1019] ECONOMIC ZOOLOGY — ENTOMOLOGY. 651 



Observations on the insect parasites of some Coccidae. — II. On chalcid 

 parasites of Lecanium capreae, A. I ». Imms (Quart. Jour. Micros. Boi. [London}, 



n. tor., 85 (1918), \o. 251, pp- 293-374, figs. 85).— This sec 1 paper (EL S. EL, 



37, p. 59) deals with two Important chalcid parasites of L. eaprew, namely, 



Blastothria hritannica ami Aphycus melanottomaUU. A bibliography of 28 

 titles is Included. 



Three new lachnids with comparative notes on three others, H. F. Wir.soN 

 (i:,it. \, -irtt. SO (1019), No. 1, pp. 1-7, pis. 2).—Essigella pini collected on FffHM 

 vtrginiana at Plnmmen Island. Md.; L'uiachnus thunbergii on twigs of Beta- 

 dopityt verticillata and P. thunbergii In Tokyo, Japan; and Lachmu ftmiperi- 

 voru on Juniperut rirt/iniana on Hummers Island, Md., are described as new. 

 Tin- genus Unllachnus Is erected for Lachnus parvus of Wilson. 



Some scale insect pests of coffee in South India, L. C. Coleman ami K. 

 Ki mm Ka.nwan (Dipt. Agr. Mysore, Ent. Set: Bui. 4 (1018), pp. 67, pis. 5, flgt. 

 17). — The greater pari of this work deals with the "preen bug," a term which 

 stands for a number of distinct species of soft scales, including the Ceylon form 

 (Coccus viri(ti-s) and the Mysore form, first discovered in 1913 and described 

 by the junior author in 1917 as representing a new species, C. COlemani. 



It is pointed out that the green bug, which is variable in its behavior, was 

 almost certainly introduced into the Coffee estates in Mysore from Bangalore. 

 It is spread by wind, fallen leaves, birds, ants, etc. There are two fungi which 

 are very effective checks in its multiplication in Mysore, provided the monsoons 

 are regular and normal, namely, the white fungus (Ccphalosporium Icvanii) 

 and the may or black fungus (Empusa lecanii). When and where the mon- 

 soons are deficient so that the fungi do not operate or operate but feebly, it is 

 recommended that spraying and brushing be employed, fish-oil resin soap used 

 at the rate of 1 lb. to 2 gal. of water being the best insecticide. All nests of 

 attending ants should be systematically destroyed and fungi should be spread 

 over the estate immediately after their appearance by tying up branches con- 

 taining them to trees which do not show them. 



The other cocci ds considered Include the hemispherical scale and green mealy 

 scale or mealy bug (Pulrinaria psiilii). 



The black scale of the olive, C. Camacho (La Cochinilla Ncgra del Olivo 

 Baissetia <>lcw (Lecanium olece). Santiago, chile: Serv. Pol. Sanit. Vejetui, 

 1917, pp. .?, i>l. /•), — A brief description is given of this scale and means for its 

 control in Chile, where it is an important enemy of the olive. 



Preliminary report on carbon tetrachlorid vapor as a delousing agent, 

 M. II. Foster (Pub. Health Rpts. [U. 8.], 33 (1918), No. 43, pp. 1823-1827).— 

 In the search for a practical method of destroying lice which can be applied 

 with a simple apparatus and will not Injure woolen fabrics, the author experi- 

 mented with carbon tetrachlorid. 



The pure vapor was found to kill unprotected lice in 15 minutes but failed to 

 destroy them in 10 minutes. It was much more toxic than either gasoline or 

 chloroform. For 100 cu. in. of space occupied by clothing 1.82 cc. of carbon 

 tetrachlorid, or 30.5 cc. to the cubic foot, with 2 hours' exposure, was found to 

 be required to destroy the lice. The ova were not killed at this strength. 



It is pointed out that there is no intention of substituting carbon tetrachlorid 

 for heat and cyanid gas treatments, where these are available, since they are 

 much more economical where large quantities of clothing are to be deloused at 

 one time in one place. 



Cattle lice and their control. G. H. Lamson, jr. (Connecticut Storrs Sta. 

 Bui. 97 (1918), pp. 395-41.',. tips. 9).— Three species of lice are here considered, 

 two of which, the short-nosed cattle louse (Ilamatopinus curusternus) and the 



