72 ENTOMOLOGICAL NEWS [Feb., '15 



Scatella intermedia n. sp. 



Black. Front twice as broad as long, shining, with a metallic green 

 tinge and slightly gray pruinose. Face half as broad as vertex, as broad 

 as long, protruding most at oral margin for about half the width of 

 eye, entirely grayish or whitish with slight brown tinge above and later- 

 ally ; 3 to 4 laterally-inclined bristles each side, the lowest of which is 

 much longer than the next one, also a short ventrally-inclined bristle at 

 lateral angle ; setulae distinct and numerous ; oral margin ciliate anter- 

 iorly. Cheeks half the width of antennae with distinct bristle. Third 

 antennal joint slightly longer than broad, broadly rounded apically; 

 arista twice the third, nearly bare. 



Mesonotum somewhat shining, more or less obscured by brown dust 

 which becomes more bluish-gray at margins ; anterior d. c. and sutural 

 acrostichals present; no postacrostichals. Scutellum concolorous, flat, 

 apex rounded. Pleurae more grayish below ; metanotum bluish gray. 

 Halteres yellow. Abdomen elongate, shining, brown and gray pruinose ; 

 segment 4 of male one and one-half times as long as 3. Legs more or 

 less brown and gray pruinose. Wings blackish-tinged, with five diluted 

 spots of same arrangement as in stagnalis Fall. ; costal sections 3 and 4 

 subequal; ultimate section of vein 4 slightly longer than preceding. 

 Length 3 mm. 



Holotype.— $, Milbrae, Salt marsh, San Mateo Co., Cali- 

 fornia. March 20, 1908. (Cresson). [Type No. 6073. A. N. 

 S. P.] 



Paratypes. — 2 5,2$, with same data. 



This may be pentastigma of Thomson, but only comparison 

 of the types will make this certain. The wing spots are some- 

 times very faint. The gray coloration of the thorax and ab- 

 domen varies to some extent in its extensions. Belongs to the 

 small group having both distinct anterior dorso-centrals and 

 sutural acrostichal bristles present. 



Scatella intermedia var. obscuriceps n. var. 



Generally darker, with face dark brown or cinnamon-colored and 

 wing spots more distinct. 



Holotype.— S, Swarthmore, Pennsylvania. April 18, 1909. 

 (Cresson). [Type No. 6074. A. N. S. P.] 



Paratype .— i S , with same data. 



I cannot consider this a distinct species although no inter- 

 gradents have been seen. 



