CIIRYSOCLAMIS. 279 



middle of the ducal 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. ; EIn. ; ^Mg. ; INIq. ; Lw. ; Ztt. — cmnjjestris, Mg. ; Mq. ; Ct. ! 

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

 pallidis, thorace cinereo-quinquevittato, alls subciuereis. Long. 3^-4|^ ; 

 alar. 7-10 lin. 



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

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

 dark tawny, clothed with yellow haix's. 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. 



Geuerally distributed. (E. S. I.) 



Genus XXIV. CHRYSOCLAMIS. 



CiiRYSOCLAMis, Eondaui, MSS.* C'o??o/?s p., Spl. Si/rphns \^.,'Eh. ; 

 Pz. ; Rsi. ; Mg. ; St. F. et Srv. ; Ct. Mtisca p., Gm. ElopUllus 

 p., LI. Emtalis p., Eb. ; LI. ; Eln. ; Ztt. Cheilosia p., IVIq, 

 Ferdinandia, Rdn. 



Epistoma ttiherctilatum. Antennce breves, capitis latitudine conjunctim 

 breviores, articiilo tertio suborbiculato, articulo quarto dorsali, qitinto 

 nudo. Thorax pubescens, setis aspersiis. Sctitellum convexiusculuni, 

 margine non bene determinato. Alee areola subapicali Integra, basi ad 

 apicem gradatim latescente, lobo axillari distincto, venis subcostaU et 

 radiali ad marginem disjunct is, vena transversa prabrachiali areolce 

 discali media inserta. Pedes simplices. 



Maxilla3 very short. Palpi longer than the labrum. AntennfB 

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

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

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

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

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



* Substituted for Ferdinandia, Kdii., which offeuds against a canou : see L. FhLl. 

 Bot., pp. 236, 237. 



