THIi CANADIAN ICNTu.MOtOGIST. 2/5 



NEW SPECIES OF CANADIAN SVRIMTIDAE, (DlPTERAj Pt. I. 



U\' C. JIOWAKI) CURRAN^ 

 Orillia, Out. . 



Melanostoma squamulae, new species 



Head and thorax whollx' hlaciv iiilose; s(|uaniae l)]ackish or l)r()\vn, 

 fringed with lilack pile. 



Length, j.^ to 9 mm. -Male. l''ace a little prominent below, very littU' 

 ■coneave between the antcnnal l)a.-<e cind tip (jf tubercle which is more prominent 

 than, and close to the oral margin. Face greenisli black, scarcely pol- 

 linose on the sides. Antennae black, third joint brown, its base reddish; arista 

 brown. Frontal triangle chiefly opa(|ue black. Head and thorax everywhere 

 ■with rather longish black pile. Thorax and scutellum deep greenish black, with 

 a bluish rellection in some lights, on the disc somewhat opaque. Abdomen opaqtie 

 black, the sides of a shining bronze color which is a little broadened on the 

 sides of the second segment, and produced as triangtilar areas on the anterior 

 half of the third and fourth segments; hfth segment greenish bronze colored. 

 Pile on the sides of the abdomen all black, with man\' longer, stronger black 

 hairs, on the disc, shorter, more or less yellowish. Legs black, knees yellow, 

 anterior four tii)iae and tarsi brownish red, all the tibiae with a row of strong 

 hairs in front. Wings distinctly brownish or l)lackish, stigma and subcostal 

 cell luteous. Squamae brown, the fringe of hairs black. 



rciiialc. F^-ont broad, shining greenish black, the l)road transverse de- 

 pression appearing o])a([ue; l)Iack pilose. Thorax chielf}' }-ellowish white pilose, 

 but with longer black liairs intermixed on the dorsum and on the scutellum. 

 The shining portion of the abdomen is aeneous greenish, the shining bands all 

 wider than in the male and the oi^affue on the third and fourth segments is 

 interrupted medianlv, the shining band on' the fourth segment is complete; pile 

 whitish; legs with the tibiae and t.arsi more e.xtensivel}' reddish vellow. Squamae 

 tinged with brownish, with brown fringe. Wings slightly clouded beyond the 

 middle. 



Uolotypc. S . Alloly/'c. 9 . X'ictoria, P.C, .\[)ril and .\hiy, in the Cana- 

 dian National Collection. Ottawa. 



I'arnlyl'cs. ^ / s. Victoria, W.C. in the National Collection and the writ- 

 er's collection. 



The male .seems very disfinct from anv described species and is a very 

 dark api)earing insect. The almost wholl\- shining face is verv distinctive in 

 both sexes, as are the brownish or blackisli wings in the male, and the cl()uded 

 wing in the female, although this dense coloration ma\' not hold good in a long 

 series. The female resembles .1/. obsciinnn. etc., ])ul the shining, less prominent 

 face ancl darkened squamae at once distinguish it from other species. 



Melanostoma chilosia, new six'cics 



-Abdomen ( 9 ) wholly shining: tul)ercle and oral margin verv prominent. 



Length. 6.5 mm. al. 5.5 mm. 9 . Ivice shining black, thinly whitish pol- 

 hnose. leaving the tubercle and a stripe on the cheeks whollv shining; in profile 

 a little produced to the prominent, rather pointed tubercle, below which it is 

 rather moderately and shortly concaw to the not (|uite so ])roiuinent oral tip; 

 face l>roduced very slightl\- downwiircL amerior]\- In-ont deep shining black, 



