208 



dilatata Felt, and P. johnsoni Felt, especially the last, from which 

 it is most easily separated by the less dilated, somewhat fusiform 

 terminal clasp segment and by the heavily chitinized, bifurcate 

 barpes. 



Male. — Length 1.5 mm. Antennae twice the length of the body, sparsely- 

 haired, fuscous yellowish, the stems whitish, transparent, presumably 16 

 antennal segments, the fifth with a stem twice the length of the subcylindrical 

 basal enlargement, which latter has a length nearly twice its diameter; terminal 

 segments missing; palpi, first segment subquadrate, the second a little longer, 

 rather broad, the third apparently short, with a length less than one-half 

 greater than its width, the fourth about three times the length of the third, 

 somewhat dilated; mesonotum dark brown; scutellum and postscutellum 

 fuscous yellowish; abdomen somewhat darker; halteres yellowish transparent; 

 coxae and femora pale straw, the remainder of the legs dark straw; claws 

 slender, unidentate; the pul villi about half the length of the claws; basal clasp 

 segment rather short, broad, terminal clasp segment dilated, roundly trian- 

 gular; harpes heavily chitinized and with strongly divergent, curved processes 

 apically. 



Type— Cecid. 1821, N. Y. State Museum. 



Hormomyia fulva, sp. nov. 

 This species approaches rather closely H. caudata Felt, from 

 which it is easily distinguished by the distinctly longer, more 

 constricted, flagellate antennal segments and by the shorter 

 ovipositor with wider lobes. The specimen was labelled Sher- 

 born, Mass., August 25, 1912, E. J. Smith, and was received from 

 C. W. Johnson of Boston. 



Female. — Length 6 mm. Antennae about one-half the length of the body, 

 rather thickly haired, pale yellowish, probably 14 segments, the fifth with a 

 distinct subbasal stem with a length about one-half greater than its diameter, 

 and an apical stem with a length a little greater than its diameter; basal 

 enlargement subglobose, with a length nearly one-half greater than its diameter; 

 the distal enlargement cylindrical, with a length nearly twice its diameter; 

 moderately low circumfili occur on the basal enlargement, and basally and 

 apically on the distal enlargement; terminal segments missing; palpi, first 

 segment probably short, subquadrate, the second cylindrical with a length 

 about twice its diameter, the third long, slender, with a length fully seven 

 times its diameter; mesonotum greatly produced over the head, fuscous 

 yellowish; scutellum yellowish; postscutellum brownish yellow; abdomen 

 yellowish brown; halteres pale yellowish; coxae and femora mostly pale straw; 

 tibiae and tarsi dark straw; claws moderately long, stout; the pul villi apparently 

 about half the length of the claws; ovipositor short, with a length approxi- 

 mately one-sixth that of the abdomen, the lobes narrowly oval, with a length 

 about four times the width. 



Type.— Cecid. 1824, N. Y. State Museum. 



State Museum, 

 Albany, N. Y. 



