ENTOMOLOGY. 663 



A. mseuli, A. aurantii, A. camellia', A. aneylus, A. nerii, A. juglans-regice, 

 Mytilaspis pomorum, Chionaspis furfurns, G. salicis, C. pini/oUce, Diaspis 

 rosa, Lecanium persicw, Prospalta murtfeldti, P. aurantii, Perrisopterus 

 pulchellus, >Signiphora nigrita, Arrhenophagus eh ionaspidis, Ablerus clisio- 

 eampce, and Ghilocorus hind iter us. 



Notes on the entomological events in 189(i in Ohio, 11. Osborne (pp. 

 78-80). — The army worm did considerable damage as a lirst brood; the 

 second, which appeared in July, threatened injury, but was severely 

 attacked by Microgaster militaris. The other insects noted are a leaf 

 hopper (Empoa alhipicta), an enemy of potatoes, Aspidiotus rosce, the 

 hickory bark beetle (Seolytus 4-spinosus), the Hessian fly (Geeidomyia 

 destructor) which was accompanied by its parasite (Semiotellus destruc- 

 tor), and the elm span worm (Eugonia subsignaria), which is said to have 

 defoliated large tracts of timber land. 



Is cooperation for the control of the s<oi Jose scale practicable, \Y . (I. 

 Alwood, (pp. 80-84). — After considering- the numerous difficulties 

 involved, it is concluded that it would be impracticable to enacl a gen- 

 eral law by the different States affected with the scale and that the mat- 

 ter should be taken up by the General Government. The great need of 

 systematic inspection and treatment of infected stock is brought out. 



The development of the Mediterranean flour moth. F. H. Chittenden 

 (pp. 85-88). — The life cycle was found to vary from 3* to 114 days, the 

 usual length of time necessary being from 38 to 52 days. The egg state 

 lasts from 4.4 days to as long as 2 weeks. The pupal period lasts from 

 8 to 27 days and the larval period from 24 to 25 days. 



A grasshopper disease in Colorado, C. P. Gillett (pp. 88-92). — Grass- 

 hoppers were found attacked by a bacterium resembling Bacterium 

 termo. It was found that termo from beef broth sprayed on alfalfa and 

 fed to healthy hoppers had the same effect as the germs from the 

 insects, killing them within 48 hours; and when inoculated directly 

 into the body, killing within 24 hours. The disease was found to 

 spread readily and over a large extent of country. Soon after some of 

 the experiments were performed in which dead and diseased hoppers 

 were mixed with water and sprayed on the food plants dead hoppers 

 were found over a mile away. The rearing of Sareophaga cimbisis, S. 

 sarraceniw, 8. sp., Gyrtoneura stabulans, Helicohia helicis, Aphwreta 

 hiuscce, and Perilampus sp., is noted. The bacterial disease is said to 

 be most prevalent in a wet time and upon low ground, and is confined 

 mostly to 2 species, Melanoplus bivittat us and M. femur-rubrum. It is 

 thought to be present in most localities in the State, at least to a small 

 extent. 



A simple device for the preparation of oil emulsions, H. A. Morgan (pp. 

 93, 94, fig. 1). — A 4-inch tin cylinder, from 20 to 24 in. long, provided 

 with 7 small openings and a plunger, consisting of a tin cone and a 

 §-in. iron rod, is described. 



Following this paper is the constitution and by-laws of the associa- 

 tion and a list of the members. 



