251 



trtge of the iutested fruit (at gatliering) had been attacked by the second 

 brood and the hirv;e were still present." {Op. cif., 1801, p. 100.) The 

 second brood referred to in these last records is a mere inference, but is 

 supported by the undoubted rearing- of small numbers of moths iu Sep- 

 tember by Mr. Atkins. 



It is evident from the European records and Mr. Atkins' studies, 

 when compared with the records from the Middle and Western States, 

 that the numberof broods of this insect is merely a question of climate 

 and temperature, and granting the correctness of Prof. Smith's obser- 

 vations, it must be inferred that the climate at New Brunswick dift'ers 

 in the summer season sufficiently from that of the Middle and Western 

 States, evenof Iowa and northern Illinois, to lead to the development 

 of but one yearly brood. This difference in climate receives support 

 from the discovery by Prof. Smith that the imported elm leaf-beetle 

 has one brood less at New Brunswick than at Washington, although 

 the difference between the two points is not great. Prof. Smith's 

 experience makes it very desirable to have careful breeding records 

 conducted not only for northern New Jersey to confirm his own expe- 

 rience, but for New York, the New England States, and Canada, 

 throughout which region only can the double-broodeduess be doubted. 



A NEW SAWFLY WHICH IS INJURIOUS TO HOLLYHOCKS. 



By T. D. A. CocKEKELL, Las Cruces, N. Alex. 



On July 3 of the present year I found close to the cathedral at 

 Santa Fe, N. Mex., a number of sawtly larvjB feeding on Sphceralcea 

 angustifolia Spach. From these adults of both sexes were in due time 

 bred. Although the Sphceralcea is extremely common at Santa Fe, 

 and likewise at Las Cruces, N. Mex., I did not find it infested by these 

 sawflj' larvoe except at this one spot. In fact, of several plants there 

 growing together some were very badly infested while others were 

 nearly free. In August another generation of larvie ai)peared, and 

 again the same plants were infested in the same way, so that, although 

 the sawfiies were to be seen liying about in half circles at the time of 

 emergence, they seemed to have returned in each case to oviposit on 

 the plants from which they came. The plants, being twice defoliated, 

 pr.esented a sorry aj)pearance. The leaves produced after defoliation 

 appeared to l>e shorter, and broader in proportion to their length, than 

 those on the normal plant. 



T[\Q\xo\\y\xock.{Alt1u(;a rosea) is commonly cultivated in gardens at 

 Santa Fe, and I did not anywhere find it attacked by the sawtly larvm 

 except in the garden of Governor Thornton, which is only about 150 or 

 200 yards from the original Sphroralcea locality. This was on August 

 9, and the hollyhocks were badly injured by a brood which was inter- 



