14 



sixth, seventh and ninth joints of equal length; eighth joint shortest 

 and a little thickened. Prothorax bearing a small protuberance on 

 each side in front under the eye. Wings when present, whitish. 

 Style about as long as the body. 



REMARKS. 



So far as known C. salicis is confined to Europe. It has been 

 recorded by Douglas in England, by Reuter in Finland and by Sig- 

 noret in Vienna, Austria and also in Switzerland. Although Signoret 

 does not state definitely that it occurs in France we would infer that 

 it is found there from the fact that he gives an account of it in his 

 " Essai sur les Cochenilles " without giving a locality. The Depart- 

 ment of Agriculture contains specimens also from Bohemia and 

 Hamburg, Germany and the species has been sent me from Italy by 

 Mr. Karl L. Kafka. 



The species has been recorded by various authors on the following 

 plants: Salix hermaphrodita, S. alba, S. viminalis, S.holoserica, Frax- 

 inus excelsior, Sarcothamnus scoparius, Populus nigra, P. Pyramidalis, 

 Vacdnium myrtillus and Alnus communis. Willow, ash, maple, poplar 

 and alder have also been given without mentioning the species. The 

 Department of Agriculture contains specimens from Dr. E. Reuter 

 on Vacdnium vitis-idaea and from Dr. L. Rey of Hamburg on Tilia 

 parvifolia. Mr. Karl L. Kafka of Vienna has sent me specimens 

 on Alnus glutinosa, Populus tremuloides, Sarcothamnus vulgare, Corn us 

 sanguinea and Acer pseudoplatanus. 



The following scattering statements from various authors indicate 

 briefly the life history of the species. Ratzeburg states that there 

 is only one generation. Bouche has found that " 20 30 reddish 

 purple eggs " are laid in the fall and hatch during the first warm 

 days of the spring. He observed that they hatch as early as 

 February and March. Signoret states that he has found the males 

 in the pupal stage in the month of August. Newstead. however, bred 

 a large number of males in the last week of July and the first week 

 of August. This difference in time of development of the male is 

 doubtless due to difference in localilty. According to Bouche' the 

 length of the pupal stage is from eight to fourteen days. 



In the writings of Bouche and Ratzeburg it is stated that the 

 male is apterous, while Signoret affirms that it is winged, and not 



