174 ENTOMOLOGICAL NEWS [April, '12 



in Schizomyia and Asphondylia, and in being a form approxi- 

 mately intermediate between Schizomyia and Cincticornia. 



Bruggmanniella pisoniae n. sp. 



Tbe interesting midge described below was reared May 5, 

 1911, by Mr. W. H. Patterson, St. Vincent, W. I., from stems 

 of Pisonia nig H cans. 



Gall. The affected young stems show irregular elevations about 

 4 mm. long, each marking an oval cell some 3 mm. long. These cells 

 are numerous, 8 or 10 occurring on a piece of stem some 4 cm. long 

 and only about .5 cm. in diameter. 



Larva. Length 2 mm., rather slender, yellowish orange. Head 

 moderately broad, retracted. Antennae short, stout, apparently bi- 

 articulate. Breastbone apparently wanting. Segmentation distinct, 

 the skin nearly smooth; terminal segment greatly reduced, irregularly 

 conical, with a diameter about three-fourths that of the preceding 

 segment and a length a little greater than its diameter. 



Pupa. Length 2.5 mm., moderately stout, yellowish orange ; cephalic 

 and thoracic horns minute though distinct. Abdominal segments dor- 

 sally with a sparse basal row of moderately stout papillae, each with a 

 chitinous apex, the general surface of the abdominal segments with 

 rather coarse, irregular, chitinous plates ; terminal segment with two 

 pairs of submedian, conical processes and minor lateral processes. 



Male. Length 1.75 mm. Antennae as long as the body, sparsely 

 short haired, yellowish brown ; 14 segments, the fifth with a stem one- 

 fourth the length of the cylindric basal enlargement, which latter has 

 a length thrice its diameter, a slight constriction near the basal third; 

 basal, subbasal and apical whorls of short, stout setae and high, irreg- 

 ular circumfili closely resembling those of the male Schizomyia; ter- 

 minal segment produced, with a length about four times its diameter, 

 a marked constriction at the basal third and the apex broadly rounded. 

 Palpi: first and second segments short, irregular, the third one-half 

 longer than the preceding, fusiform. Mesonotum dark brown. Scu- 

 telium and postscutellum apparently yellowish brown. Abdomen 

 rather thickly haired, dark brown, the genitalia fuscous. Wings hya- 

 line, costa dark brown, the third vein uniting with the margin at the 

 apex of the wing. Halteres yellowish. Coxae and femora basally 

 yellowish, the distal portion of femora and tibiae fuscous straw, the 

 tarsi darker; claws slender, simple, evenly curved, the pulvilli about 

 half the length of the claws. Genitalia: basal clasp segment stout, 

 narrowy conical, the apex subacute ; terminal clasp segment subapical, 

 its apex pectinate; dorsal plate short, divided, the lobes narrowly oval, 

 coarsely setose; ventral plate short, broadly and roundly emarginate, 

 the short lobes broadly rounded and thickly setose. 



