252 EXPERIMENT STATION RECORD. 



An egg parasite of the codling moth belonging to the family Mymaridae, 

 A. A. GiRAULT {Canad. Ent., J/S (1911), No. 4, PP- 133, ISff). — Anaphes gracilis, 

 originally described as a parasite of the oyster-shell scale, is recorded as hav- 

 ing been bred from eggs of the codling moth at Tallapoosa, Ga. 



Observations on mites infesting the horn fly, Haematobia serrata, S. Had- 

 WEN (Canad. Ent., 43 (1191). No. 5, pp. 14I, 1^2, pi. 1). — The author records 

 observations made at Duncans, British Columbia, in July, 1910, in which 94 

 of 118 horn flies examined were infested with mites (Pigmeopliorus americanus) . 

 The number of mites found on a fly varied from 4 or 5 to large numbers. Later 

 in the season, the mites were found in other parts of British Columbia. 



Another account of the food habits of the olive fly, G. Maktelli (Boh Lab. 

 Zool. Gen. e Agr. R. Scuola Sup. Agr. Port id, // (1910), pp. 73-10.',, flgs. 9).— 

 Further biological studies are presented (E. S. R., 22, p. 59). 



Experiments in 1910 against the olive fly, A. Berlese (Redia, 7 (1911), 

 No. 1, pp. 111-155, pis. 2; ahs. in Internat. Inst. Agr. [Rome^, Bui. Bur. Agr. 

 Intel, and Plant Diseases, 2 (1911), No. 3, pp. 753, 75 J/). — Experiments con- 

 ducted in olive groves in Apulia and near Orbetello in the Tuscan Maremma are 

 reported. 



In the first-named place, exiieriments were made with a fly-poisoning mixture, 

 diluted with water, while vessels containing the undiluted mixture were used 

 in Maremma. "The experiments in Apulia showetl (1) the decided attraction 

 which water has for the fly if pots containing water are within the olive groves 

 during hot days and in districts where there is little moisture, as in Southern 

 Italy; (2) the absolute inefficacy, as far as the fly is concerned, of general 

 spraying of the olive groves in July with fly-poisoning mixtures. The experi- 

 ments in Maremma showed that the mixture used, although made with abun- 

 dant fruit paste and kept in a sirupy state, had no attraction for the fly, and in 

 all probability, no useful effect for the olives." 



The author emphasizes the fact that it is not the presence of sugar in the 

 mixtures which is of importance in the control of the fly but rather that of the 

 water, and more particularly of sea water. "S'essels containing the liquid should 

 be placed in the olive groves in May and left until all danger from the fly has 

 passed. Sprayings are thought to be useless at least for districts with climatic 

 conditions as in Apulia. The experiments show that spraying with sugar mix- 

 ture causes a strong development of sooty mold on the trees. " The use of 

 vessels placed throughout the olive groves, in the minimum proportion of 2 per 

 hectare, and kept full of sea water or fresh water, is very efficacious at least 

 in Southern Italy. But the treatment nuist be quite general and simultaneous 

 on the part of all the olive growers of a district, unless the olive groves are 

 separated from one another by distances of several kilometers." 



The photography of Diptera, W. M. Graham (Bui. Ent. Research, 2 (1911), 

 No. 2, pp. 153-160, figs. 2). — ^A somewhat detailed account of the methods which 

 the author has found to be most successful in photographing insects. 



Ceratophyllus silantiewi, Wagner; a plague flea, N. C. Rothschild (Ent. 

 Mo. Mag., 2. ser., 22 (1911), No. 258, p. l.'il). — The author has received speci- 

 mens of this little known flea, which were captured on the frontier of Siberia 

 and Manchuria early in 1911 from "tarabagans" (Arctomys bobac). a rodent 

 known to suffer from epidemics of plague. It is stated that the recent epidemic 

 of plague in Manchuria started among the Chinese hunters of these animals 

 in Mongolia. 



An epidemic of fungus diseases among soldier beetles, C. H. Popenoe and 

 E. G. Smyth (Proc. Ent. Soc. Wash., 13 (1191), No. 2, pp. 75. 76).— The authors 

 report that numerous adults of the soldier beetle CTiauliognathus pennsylvani- 



