212 Mr. E, E. Austen on neio 



trace o£ ocelli ; lastly, in the two co-types of C quinque- 

 maculata, Austeu, ocelli are similarly absent. It would 

 appear, then, that in Cadicera the ocelli are either obsolete or 

 in a vestigial condition^ represented, if present at all, solely 

 by the anterior ocellus. Tlie statement " Pas d'ocelles 

 distincts " in Macquart's diagnosis of the genus is therefore 

 reasonably accurate. 



Pangonia biclausa, Lw., = Cadicera rubramarginata, Macq., 

 and represents a variety with the fourth posterior cell closed. 

 Loew's remarks on his " Varietat ^' (Dipt.-Fauna Siidaf r. 

 p. 91) are sufficient to prove this. Giglio-Tos (Ann. Soc. 

 Ent. Fr., annee 1895, p. 357) is in error in thinking that 

 P. biclausa, Lw., should be referred to the genus Scione, 

 Walk. 



Pangonia brevis, Lw., which also has the fourth posterior 

 cell closed, likewise belongs to the genus Cadicera, Macq., 

 and has nothing to do with Scione, Walk. (<?/. Ricardo, loc. 

 cit. p. 109). Cadicera brevis, Lw., is closely allied to and 

 possibly identical with C. [Pangonia) melunopyga, Wied. 

 There can be no doubt that the closed or open condition oi 

 the fourth posterior cell is a variable character in Cadicera, 



Genus Paxgoxia^ Latr. 

 Pangonia compacta, sp. n. 



5. — Length (6 specimens) 13'5 to 146mm.; width of 

 head 4"6 to 5 mm. ; width of front at vertex just under 

 1 mm. : length of proboscis 6 to 7 mm. ; length of wing 11-5 

 to 12 mm. ; greatest width of wing 4*75 mm. 



Compactly built, thick-set species, ivith short and relatively 

 broad wings, and fourth as ivell as first posterior cell closed 

 before reaching margin ; dorsum of thorax dark olive-yelloio 

 jwllinuse ; first three segments of abdomen ochraceous, re- 

 mainder black or blackish brown, with lighter hind borders; 

 wings tinged with luteons ; femora black or blackish brown, 

 extreme tips and tibia and tarsi buff. 



Head grey pollinose, yellowish on the front^ vertical region 

 brownish ; a shining black median triangle on upper part of 

 front, its base a little above halfway between base of antennae 

 and occipital margin, and its apex directed backwards ; 

 front part of jowls dark brown ; under side of head clothed 

 with yellowish- white hair, upper part of front with short 

 yellowish hair ; palpi brown ; first joint of antennce blackish. 



