132 THE ENTOMOLOGIST. 



narrower than the second posterior cell, its stem over half the 

 length of the cell. Supernumerary cross-vein slightly nearer the base 

 of the wing than the mid cross-vein. Hind cross-vein shghtly more 

 than its own length distant from the mid cross-vein. Halteres 

 with ochreous stems and knolls, the latter bearing ochreous scales. 



Length 4-5-5 mm. 



Ohservations. — Described from two somewhat damaged fe- 

 males. It is closely related to Cidicelsa westralis, n. sp., but the 

 uniform thorax separates it from this species. It also comes 

 near Cidicelsa togoi, Theobald, but has ochreous banding on the 

 abdomen, whereas the latter has snowy white bands. 



Dr. Cleland's notes on this species are: — (1) "King's Park, 

 Perth, and in closet, Perth. Vicious. Bites by day and all 

 the year round." (2) " Port River swamps, Adelaide. Bites 

 severely, raising weals even in strong sunlight in the open and 

 with a moderate breeze." 



The dates of capture were March 28th, 1907, and January 26th, 

 1906, respectively. 



Cidicelsa similis, n. sp. 



Thorax uniformly clothed with golden brown scales, except just 

 before the scutellum where they are paler. Scutellum with ochreous 

 scales. Abdominal bands white laterally, and ochreous on median 

 area. Tarsal bands snowy white. 



$ . Head black with creamy narrow curved scales, black up- 

 right forked scales, and flat scales in black and white patches. 

 Palpi rather long, black with white apical scales, and a few white 

 scales at the juncture of the second and third segments. Proboscis 

 long. 



Thorax black, clothed with uniform golden brown scales, which 

 become paler before the scutellum. Scutellum with ochreous narrow 

 curved scales. Pleurae and prothoracic lobes with ochreous scales. 

 Abdomen basally banded, bands white laterally but ochreous on 

 median area. Apical segments not mottled, and without apical 

 banding. Femora not mottled, dark scaled above, pale scaled below 

 on basal half. Knee spot ochreous. Tarsi with well-defined white 

 bands on most joints. Fore legs with three apical tarsi unhanded. 

 Mid legs with two apical tarsi unhanded, and hind legs with apical 

 tarsus unhanded. First fork cell longer and distinctly narrower 

 than the second posterior, its stem not over half the length of the 

 cell. Hind cross-vein almost one and a half times its own length 

 distant from the mid cross-vein. Halteres with almost white stems, 

 knobs blackish with white scales. 



Length 4-5-5 mm. 



Observations. — Described from a single perfect female. This 

 is evidently very closely related to Cidicelsa uniformis, n. sp., but 

 can easily be separated by possessing white lateral scales to the 

 abdominal bands. The halteres also are quite distinctive. 



"Mt. Lofty, South Australia, January 9th, 1906. Caught 

 in day by disturbing bushes, &c., near stationary pool of water. 

 Bite severely." 



