3G4 EXPEKIMENT STATION RECOKD. 



OILS outbreak of this beetle on rhubarb occurred in May, 1899, in Ten- 

 nallytown, D. C. The distribution of this species includes the greater 

 portion of the United States east of the Mississippi Valley. The more 

 common native food plants are a species of dock and Helianthiis gros- 

 seserratu8. The beetle hibernates in the adult stage in the District of 

 Columbia. The eggs are deposited singly in small cavities constructed 

 in the stems of food plants. The o^gg period is found to be about 8 

 days and the larval stage about 2 months. Eggs deposited in rhubarb 

 apparently do not develop. The remedies to be applied against this 

 species are hand picking of the beetles and destruction of the native 

 food plants after the deposition of the eggs. 



Tlie dmv-hei'ry jiea-heetle {Ilaltica ignita) (pp. 70-78). — This species 

 is native to America and is distributed throughout the United States. 

 Near Washington the beetles appear in May. The duration of the Q,gg 

 stage was found to be about 6 days; that of the larval stage, 11 days. 

 There are apparently 2 generations annually in the vicinity of Wash- 

 ington. No insect enemies of this species have been discovered. The 

 remedies suggested are spraying with arsenicals, either Paris green or 

 arsenate of lead, both upon the cultivated and wild-food plants. 



The fall army worm in 1899 {Lapliygma ffugiperda) (pp. 78-85).^ 

 This insect was unusually injurious during 1899. It was reported as 

 ^ttdi^Mmg Agrostis stolonifera^ Euchena memcana. clover, grass, wheat, 

 and a great variety of cultivated crops. A In-ief account is given of 

 its distribution, life history, and habits, together with a short descrip- 

 tion of the species in its different stages. The observed natural ene- 

 mies are the English sparrow, tlicker, and Wrritheiniaquadripunctulata. 

 It is suggested that lawns might be freed from the caterpillars b}" the 

 use of kerosene emulsion. Other remedies suggested are the use of 

 poisoned baits, spraying trap crops with arsenicals, and the destruction 

 of the volunteer grain and wild grasses. 



The str'aijoberry croicn moth {Srsia rutilans) (pp. 85-90), — This insect 

 has caused considerable damage to the strawberry, blackberry, and 

 raspberry in California. A brief description of it is given. The most 

 successful remedy appears to l)e the submerging of affected ffelds. 

 Ordinary insecticide applications seem to be useless. 



The hlack gooseberry hcrer {Xyloerlu.s agassizii) (pp. 90-92). — This 

 insect was reported b}' Fletcher as having been introduced into British 

 Columbia from Oregon and as being injurious to gooseberry bushes. 

 A serious infestation by it was found in an Oregon nurser3\ The 

 species had previously been considered rare. The only remedy sug- 

 gested is the cutting out and destruction of the injured plants as soon 

 as infestation is dis(•o^•el•ed. 



Some insect pests of Salt River Valley and the remedies for 

 them, T. I). A. Cockerell {Arizona Sta. Btil. 32, pp. 269-295).— The 

 author r('i)oi"ts that Salt River Valley is comparatively free from insect 



