CHKYSOCLAMIS. 279 



middle of the disced areolet. Halteres half-covered. Abdomen oval, 

 pubescent, slightly convex. Legs slender ; hind metatarsi dilated. 

 Male. Eyes contiguous. Fern. Eyes parted. 



1. rostrata, L. s. n. ii. 1004. 1 (1767); Dg. ; Fb. ; Shr. ; Gm. ; 

 Pz. ; Fin. ; Mg. ; Mq. ; Lw. ; Ztt. campestris, Mg. ; Mq. ; Ct. ! 

 b. e. 182. Nigro-aenea, capite antico scutello abdomine pedibusque 

 pallidis, thorace cinereo-quinquevittato, alis subcinereis. Long. 3^-4^ ; 

 alar. 7-10 lin. 



Black. Head tawny in front. Antennae pale red, seated on a 

 tubercle. Thorax seneous-black, clothed with black hairs. Scutellum 

 dark tawny, clothed with yellow hairs. Wings pale grey, with five 

 cinereous stripes, which are most distinct in the female, with a tawny 

 tinge at the base and along the fore border as far as the stigma, which 

 is tawny. Halteres tawny, their knobs partly brown. Abdomen testa- 

 ceous, generally black at the base, the tip, and along each side, and 

 with a black dorsal band, which is frequently indistinct towards the 

 tip ; hind borders of the segments more or less dark. Legs tawny ; 

 a black band round each tibia, a black stripe on each of the anterior 

 tarsi ; hind tarsi black. 



Generally distributed. (E. S. I.) 



Genus XXIV. CHRYSOCLAMIS. 



CHRYSOCLAMIS, Eondani, MSS.* Conors p., Spl. Syrphus p., Fb. ; 

 *Pz. ; Esi.; Mg. ; St. F. et Srv. ; Ct. Musca p., Gm. Mophilus 

 p., LI. Eristalis p., Fb. ; LI. ; Fin.; Ztt. Cheilosia p., Mq. 

 Ferdinandia, Edn. 



Epistoma tuberculatum. Antenna breves, capitis latitudine conjunctim 

 breviores, articulo tertio suborbiculato, articulo quarto dorsali, quinto 

 nudo. Thorax pubescens, setis aspersus. Scutellum convexiusculum, 

 margine non bene determinate. Ala areola subapicali Integra, basi ad 

 apicem gradatim latescente, lobo axillari distincto, venis subcostali et 

 radiali ad marginem disjunctis, vena transversa prabrachiali areola 

 discali media inserta. Pedes simplices. 



Maxillae very short. Palpi longer than the labrum. Antenna 

 jointly shorter than the breadth of the head ; fourth joint dorsal or seated 

 on the back of the third ; fifth naked or pubescent. TJwrax pubescent, 

 with some stiff bristles among the pubescence. Scutellum somewhat con- 

 vex, with an undefined edge. Wrings with the subapical areolet entire, 

 gradually widened from the base outwards ; axillary lobe distinct ; sub- 



* Substituted for Ferdinandia, Rdn., which offends against a canon : see L. Phil. 

 Bot., pp. 236, 237. 



