597 



enemy of Rhahdocnemis obscura, Boisd. (sugar-cane beetle borer), are 

 described. It was feared that all the colonies had failed completely, 

 but it has recently been found that at least in one district the borer 

 has decreased enormousl}^ since 1917, while the parasite is quite 

 abundant in many of the fields. It is true that a variety of banana 

 more resistant to borer attack has been grown of late years, but even 

 allowing for this, the improvement in the situation is very marked. 



Swain (A. F.). Miscellaneous Studies in the Family Aphididae (Hem. 

 Horn.). V. Notes on some Laehnids in the British Museum.— 



Ent. News, Philadelphia, xxxii, no. 7, July 1921, pp. 209-213, 

 and no. 8, October 1921, pp. 225-229. 



The species dealt with include Pferochloriis longipes, Dufour, on oak, 

 of which the individuals examined agree very well with Walker's 

 description except in a few points of minor importance ; Lachniis 

 fasciaiiis, Burm. {farinosa, Cholod.) on spruce ; Schizolachnus tomen- 

 tosus, DeG. (Lachniis pineti, F., S. fuliginosa, Buckt., and Mindafus 

 abietinus, Koch), Lachniis pineti, Koch, being a different species ; 

 Dilachnus hyalinns, Koch [macrocephalus, Buckt.) on Picea excelsa ; 

 Dilachnus juniperi, DeG. (erroneously recorded by Del Guercio as 

 Lachniella jtmiperi, F.) ; D. laricis, Wlk. [Lachniella nigrotiibercidata, 

 Del Guer., on larch in Italy) ; D. piceae, Wlk., on Abies spp. {Lachnus 

 vcindiizei, Swaine, on spruce in California). 



Dilachnus pinihabifans, Mordw., has frequently been recorded as 

 pinicola, Kalt., and the author considers that Lachnus pinicola, 

 Kalt., of both Walker and Buckton is really D. pinihabitans. From a 

 comparison of measurements which are given, it is considei'ed that 

 Lachnus pini , L., of Walker and Buckton is Dilachnus taenialns, Mordw. 



Tower (W'. V.). Report of the Entomologist. — Kept. Porto Rico 

 Agric. Expt. Sta. 1920, Mayaguez, 19th July 1921, pp. 23-27, 

 1 plate. [Received 21st OctobeV 1921). 



Purple scale [Lepidosaphcs beckii] has been kept in check for the 

 last few years in citrus groves by various beneficial fungi that flourish 

 where windbreaks are employed. White scale [Chionaspis citri] 

 has increased owing to the dry spring and summer, and is worse in 

 young groves planted in light sandy soils than elsewhere. It has 

 fewer beneficial fungi infesting it than L. beckii, and does not respond 

 so readily to treatment. The rufous scale [Chrysomphalus aurantii] 

 has been frequently found, and if it becomes more abundant should 

 be checked bv the sprays that have been found effective in Florida 

 [R.A.E.,A,Yi, 217]. 



Harris (F. S.) & Butt (N. I.). Thirty Years of Agricultural Experi- 

 ments in Utah. — Utah Agric. Expt. Sta., Logan, Circ. 46, June 

 1921, 64 pp. [Received 22nd October 1921.1 " 



In the section of this review dealing with entomology, an account 

 is given of the habits of, and remedies for, certain pests that have 

 previously been dealt with in the various publications of the Utah 

 Agricultural Experiment Station over a number of years. 



In the case of the alfalfa weevil [ Hypera variabilis] which infests 

 lucerne and clovers, the injury is practically all done by the larva. 

 The remedies suggested are disking in early spring to stimiilate the 



