25 



small black spot between the scutellum and the base of the wing; humeri, a 

 triangular spot in front of the wings, and the scutellum light yellow, the latter 

 with four bristles. There are one post-acrostical, dorso-central, post-humeral, 

 notopleural and superalar, two post-alar and one sterno-pleural, bristles. Abdo- 

 men dark yellow, shining, with fine black hairs. Halteres and legs yellow. 

 Wings hyaline, clouded as follows : — apex, an irregular band extending from the 

 costa across the posterior cross-vein, a second band from the tip of the first 

 vein across the anterior cross-vein, but not reaching the margin; there is a 

 short band or spot at the costa midway between these, which does not extend 

 beyond the third vein; stigma and base of the wings yellow. Length 3 mm. 

 9 . — Similar to the male, except that the ovipositor which is nearly one-half 

 the length of the abdomen, is dark red with the base and tip black; the lateral 

 margins of the second and third segments are also narrowly margined with 

 black. Length 5 mm. 



Three specimens from Mt. Alto, Pennsylvania, July 22, 1921, 

 collected by T. T. Guyton, were received from A. B. Champlain. 

 Types in the collections of the author and Bureau of Plant Indus- 

 try, Harrisburg, Pennsylvania. 



The shape of the head resembles somewhat that of Gonyglossum 

 wiedemanni Meig. as figured by Dr. Bezzi (Boll, del Lab. di Zool. 

 Gen. e Agraria, Portici, 1910, p. 5, fig. 1). The fewer frontal 

 bristles, shape of the eyes, shorter third antennal joint, pubescent 

 arista, longer palpi and proboscis, and the basal cells of equal 

 length seem to separate it widely from that genus. Except for 

 the position of the anterior cross-veins and the longer palpi and 

 proboscis, it is near to Encina, — hence the generic name. 



Geomyza subdola, sp. nov. Fig. 11. 



<3\ ? . — Head, antennae, palpi and proboscis yellow; arista brown, pubescent; 

 face yellow; a second pair of small, frontal orbital bristles is present. Thorax 

 yellow, subshining, with fine black hairs and three pairs of dorso-centrals ; 

 scutellum yellow, with four bristles; abdomen dark brown, the first and second 

 segments with a very narrow, lighter posterior margin. Legs yellow, halteres 

 white. Wings hyaline, with a brown spot at the end of the second vein, extend- 

 ing from the costa to the third vein; beyond this at the tip of the wing is a 

 whitish spot; costal cells yellow. Length, 2.5 mm. 



Four specimens: holotype, Manomet, Massachusetts, July 27, 

 1905; paratypes, Auburndale, Massachusetts, August 16; Rutland, 

 Massachusetts, July 9, and Dummerston, Vermont, July 14. All 

 collected by the writer and in the collection of the Society. 



This species of Geomyza is quite distinct, in that it lacks the 

 cloudings on the cross-veins. 



