ECONOMIC ZOOLOGY ENTOMOLOGY. 61 



Diseases and insect pests [of coffee], J. ^V. Van Leeniioff (Porto Rico Sta. 

 Rpt. I'JOl, p. J/O). — Experiments in fertilizing to overcome losses clue to the leaf- 

 miner seemed to give good results, the tield described in a former report (E. S. 

 K., IS, p. lOGO) liaviug completely recovered and showing very vigorous growth, 

 with a very noticeable decrease of the brown spots on the leaves. A number of 

 old coffee trees have been attacked by a borer which eats its way in a vertical 

 direction through the heart of the trunks and branches. This pest is now under 

 investigation. 



Individual and seasonal variations in Helopeltis theivora, with descrip- 

 tion of a new species of Helopeltis, II. H. Mann (Mem. Dcpt. Agr. India, Eat. 

 Scr., 1 (tool), Xo. '/. ]ip. ^7')-,i.i7, pi. I, pgs. 5). — A large number of specimens of 

 Helopeltis tlicivoni were obtained from various i)nrts of India and careful obser- 

 vations were made to determine the variations which occur in this species. In 

 this work variations in color were noted and also variations in the size and 

 proportions of the antenrnv, legs, rostrum, and other anatomical parts. Particu- 

 lar attention was given to the possible effect of locality, seasons, and food upon 

 vari.-itions, but these factors appeared to be of little constant value. A change of 

 food from tea to cinchona led to no modification either in the structure of the 

 insect or in its color. The relationship between //. tlirirora and //. (inlonii is 

 brietiy discussed. 



The coccidae attacking the tea plant in India and Ceylon, E. E. (Jreen and 

 H. II. .Mann iMvni. Dipt. Agr. Jiidiit, Ent. Her., I (I'.lOl), \o. .5, pp. S.iJ-S.'i.'), 

 pis. .'i). — The information relating to scale insects which attack the tea plant in 

 India and Ceylon has been brought together and sunmiarized in this bulletin. 

 X list including 31 species, three of which are described as new, is given, together 

 with brief notes on the relative importance of these species. 



Means of combating' cockchafers. Von Tubeuf [XatitriD. Ztsclir. Forst u. 

 Landic, 6 (1908), No. 1, pp. 13~lo, Jig. 1). — A considerable variety of insecti- 

 cides was used in spiaying foliage to test their effectiveness in the control of 

 cockchafers. Bordeaux mixture, barium chlorid, tobacco decoction, and insect 

 powder had no effect. The use of Paris green, however, was attended with 

 striking success. Attention was called to the apparent wide-spread distribution 

 of a parasitic fungus, Isaria deitsa, upon cockchafers. 



On a neAV phytophagous mite with, notes on other species of economic 

 importance, C. G. Hewitt {Meiii. and Proe. Mdiiehester Lit. iiiid Phil. tSoc, 5.i 

 (1U07-H), j)t. 1, No, 5, Pi). 1-10, pi. 1, figs. 2). — Lohniannia insignis dissiiiiilis is 

 described as a new species of mite attacking tulip bulbs. Ithizcglgplnis eelii- 

 iiopiis is also mentioned as an important enemy of the bulbs of tidips, hyacinths, 

 nud other liliaceous plants. Glijcypliagus spinipes has appeared in a number of 

 instances as a serious house pest occurring in large numbers and attacking the 

 horsehair or other material used in upholstered furniture. 



Experiments in the control of Tinea pellionella, L. Koussin (Rev. Serr. 

 Intend. Mil. [fdris], 20 (1901), No. 155, pp. 37 S-.i9 6) .—The appearance of this 

 insect in its different stages is described in detail. A number of insecticides 

 were tested in determining their effectiveness in controllng the pest. From a 

 series of observations and experiments reported by the author it appears that 

 benzine, turpentine, naphthalin. camphor, carbolic acid, and a number of other 

 volatile substances of this class may produce asphyxia of the insect in woolen 

 fabrics. The remedies mentioned give satisfactory results as used against all 

 stages of the insect. Metallic salts such as arsenious acid, corrosive sublimate, 

 and suli)hate of copi)er are only slightly effective, while bitter substances such 

 as aloes and extract of gentian have no effect whatever. The best results are 

 to l)e ol)tained from the use of ordinary illuminating gas or bisuli>hi(l of carbon. 

 Either of these substances is i)erfectly effective. 



