282 NEW YORK STATE MUSEUM 



twig of red willow, Salix species. The gall may be only about 2 mm 

 long with but one cell, or 6 or 7 mm long and containing a half dozen 

 or more larvae. It is inconspicuous in all cases and appears like a 

 small, gouty swelling of the twig. It was taken by Professor Cock- 

 erell at Las Vegas, N. M., January 31. The following was drafted 

 from type material kindly placed at our disposal by Professor 

 Cocker ell. 



Gall. Irregular swellings somewhat like aborted galls of 

 Rhabdophaga batatas Walsh on small twigs about one-eighth 

 of an inch in diameter. 



Exuviae. About 1.5 mm long, the cephalic horns long, stout, 

 reddish brown, approximate and tapering to an obtuse apex; antennal 

 sheaths with the basal segment reddish brown, the others yellowish 

 transparent and showing distinctly 18 segmental constrictions. 

 The other portions of the exuviae are semitransparent, the wing 

 cases extending to the third abdominal segment, the leg cases to 

 the fourth; the dorsum of the abdominal segments thickly and 

 uniformly clothed with short, stout spines; terminal segment broadly 

 rounded. 



Female. Length 1.5 mm. Antennae probably as long as the 

 body, sparsely clothed with fine hairs; 18-22 segments, the third 

 cylindric, with a length equal to about three times its diameter, 

 slightly swollen near the basal fourth, tapering. Palpi; the first 

 segment short, stout, subglobular, or in some specimens, prolonged, 

 slender, cylindric, the second a little longer, suboval, the third one- 

 half longer than the second, more slender, tapering. Mesonotum 

 reddish brown, the submedian lines inconspicuous. Scutellum 

 dark reddish brown, pale yellowish apically, postscutellum dark 

 brown. Abdomen a deep fuscous yellowish or dark brown, the 

 segments apparently sparsely clothed with fuscous scales posteriorly, 

 the eighth segment enlarged, subglobular. Wings hyaline, costa 

 light brown. Halteres fuscous basally, yellowish white apically. 

 Legs, so far as evident, yellowish transparent; claws simple. The 

 dorsum of the subglobular eighth abdominal segment with an 

 irregular, triangular, chitinous plate. Ovipositor one-half the length 

 of the abdomen, the basal segment stout, tapering; terminal segment 

 cultriform, heavily chitinized. Type Cecid. 1252. 



Sackenomyia packardi Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2: 290-91 



Both sexes were reared April 15 and 16, igog from irregularly 

 swollen twigs of the long leaved willow, vS a 1 i x L on gi f ol i a. 

 collected by Winthrop Packard at Canton, Mass., March 6, ioco 



and forwarded by Miss Cora 11. Clarke o\ Boston. The latter 

 found the gall near Boston, Mass., November 0, [907. The midge 



(lies in early spring, since galls received from Mr Packard May 4th 



