XII, D, 3 Bezzi: Studies in Philippine Diptera, II 135 



cence ; the posterior part of first segment and the two following 

 segments almost entirely occupied by a dark brown transverse 

 band, which is sometimes interrupted in the middle, forming 

 two broad blackish spots on each segment. Ovipositor broad, 

 flattened, entirely reddish; venter blackish brown. Legs yel- 

 lowish, coxse reddish, tibiae darkened, tarsi blackish at end; 

 apical spur of middle tibise black. 



Wings with a uniform yellowish tinge, which becomes brown- 

 ish along the fore border from base to apex, where it is dilated 

 to form an elongate spot, which surpasses the third longitudinal 

 vein, reaching almost the fourth vein ; third and fourth longitu- 

 dinal veins slightly converging toward the end, the first posterior 

 cell being, therefore, a little narrowed outwardly; anterior cross 

 vein distinctly before the middle of the very long and narrow 

 discoidal cell^ apical cross vein of the second basal cell only a 

 little more oblique than that of the anal cell, the last being 

 perpendicular to the anal vein. Last two sections of the fourth 

 longitudinal vein practically of the same length, second section 

 considerably shorter than the third. 



Luzon, Laguna, Mount Maquiling (Baker) . 



174. Elassogaster plagiata sp. nov. 



A species with the facies of a Stenopterina, with complete 

 thoracic suture, and with a small, oblique, anterior cross vein 

 (almost as in Elassogaster trivittata) , distinct from any other 

 species of its genus because of the broad fuscous patch on wings 

 in front of the posterior cross vein. 



Female. — Length of body, 10 millimeters; of wing, 8. Head 

 black, opaque, and deep black on frontal band, gray-dusted on 

 face, and shining bluish on occiput, which shows a whitish-dusted 

 border near the eyes. Vertex gray with two equal parts of 

 strong, but short, black bristles; no other bristles on head. 

 Frons with short shining yellowish pubescence along the middle 

 line and above the antennae. Antennae inserted a little below the 

 middle of eyes, shorter than the face; the two basal joints dark 

 reddish brown ; the third black, gray-dusted, obtuse at end, with 

 a basal dark yellowish arista, which is shortly plumose on the 

 basal two thirds. Preelabrum transverse, shining black; palpi 

 and proboscis black. 



Thorax and scutellum dull bluish black, the pleurae a little 

 shining and a little greenish, the stemopleura and a transverse 

 band gray; bristles black, the scutellum with the apical pair 

 alone. Mesophragma shining black. Halteres whitish, with 

 the stalk black near the base. Abdomen of the same color as 



