ECONOMIC ZOOLOGY ENTOMOLOGY. 557 



Reports of the several administrations were presented for Cape Colony by 

 C. P. Lounsbury, Natal by A. Kelly, Transvaal by F. Thomsen, Orange River 

 Colony by C. P. Van Der Merwe, southern Rhodesia by W. Honey, Basutoland 

 by C. E. Boyes, Bechuanaland Protectorate by U. Williams, R. J. Davys, and B. 

 May, Swaziland by W. Steward, Mozambique by C. W. Howard, and for German 

 Southwest Africa. The proceedings of the third annual meeting of the com- 

 mittee of control, held at Cape Town in May, 1909, are also given. 



An orthopterolog'ical reconnoissance of the southwestern United States. 

 Part III: California and Nevada, J. A. G. Rehn and M. Hebard ( nror. Acad. 

 Nat. Set. Phila., 61 {1909), pt. 3, pp. //0M83).— This is the final part of the 

 series, previously noted (E. S. R., 21, p. 555). Of the 110 species treated 6 

 species and 2 subspecies are new. 



Thysanoptera of southern California, II, D. L. Crawford (Pomona Jour. 

 Ent., 2 (1910), No. 1, pp. lJt9-152, fig. 1). — Notes are given on Euthripfi miiiutm, 

 PhyUofhrips fasciculata. and Anaphothrips longlpennis. The last-named of 

 these, taken from olive foliage infested with the black scale and also upon pine 

 foliage, at Claremont, Cal., is described as new., 



Thysanoptera of Mexico and the South, II, D. L. Crawford (Pomona Jour. 

 Ent., 2 (1910), No. 1, pp. 153-170, figs. 8). — In this paper, continuing previous 

 work (E. S. R., 23, p. 255), additional new species from the South, including 

 Mexico, Central and South America, and Cuba, are described and figured. One 

 species and variety of Euthrips, 2 species and a variety of Liothrips, and one 

 species each of Dictyothrips, Thrips, Phlceothrips, Anthothrips, and Idolothrips 

 are described as new. 



Notes on two West African Hemiptera injurious to cocoa, G. C. Dudgeon 

 (Bui. Ent. Research, 1 (1910), No. 1, pp. 59-61, pi. 1). — Notes on injury by 

 the cocoa Helopeltis from the Gold Coast and by the cocoa bark sapper 

 (SahlbcrgeUa theohroma) are presented. 



The curly-top of beets, H. B. Shaw ( U. S. Dept. Agr., Bur. Plant Indus. Bui. 

 181, pp. 46, i)ls. 9, figs. 9). — This is a progress report of investigations conducted 

 to determine the cause and remedial measures for curly-top of sugar beets, 

 which occurs in the intermountain region of the West, pai'ticularly in Colorado 

 and Utah, as previously noted (E. S. R., 19, p. 1151 ; 20, p. 954). 



From cage experiments conducted in which leafhoppers (Eutettix tenella), 

 thrips, and red spiders were used, it is concluded that the beet leafhopper is the 

 primary cause of the trouble. It is said that no outbreaks are known to have 

 occurred outside the native habitat of this insect, namely, the Southwestern 

 States, and generally in the vicinity of what is known as the " sagebrush 

 country." In the experiments the first unmistakable signs of curly-top were 

 noted within 1.3 days after the introduction of leafhoppers. 



" One leafhopper is capable of initiating the disturbances in a young beet, 

 and the effect of numerous hoppers on seedlings may be so severe as to kill 

 them in a few days, before the visible symptoms have had time to develop. 

 The younger the beet the more sensitive is it to leafhopper work. The nymphs 

 of E. tenella produce the symptoms of curly-top much more rapidly than do the 

 adult insects." 



" While there is still some doubt as to the original host plants of E. tenella, 

 it is rather probable that the i)rincipal ones are greasewood (Sareobatus sp.), 

 sea blite (Dondra sp. ), Atriplev sp., and Russian thistle. Tlie writer has found 

 the insect on Sarcobatus sp. and Atriplex sp." 



"No other insect and no other si)ecies of leafhopper is known to induce the 

 disease herein described." 



