OF WASHINGTON, VOLUME XIII, Mill. 109 



Mr. Rohwer stated that of the four North American 

 species of Tonwstcthns the habits of only two were known, 

 and these feed in the larval stage on ash. In Europe the 

 habits of three of the species are known. Two of these feed 

 on the European ash (Fra. \inns c.\-cc/st\>r Linn.), and the 

 other. T. f/tlioinosns Schrank, feeds on Ranunculus sclcralns 

 Linn. In Europe eight different sawflies attack the com- 

 mon ash. These are: Cnvstis septentrionalis Linn., 70- 

 mostethus inc/anopv^iis Costa., T. n ig rilus Fabr. , Macrophya 

 punctum-album Linn., I\'/u>gog-astcr piiiiclti lain King, Pac/iv- 

 pro/as/s rapic Linn., Tenthredo (olim Allantus] res-pa Linn. 

 The American species of Tomostethus are abundantly different 

 from the European ones. W. F. Kirby, Cameron, Dalla 

 Torre, and Konow consider Tomostethiis bard us. (Say) to be 

 the same as Tcnthrcdo cord/gcra Pallisot de Beauvois. But 

 although hard us agrees with the description and figure of 

 cordigcra it does not .agree with the enlarged drawing of the 

 antennae. For this reason, and because Lepeletier (1823), 

 who is the first reviser, considers cordigera to be a Central 

 American species, the name cord i^ era has been restricted to 

 those Central American specimens which answer not only the 

 description and figure of the adult but also agree with the 

 figure of the antennae. 



Mr. Marlatt stated that in 1SS<,. 1897, and 1898 (and even 

 earlier) at Manhattan, Kansas, he noticed almost complete 

 defoliation of a dense clump of ash by a common ash sawfly, 

 the entire grove of 15 or 20 acres being totally stripped. The 

 eggs were laid on leaves, petioles, etc. Amongst the numerous 

 larvae were found some (about 2 or 3 per cent) with the 

 head pale, the rest having the head black. These were col- 

 lected, notes were made, and when the imagoes issued were 

 found to be new. There was also a third species amongst 

 these larvce which was not reared, but must have belonged to 

 a different genus, being similar to one of the spiny rose-feed- 

 ing larva.'. Reared specimens were sent as a loan by Professor 

 Popenoe, about ten years ago, from which a description was 

 drawn up, but was never published, and he is now glad that 

 Mr. Rohwer has given it a place. 



