i\Ir. J, K. .Mallocli on Exotic Muscarit]a\ \\V} 



acrosticlmis sctulose, but no pair well diffcriMitiatcd ; prealar 

 mimite or absent ; postsutural dorso-centrals 4 ; stcrno- 

 plcurals 1:2; scntcllum not haired on sides or venter. 

 Ahtloineu ovate ; basal sternite haired. Fore tibia without 

 a median Ijristh; ; mid-tibia with two or three posterior 

 hristh's ; hind t'omur with bristh-s on apieal half of aiitero- 

 ventral hnrfaoc ; hind tiljia with one or two antero-(ha>al and 

 antero-ventral bristles. tJostal thorn al)scnt. 



Female. — Similar to the male, the frons about one-third 

 of the head-width ; prealar bristle minute. 



Length 7 mm. 



Typi', male, allotype, and ten paratypcs, IJiirnett River, 

 Uneen.sland, 1915, reared from magj^ots in persimmons 

 {T.L.Bancroft). 



This species is not so pronouncedly blue as the preceding 

 three species, but is very closely related to them. It also 

 a|)|)ears to be related to niyrcsccns. Stein, and tihiclla, Stein, 

 though it is impossible to say definitely without seeing these 

 species. From the former it differs in having the wing 

 without costal thorn and the arista much longer-haired ; 

 tibella is Indian and has the tibire yellow ; nigrescens was 

 described from Australia, but is unknown to me. 



Ili'l'ma iridescen.t, sp. n. 



Male. — An aberrant species with very distinctive coloration. 

 Shining black, with dense whitish prninescence. Frons 

 velvety black, orl)its,faei', and cheeks with wliite pruincsccnee; 

 antcinuc and palpi black. Thorax with three broad black 

 vitt?e, which are distinctly shining, the median one slightly 

 subdivided centrally. Abdomen shining ; as the specimen is 

 turned round, the white colour is rei)laccd by black, and vice 

 versa in tlie checkeriugs; the whole surface brassy except 

 apices of tiic tergites, which are violaceous. Legs black. 

 Wings liyaline, a faint cloud in subcostal cell, a large brown 

 spot on inner cross-vein, and one on each extremity of the 

 outer cross-vein. Calyptrre white, margins yellow. Halteres 

 b'ack. 



t^yes almost bare, separated by about oue-tonrth of the 

 head-width ; orbits distinct, narrower than frontalia. with 

 long bristles and fine hairs on their entire length ; face con- 

 cave in profile; autennaj reaching almost to mouth, the third 

 segment broad; arista plumose. Thorax with three pairs of 

 postsutural dors<»-cciitrals, no presutnral acrostichals, a very 

 short prealar, and the sterno-pleurals 1:2. Abdomen 

 narrowly ovate. Fore tibia unarmed at middle ; mid-tibia 



