Mr, ,1. \\. ^I.illocli on E.mtic MnscaridiP. \W) 



lilnjnrltniny(Lpii lubtrcuHfucii'a (Stciii). 

 Ori;;iiially doscrilicil from llatavia. I have before nic 

 three spcciinciis from Ceylon {Ycrbunj). 



li/ii/nchomy(la>a austrnlis, sp. n. 



Female. — Did'crs from the p;cnotypc in havinpf tlic* thorax 

 entirely yi'llow and the ab(h)men of the same C()U)nr, with a 

 more or less distinct infnscation (U)rsally ; the mctanotnin 

 has a pair of blackish spots. Antcnn;e and palpi yellow. 

 Lc;^8 tawny, tarsi fnscons. Win«5s yellowish, veins yellow. 



Arista with shorter hairs than in j^cnotype, the n|)|)cr series 

 duplicated only at base instead of on almost the entire len{j;th. 

 Thorax as in jjcnotype. Fore tibia withont a median bristle; 

 mid-til)ia with two posterior bristles; hind femur with a few 

 bristles on apical half of antero-ventral snrface ; hind tibia 

 with one antero-dorsal and one antero-ventral bristle. Third 

 wing-vein setnlosc from base almost midway to inner cross- 

 vein ; first posterior cell not so much narrowed as in genotype. 



Length 5-G mm. 



7y;n', Bnrpongary, South Queensland ; three female para- 

 types, Queensland (7\ L. Bancroft). 



This is one of the most distinctive genera in the complex 

 group listed under the generic name Mycbea by Stein. No 

 other genus has the peculiar facial ridge. The genus Mijihea 

 is found only in the Pahearctic and Ncarctic regioiis so far 

 as I have seen. MyiUea cari/iata, Stein, from Mt. Victoria, 

 probably belongs here ; it is imknown to me. 



Australian HelincB. 



For the convenience of students of this family I am 

 presenting a key to the Australian species of Hc/itiu in the 

 material before rac at this time. Tt may be possible to 

 increase the synopsis on some future occasion : — 



1. Thornx and abdomen blue; knobs of halterea 



and lep?* black ; eyes densely hairy ; arista 



with lon^ feparso huirs ; cross-veina of 



wiiijrs nut infiiscuted -. 



Thorax and ahdoiiien nut blue, sometimes with 



acupreous or bronzy tinge, if it is slig^htly 



frruenish the lepra ary tawny ; other 



characters not as above 4. 



•J. Calyptr.T) without fuscous margins; post- 



sutural dor.^o-centrals 3 ; species averaging 



about (5 mm. in len).'th carulesrnis, Stein. 



('alyptm> without fuscous margins; post- 



sutural dorMHOontrals 4 regina, ."p. u. 



t'ulyptrai witli fiiMLiM niMrt/in-* •"i. 



