601 



ScHAFFNiT (E.). Eiweisserdalkaliverbindungen als Zusatzstoffe fiir 

 Bekampfungsmittel zur Erhohung des Haftvermogens. [Com- 

 binations of Albumen and Earth Alkalis as Addition to Sprays 

 to enhance their Adhesiveness.] — Zeitsdir. Pflanzenkr., Stuttgart, 

 xxxi, no. 1-2, 1921, pp. 19-22. 



Such adhesives as resin-soap, molasses, etc., do not satisfactorily 

 prevent insecticides and fungicides from being washed off by rain. 

 To be effective an adhesive must not only confer lasting sticking power, 

 but must pass from a condition of solubility in the solution to one of 

 insolubility on the leaves, without interfering witli their functions. 



Colloidal substances in the albumen group, especially in combination 

 with earthy alkalis, such as calcium and barium, are excellent. A 

 combination of casein and lime was very effective. To make it, 20 

 gms. of finely powdered milk albumen free from fat are mixed 

 with 5 gms. of calcium oxide (cooled after being made thoroughly 

 incandescent), and then 150-200 cc. of water are slowly mixed in. 

 In about half an hour a gummy mass results, which can be thinned 

 with more water and then added to 100 litres spray solution. 



Analysis of sprayed foliage has definitely established the value of 

 this adhesive, though the present high price of casein prohibits its 

 use. Investigations are being pursued with the object of finding 

 some cheap substance with similar properties. Once a suitable adhesive 

 is found, dusting as a substitute for spraying will be investigated. 



SwEZEY (O. H.). Note on the Eggs of Araeocerus fasciculatus ,'De G. 

 (Anthribidae, Coleoptera). — Proc. Hawaiian Ent. Soc, 1920, 

 Honolulu, iv, no. 3, September 1921, pp. 452-453. 



The eggs of Araecerus fasciculatus here described were found in 

 koa [Curcuma'] pods in batches containing fort}^ to sixty. The seeds 

 in these pods had been eaten by the larvae of Cryptophlehia illepida, 

 Butl., and the eggs were probably deposited through the hole made 

 in the pod by the larva of the moth. Egg-clusters of Pantomorus 

 fulleri, Horn, were found in the same batch of pods. 



FuLLAWAY (D. T.). Cryptotcrmes hrcvis in Hawaii (Isoptera). — Proc. 

 Hawaiian Ent. Soc, 1920, Honolulu, iv, no. 3, September 1921, 

 pp. 456-457. 



A species of Cryptotermes commonly found in Honolulu has recently 

 been identified as C. hrcvis, Wlk. In Cuba and Florida this termite 

 is very destructive to buildings and furniture. 



SwEZEY (O. H.). A new Immigrant Weevil attacking Banana (Coleop- 

 tera, Curculionidae). — Proc Hawaiian Ent. Soc, 1920, Honolulu, 

 iv, no. 3, September 1921, p. 457. 



Stcnommatus musae, Mshl. [R. A.E., A, ix, 90] is recorded as injurious 

 to bananas in Hawaii. 



SwEZEY (0. H.). A new Bark Beetle from Easter Island (Coleoptera, 

 Cossonini). — Proc. Haioaiian Ent. Soc, 1920, Honolulu, iv, no. 3, 

 September 1921, pp. 462-463. 



Sericotrogus hryani, sp. n., here described, was taken under the bark ^■■' 

 of Broussonetia papyri/era in Easter Island. 



