250 EXPERIMENT STATION RECORD. 



mals' bodies. During the stage of the disetise iu which septicemia is marked 

 these mites' digestive tracts contain the bacilli of rat leprosy in considerable 

 numbers, and therefore these parasites may be one means of transmitting the 

 disease. This latter i)robability, however, is, of course, not proven." 



A bibliography of 17 titles relating to the subject is appended. 



Report of the state entomologist, T. B. Symons {Rpt. Md. Hort. Soc, 12 

 {1009). pp. 15S-18i, pis. 2).— It is stated that 289,652 of 1.197,096 orchard 

 trees inspected during the year were found infested with San Jose scale. Nur- 

 sery inspection and public spraying work is reported on and a brief account is 

 given of the occurrence of a few of the more important insect pests, and of 

 dipping and spraying experiments, etc. 



The insects of New Jersey, J. B. Smith {Ann. Rpl. N. J. State Mus., 1909, 

 [piih. 1910], pp. 15-880, pis. 10, figs. 322).— This is a revised edition of the 

 author's catalogue of the insects occurring in New Jersey (E. S. R., 12, p. 367). 



Report of entomologist, R. I., Smith {North Carolina Sta. Rpt. 1909, pp. 32, 

 33). — Experiments conducted with the common red house ant, Monomorium 

 pharaonis, which in August became abundant in the agricultural building, 

 demonstrated that they may be kept off laboratory tables, desks, shelves, etc., 

 by the use of a saturated solution of bichlorid of mercury, one application being 

 effective for several weeks, except for an occasional stray individual. Brief 

 statements are given of work with corn weevils and San Jose scale. 



Insect pests [in the West Indies, 1909-10], H. A. Ballou {West Indian 

 Bill., 11 {1911), No. 2, pp. 85-94). — The author reports upon the more important 

 insect pests of the year that attacked sugar cane, cotton, cacao, citrus, rubber 

 trees, sweet potato, green manure crops, ground nuts, and onions. 



Report of economic zoology for the year ending April 1, 1909, F. V. Theo- 

 bald {Jour. Sotitheast. Agr. Col. Wye, 1909, No. 18, pp. 87-196, pis. 34, figs. 

 2). — In this report the author considers the insects and other enemies which 

 during the year were injurious to domesticated animals, fruit trees and bushes, 

 corn, grass lands, root crops, pulse, hops, vegetables, flowers, forest trees, and 

 stored goods, or caused annoyance to man. A list and synoptic table of, and 

 notes on, the British Culicidte are included. It is said that by far the worst 

 attacks during the year were those of the eelworm and frit fly in corn. 



Brief mention is made of a plague of noctuid caterpillars {Laphygma 

 exem/pta) that visited the town of Bulawayo, Rhodesia, iu December, 1907. 



Destructive Insects and Pests Order, 1910 {Bd.Agr. and Fisheries [London], 

 Intel. Div., Ann-. Rpt. Proc. 1909-10, pp. 25-69, pis. 2). — The pests scheduled 

 under the Destructive Insects and Pests Order of 1910 are discussed, namely, the 

 grape phylloxera, San Jose scale, Mediterranean fruit fly {Ceratitis capitata), 

 Colorado potato beetle, large larch saw fly {Nematus erichsonii), potato moth 

 {Lita solanella), gypsy and brown-tail moths, nun moth {Liparis monacha), 

 cherry fruit fly {Rhagoletis cerasi), narcissus fly {Merodoiv equestris), black 

 knot, wart disease of potatoes {SyncJigtrium endohioticum), tomato leaf spot 

 ( Septoria lycopersiei ) , and melon or cucumber canker ( Mycosph cerella citrulUna ) . 

 The unscheduled pests noted (pp. 62-69) are the felted beech coccus {Cryp- 

 tococcus fagi), beetles on osier beds {Oalenicella lineola, Phyllodeeta vitellince, 

 etc.), horse-radish disease in Cheshire due to Pseudotnonas campestris, 

 "leather-jacket" or crane fly larvse which caused injury to oats in Lancashire, 

 frit fly inquiry, and bee disease in the Isle of Wight. 



The principal insects injurious to horticulture during 1908-9, M. H. 

 SwENK {Ann. Rpt. Nebr. Hort. Soc., 40 {1909), pp. 15-128, pis. 16).— In this 

 report the author deals with insect pests of fruits, shade trees, and ornamentals 

 that came to his attention during the two years prior to April 1, 1910, 



