241 



in Alaska. One species is new, one has not before been recorded 

 from the Nearctic region, and two are new records for Alaska. The 

 species of economic interest recorded are Lygns pmtensis oblineattts, 

 say, Plesiocoris riigicoUis, Fall., which has not previously been 

 known from North America, and Irbisia sericans. Stal, which was 

 common on rye grass. The last-named is injurious to rye and oats- 

 in California. 



Garman I p.). a Study of the Bulb Mite {Rhizoglypkus hyacinthi. 

 Banks.). — Connecticut Agn'c. Expt. Sta., Xeiv Haven. Bull. 225 

 (Ent. Ser. no. 28), January 1921, pp. 115-132, 3 plates, 3 figs. 



Inspection in 1919 revealed the fact that a large percentage of the 

 bulbs imported into Connecticut were infested with Rhizoglypluis 

 hyacinthi, Banks (bulb mite). A general description of this mite is 

 given. It is apparently able to subsist on almost any tuber or bulb. 

 Narcissi and lilies offer least resistance to attack, as the scales are 

 loose and the mites easily penetrate to the interior. Tulips are least 

 injured, hyacinths slightly more so ; onions do not seem to be infested 

 unless already partly rotten or bruised. An account is given of 

 the life-history of the mite ; the dimorphic or heteromorphic male 

 is described, and the hypopial form and the causes affecting it& 

 production are discussed. Dissemination is chiefly by means of the 

 hypopial stage, which clings to small flies emerging from the decayed 

 bulbs. While the life-cycle may occupy from 9 to 29 days, it may 

 be extended to a month and a half if the h\'popial stage develops 

 or adverse conditions prevail. 



The Tjaoglyphid, Histiostoma rostroserratits, is frequently found in 

 company with i?. //^'^c?;?////, a'nd predaceous mites (Laelaptini) doubt- 

 less destroy many of the bulb mites. The larvae of a Cecidomyiid, 

 Lestodiplosis sp., also feed on them. Various remedial measures tried 

 by different investigators are discussed, and a list is given of 

 treatments with many substances. Dipping the bulbs in nicotine 

 sulphate 1 : 400, or nicotine oleate, heated to 122^ F., or even water 

 at the same temperature, is a satisfactory method of killing the mites. 



Brittox (W. E.) & Clixtox (G. P.). Spray Calendar. — Ccnnecticuf 

 Agric. Expt. Sta., New Haven, Bull. 224, 1921, pp. 67-110, 

 numerous figs. 



This is a revision of an earlier sprav calendar for Connecticut 

 [R.A.E., A,\[,464]. 



Blackmax (M. W.). The Spruce Budworm. — Maine Forestry Dept., 

 Augusta, 1919, 10 pp. [Received 16th March 1921.] 



Tortrix fumiferana, Clem, (spruce budworm) is considered the most 

 destructive pest of spruce, fir and hemlock in Maine. A heavy 

 infestation of this moth reached its climax in 1878 and 1879, occurring 

 chiefly on tMe islands and coastal area ; after that date its activities 

 were comparatively unimportant for more than thirty years. Since 

 1911, however, numerous complaints ha\'e been made of its depre- 

 dations, and at present the outbreak is far more serious than the 

 previous one, for it comprises not only the coast regions, but practically 

 every wooded area of the State, the inland regions being the most 



