138 THE CANADIAN ENTOMOLOGIST. 



border scarcely dotted with fuscous. Long. corp. 0.26. Long. al. 0.26 

 inch." Loew. Mon. Dip. N.-A, Vol. L p. 82. 



I received a collection of these galls made at Carberry, Manitoba, by 

 W. G. A. Brodie in Nov. '82, from the upper part of the stems and 

 branches of a species of Solidago very common on the open prairie. 

 These galls were unusually large, measuring 27-30 mm. in diameter. The 

 producers, Eurosta soHdagi?iis, Fitch, began to come out at Toronto 

 May 2, '^T), and parasites, Eiirytoma gigaiitea, Walsh, a few days later, 

 and also a parasite beetle bred from an Eurosta pupa case and identified 

 by Dr. Hamilton, of Allegheny, Pa., as Mordellistena nigricans, Melsh. 

 A collection of these galls made at Crowfoot Crossing, N. W. T., by 

 W. A. Ducker, D. L. S., Nov. 'Zt^, reached Toronto Dec. 25, 'Zt,, gave 

 producers and parasites May 22, '84. A collection made 50 miles north 

 of Crowfoot Crossing, N. W. T., by W. A. Ducker, D. L. S., Dec. '83, 

 producers, E. solidaginis, Fitch., came out at Toronto May 25, '84-May 

 29, '84; parasites, E. gigantea, Walsh, May 27, '84-May 31, '84; also 

 three specimens parasitic beetle. A collection made 50 miles south of 

 Crowfoot Crossing, N. W. T., by W. A. Ducker, D. L. S., Dec. 'Zt^, gave 

 at Toronto the usual proportion of producers and parasites, E. gigantea, 

 Walsh, but the parasitic beetles were numerous. A collection of 87 galls 

 made at Oak River, Manitoba, by Mr. Harry Leigh, in the fall of '84, 

 gave 50 specimens E. giga?itea, Walsh, at Toronto, June i, '85-June 6, 

 '85. No producers nor beetles. A collection made at several points 

 between Clearwater, N. W. T., and Portage la Prairie, Manitoba, by W. 

 A. Ducker, D. L. S., in August, '87, arrived at Toronto during Industrial 

 Exhibition, '87, gave producers June 4, '88-June 10, '88, and parasites a 

 few days later. The lot consisted of 183 galls and gave 83 producers, 

 38 specimens of E. giganfea and 7 beetles. 



I have had over 500 specimens of this gall from Manitoba and the 

 Northwest provinces, and I think it very certain that none of the occu- 

 pants come out in the fall season. I never found more than one occupant 

 in a gall, producer or parasite. The larva makes no preparation for 

 leaving the gall, the exit is made invariably by the imago after leaving the 

 pupa case. The boring is done with the front, and it is very interesting 

 to see the soft, flabby looking mass assume the shape of tools, square and 

 triangular brotches, gouges, chisels and lancet-like points, and surprising 

 to see how rapidly the hard shell of the gall is cut away. This gall seems 

 to have a wide range over the Northwest provinces. In addition to the 



