34 ENTOMOLOGICAL SOCIETY 



the segments, the last at base and tip; the apical white spot of each 

 segment is divided by a black median line. The wings are not nearly 

 as heavily marked as in B. sackcni, and the radial sector arises only a 

 trifle in front of the fork of the cubitus. The male appendages are 

 only about twice the length of the last segment, and the male abdomen 

 is not as long as in B. sackeni. 



Several specimens from San Jose del Cabo, Baja Califor- 

 nia (Eisen). 



Ululodes flavistigma, n. sp. 



Face with gray hairs, brown hair above, near eyes, and on vertex ; 

 antennas yellowish, the articulations narrowly black, knob brown ; 

 thorax dark brown or dull black, pleura with gray hair ; abdomen brown, 

 more yellow above, and with a curved dark-brown spot each side on 

 each segment; legs pale brownish, tips of the tibiae black. Wings 

 hyaline, pterostigma yellowish, inconspicuous on both pairs ; venation 

 yellowish brown, the costal veins darker than others, none marked 

 with black. Wings rather long, but not slender; in the fore wing the 

 anal vein does not run into branch of cubitus, but is connected thereto 

 by a cross-vein ; in the hind wings the anal cells are not more than 

 one and one-half times as long as broad (in many species twice as 

 long as broad). 



Expanse 60 mm., width of fore wing 7.5 mm. 



One specimen from Guayaquil, Ecuador. 



A GALL-MAKER OF THE FAMILY AGROMYZIDffi. 



{Agromyza tilia, n. sp.) 



By F. D. CouDEN. 



During the spring of 1907 a correspondent forwarded to 

 the Department of Agriculture some twigs of linden {Tilia 

 am-ericana) showing evidence of a " peculiar disease " for 

 which a remedy was desired. An examination in the Bureau 

 of Entomology showed the presence of small dipterous larvae 

 inside the galls with which the twigs were covered. They 

 were at first supposed to belong to the family Cecidomyiidse, 

 although no one to whom the twigs were shown recalled hav- 

 ing seen any cecidomyiid galls that in any way resembled these. 

 Fortunatly I was able to breed adults from this material, and 

 they proved to belong, not to the Cecidomyiidae, but to the 

 Agromyzidse, a family the species of which greatly differ in 

 their food habits, although there is no previous record of a 

 gall-maker ainong them. 



