62 EXPERIMENT STATION RECORD. 



On some American JEoloth.ripidae, J. D. Hood {Ent. Neics, 26 (1915), Xo. 4, 

 pp. 162-166, fig. 1). — Franklinothrips tenuicornis from Moro Island, Panama, 

 is here described as new. 



New Thysanoptera from Florida and Louisiana, J. D. Hood and C. B. 

 Williams (Jour. N. Y. Ent. Soc, 23 (1915), Xo. 2, pp. 121-138, pis. 4).— Eleven 

 species and 3 genera are described as new. 



The Ontario mealy bug (Pseudococcus sp.), E. O. Essig (Mo. Bui. Com. 

 Hort. Cal., Jf (1915), No. 7, pp. 343, 3-J-J, fig. i).— This mealy bug, which infests 

 citrus orchards at Upland, Cal., and was first thought to be Pseudococcus 

 bakeri, is apparently a new species or one imported from some other country. 

 The recent finding of an infestation of this species at Oakland, Cal., on a ship- 

 ment of bay trees from Holland indicates that it was introduced from that 

 country. 



Preliminary report on the woolly aphis, E. X. Cory (Jour. Econ. Ent., 

 8 (1915), No. 2, pp. 186-190). — Investigations in Maryland, here reported, have 

 led to the following conclusions : 



" Of all the insecticides used Electro Pine Tar Creosote holds the greatest 

 promise due to, first, its power to kill the aphidids ; second, its strong repellent 

 action and its retention of the penetrating odor after at least 21 months in the 

 soil ; third, its stimulative effect on diseased tissues ; and fourth, the possibility 

 of ennilsifying it readily. Thei*e is a symbiotic relationship between the 

 aphidids and Lasius (Acanthomyops) intcrjcctus. There appears to be a 

 congregating habit in L. intcrjcctus of which it may be possible to take ad- 

 vantage in controlling the ant. Creosote is an effective repellent for this ant. 

 Paradise stocks show some degree of immunity to attack by the root forms of 

 the woolly aphis." 



The pea aphis with relation to forage crops, J. .T. Davis ( U. S. Dcpt. Agr. 

 Bui. 270 (1915), pp. 67, figs. 17). — A monograph of Macrosiphum pisi in which 

 the subject is dealt with under the heading of synonymy, identity of species 

 occurring in America, past history of the pest and its injuries, character of 

 attack, effects on cattle of feeding them infested clover, distribution and 

 origin, food plants, description, life history, field observations, generation 

 experiments, hatching of the egg, molting, age at which females begin repro- 

 ducing, reproductive period, longevity, fecundity of viviparous females, sexual 

 forms, fecundity of oviparous females, natural control, and methods of arti- 

 ficial control. 



Bibliographies of the European literature and of the American literature, 

 consisting of thirteen pages, are appended. 



A brief general account of the pea aphis by Chittenden has been previously 

 noted (E. S. R., 13. p. 265), a second edition of which was issued in 10(19. 



The cabbage aphis, P. J. Paurott and B. B. Fui-ton (New York State St a. 

 Circ. 30 (1914), P^s. 2, fig. 1). — A popular account of this pest and means for 

 its control. 



Cotton worm, L. Haseman (Jour. Econ. Ent., 8 (1915), No. 2, pp. 192, 193).— 

 The author reports that during the past throe years the moth of the cotton 

 worm has migrated northward across ilissouri, its damage to fruits having 

 been considerable each year. Late peaches are said to be the moth's favorite 

 food, though it may also attack apples, grapes, pears, tomatoes, and other 

 fruits on the market. 



The corn ear worm, L. Haseman (Jour. Econ. Ent., 8 (1915), No. 2, pp. 

 214-21S, pis. 2). — A report of observations in Missouri, where the pest has been 

 unusually abundant and the source of enormous damage to corn and other 

 crops during the past few years. 



