1919] EC0NO.\m; ZOOI.OOY KNTOlVIOr.OGY. 847 



the worker, by K. Meier, and (5) with general concluding considerations, in- 

 cluding bibliographies of 51, 5, 10, 6, and 35 titles, respectively ; The Pine Spin- 

 ning Sawfly {Lyda hyiiatrophica) in Roggeuburg Forest, by Parst (pp. 

 75-96) ; Contribution on the Biology and Anatomy of the Pine Spinning Sawfly 

 (L. hypotrophtca=Cephalcia abietis), by F. Scheidter (pp. 97-116) ; A Con- 

 tribution on the Fly Problem, by A. Hase (pp. 117-123) ; The Biological Control 

 of the Mulberi-y or West Indian Peach Scale {Diasins pentagomi), by J. Bolle 

 (pp. 124-126) ; Fertilizing and Insect Attack, by L. Pteh (pp. 127-133) ; May- 

 beetle Control in Bienwald (Rliine Province) : A Model Example of Technical 

 Insect Control, by K. Escherich (pp. 13Jr-156) ; Tlie Pteronialid Genus Platy- 

 terma of Walker (1834) and a New Species [P. ecJcsteini] reared by C. Eck- 

 stein in Germany from Lophyrus pini, by M. Wolff (pp. 157-171) ; Tlie Con- 

 trol of Wood-boring Beetles (Anobium) in an Old Carving, by J. Bolle (pp. 

 172-178) ; Hylemyia coarctata, by R. Kleine (p. 179) ; and Notes on the Intro- 

 duction of Sericulture into Germany Based upon a Personal Knowledge of the 

 Biology of the Silkworm, by O. Maas (pp. 180-194). 



Some plagues of our cultivated crops, R. Akango {8ec. Agr. Com. y Trab., 

 Comision Saiiid. Vey. Cuba, Bui. 2 {1919), pp. 94, pi- 1, flys. JiS). — A descriptive 

 account of some of the more important insect pests and diseases of cultivated 

 crops in Cuba, including directions for their control. 



Contribution on the Javanese mole crickets, W. Roepke {Trenbia [Dutch 

 East Indies], 1 {1919), No. 2, pp. 90-97, fig. i).— The author reports upon investi- 

 gations of the mole crickets occurring in Java which represent two species, 

 namely, Gryllotalpa hirsnta and G. africana. 



[Thysanoptera of Florida], IV- V, J. R. Watson {Fla. Buggist, 2 {1918), 

 No. 3, pp. 97-102; 2 {1919), No. 4, pp. 116-119; 3 {1919), No. 1, pp. 2-5).— This 

 continuation of the paper previously noted (E. S. R., 40, p. 353) lists additional 

 species, making a total of 59. Six species are described as new and the genus 

 Megalomerothrips is erected. Keys to the genera of Phlceothripidse and to 

 species of Trichothrips, Haplothrips (Anthrothrips of Uzel), and Frankliniella 

 are included. 



Hemiptera collected by the Yale Dominican expedition cf 1913. E. H. Gib- 

 son {Proc. U. S. Nutl. Mus., 55 {1919), pp. 275-277). 



Notes on Gargaphia tiliae, the linden lace bug, H. B. Weiss {Proc. Biol. 

 !^oc. Wash., 32 {1919), pp. 165-168). — This is a report of observations made 

 during the summers of 1918 and 1919 at Uhlerstown. Pa., where the linden lace 

 l)Ug was fairly abundant on lindens. 



Eggs which are inserted in the lower leaf surface in clusters of from 60 or 

 less to 300 hatch in about a w^eek, and the combined nymphal stages require 

 about three v.-eeks, making a month from egg to adult. Adults of the first 

 brood appear during the last of June and first of July, while the adults of the 

 second generation hibernate and appear the following spring. Five nymphal 

 stages are described. 



Hyalopeplus smaragdinus n. sp., a new tea capsid in Java, W. Roepke 

 (Treubia [Dutch East Indies], 1 {1919), No. 2, pp. 73-81, figs. 7).— The species 

 here described was taken from a tea plantation in the vicinity of Soekaboemi, 

 Java. Notes on the life history of the species are included. 



The potato leaf hopper and the hopperburn that it causes, E. D. Ball (iris. 

 Der^t. Agr. Bui. 23 {1919), pp. 76-102, figs. 25).— This is a detailed report of an 

 investigation of Empoasca mali by the author, a brief preliminary account of 

 which has been noted from another source (B. S. R., 40, p. 353). 



The first report of the injury in Wisconsin, where serious loss resulted in 

 1917, is said to have been received just before the middle of July. Some of 

 the worst fields were alrealy dried up and dead, while others were so severely 



