does not kill the lice, while a strong solution injures the cabbages. The 

 emulsion, however, is recommended for lice upon stock, while for sheep 

 scab it is also a most excellent remedy. Under the head of general 

 recommendations, remedies are given for the TTillow Saw-fly, Cotton- 

 wood Leaf-beetle. Plant-lice. Cut-worms. Cecropia Moth, Tent Cater- 

 pillar, Ash Borer and Potato Beetle. 



ROSE SAW-FLIES IN THE UNITED STATES. 



Bt C. Y. Riley. 



THE BEISTLY K0SE-TV0E3I. 



{Cladius jycctinicoDiis Foiircr.) 



Fig. 1. — Cladius pectinicornis : a. larva; 6, female pupa : c. female adult : d. cocoon: e. headof larra; 

 /, autenna of male — all enlarged (original). 



In 1880 I noticed that most of the leaves of the roses in my garden 

 were badly eaten and mutilated, and, on examination, found that the 



insects which had been doing this damage were the larv?e of a saw-fly 

 which differed from those of the common Eose Saw-fly {Monostegia [Sel- 

 andria] roscv Harris). They were watched until pupation, and the flies 

 which emerged in spring proved to be identical with another of Harris's 

 species. CJadius isomera.^ which was redescribed by Xorton in the 

 Transactions of the American Entomological Society, Philadelphia, 

 l-§r6, (pp. 71-75). ]\Ir. Norton, at the end of his description, states that 

 a number of the flies were taken by him June 29 on Clematis virginiana, 

 near Farmington. Conn., without, however, intimating that this may be 

 the food-plant of the species. Comi^arison of the description and speci- 



"Harris. Cataloo-ue. Xorton. Boston Proc. vrii. 1881,223. 



