EXPERIMENT STATION BULLETINS. 



381 



■notum longer with more divergent carinas than in M. notulus. The yellowish markings 

 above vary much in extent, some specimens being almost entirely of a dull piceous- 

 black while some are pitchy brown with the pale markings much extended. The 

 -characters of the head, the pale face and the black vertex and clypeus seem quite con- 

 stant as does also the color of the tylus, rostrum, legs and elytra. 



Of the other epecieB Phelpsiniis irroi^atus Say and Aqalliasanguineolenta 

 were quite often taken ; Tettigonia novehoracensis, Thamnotettix clUellaria 

 Deltocephalus melsheimeri Fitch and D. inimicus Say, occasionally taken. 

 No extensive collecting was done in getting this material. To secure 

 specimens of those most common on celery rather than a complete list was 

 the obje(*i. 



REMEDY. 



Owing to the fact that leaf hoppers do not feed by chewing the plant, 

 but live on sap taken from the inside of the stem or leaf, most of our 

 insecticides are of little avail. This being the condition and the hoppers 

 flo injurious to the young plants, another method was devised that has 



Fig. 5.— The hopperette used in collecting leaf hoppers, flea beetles and many of 

 the celery bugs, a, string— (original) . 



succeeded even better than my first anticipation had predicted. It is by 

 means of a small tarred pan attached to a hand wheel hoe as in Fig. 5. The 

 pan is made of sheet iron. The bottom is 16x20 inches with a notch 



