274 



Hopkins (A. D.). Contributions toward a Monograph of the Scolytid 

 Beetles. — II. Preliminary Classification of the Superfamily 

 Seolytoidea. — U.S. Dept. Agric, Bur. Entom., Washington, D.C., 

 Tech. Ser. no. 17, pt. ii, 9th January 1915, pp. 165-232, 

 8 plates, 17 figs. 



In this paper on the Scolytid beetles of the world, their anatomy 

 and the formation of their galleries are described at length, and a 

 key is given to the families, of which four, the Ipidae, Scolytidae, 

 ScoLYTOPLATYPODiDAE, and the Platypodidae are recognised. A 

 list of the genera and a bibliography of over 80 works are appended. 



Hopkins (A. D.). Classification of the Cryphalinae, with descriptions of 

 new genera and species. — U. S. Dept. Agric, Office of the Secretary, 

 Washington, D.C., Report no. 99, 10th March 1915, 75 pp., 

 4 plates, 1 fig. 



This report deals with the subfamily Cryphalinae of the family 

 Ipidae, which includes a group of ambrosia beatles, and gives 

 descriptions of new species, many of which are of economic impor- 

 tance, as well as keys to the known genera and species. 



Jones (P. R.). Preliminary Report on Spraying of Eggs for the Control 

 of the Purple and Green Apple Aphides of California. — Mthly. Bull. 

 Gal. State Commiss. Hortic, Sacramento, iv, no. 1, January 1915, 

 pp. 20-30, 1 table. 



In these experiments during the season of 1914, a large number of 

 nursery trees, heavily infested with the eggs of Aphis pomi (green 

 apple aphis) and A. sorbi (purple apple aphis), were used. The results 

 of several previous workers are reviewed, and the author's extensive 

 experiments are detailed in a long six-page table. 



So far as can be determined at present under western conditions, it 

 is believed that dormant treatment for the eggs of these two aphids 

 should be cither commercial crude oil emulsion, 1 to 9 or 1 to 10 

 (where the concentrate contains about 85 per cent, crude oil) ; home- 

 made cnide oil emulsion from 10 to 15 per cent, strength made from, 

 a crude oil running 19° to 23" Be. ; commercial lime-sulphur at 1 to 6 

 or 1 to 7, the application being as late in the winter as possible, but 

 before the buds begin to show green. If home-made distillate oil 

 emulsions are used, they should be made from heavy distillate, and 

 the dilution in the tank should consist of 7 or 8 per cent. oil. 



The stock solution of home-made distillate oil emulsion (by volume) 

 is : water, 2 parts ; cresol soap, 5 parts ; and distillate oil 26°-29° Be., 

 25 parts. 



Quarantine Order No. 26 (with Regulations) : Mexican Cotton Boll- 

 weevil. — Mthly. Bull. Cal. State Commiss. Hortic, Sacramento, iv, 

 no. 1, January 1915, p. 45. 



Anlhonomus grandis. Boh. (Mexican cotton boll weevil) has not yet 

 been recorded in California, but is known to exist in several of the 

 United States. The main provisions of this order are as follows : 

 The importation into California of cotton seed, grown in any of the 



