mill. Antennis nigris, basi, iiiferne, fulvo notatis; fronte 

 et facie pallid e Jiavis, ])aicc fusco tomentosis, vittis medianis nigris pictis, 

 thorace obscure niteoite, scutello testaceo, flavido tomentosis; ealyptris et 

 halteribus palidi testaceis; ahdomine nigro, vittis transversis quinque 

 JIavidis, prima interruptd, quartd et quintd angustis, cunctis ad apicem 

 segmentorum locatis; pedibus pallide fiilvis, imd basi, tarsis apice lati, 

 nigris^ femoribus posticis latefusco annnlatis, tibiis posticis, tarsis, fiiscis ; 

 aiis Jtyalinis, macula stigmaticali longd, obscure testaced. 



Antennes et chete noiratres, 3® segment assez court, ovalaire et teint 

 en dessous, a la base, d'un pen de fauve ; front jaunatre avec une bande 

 mediane noire elargie a ses deux extremites, convert, ainsi que la face, 

 d'un court duvet clairseme uoiratre, cette derni^re d'un jaunatre clair 

 avec la bande mddiane et les joues brunes ; thorax d'un noir peu luisant 

 a villosite jaunatre ainsi que I'ecusson lequel est testa ce ; cuillerons 

 blancs, hordes de jaunatre, balanciers testaces; abdomen noir, villosite 

 jaunatre assez dense, sise de chaque cote de la base, 2** segment avec 



