ECONOMIC ZOOLOGY KN'l < »M< >L< •« - Y. 477 



and other symptoms. The author believes, therefore, that -mum- precaution must be 

 observed in the use of these cultures in order to avoid the infection of farm animals. 



Entomological department, II. \. Cooler \fontana Sta. Rpt. 1904, /'/•■ 

 _'.;.' i. < rrasshoppers were less injurious than in previous years. A test of the < riddle 

 mixture gave somewhat unsatisfactory results in the hands of ranchers. Some injury 

 was caused to apple trees bj a cicada I Tibicen cruentifera). Notes are also given on 

 Bpotted blister beetle, apple aphis, cabbage aphis, field mice, and honej be 



A circular of information, .1. Kotinsk^ i Bd. Comrs. Agr. and Forestry Hawaii, 

 Ttii . Ent. ( ire. 1, pp.8). The work of the division of entomolog) is briefly described, 

 with notes on the collection and study of insects. 



The western cricket, ( '. P. Gillette and S. A. Johnson I Colorado Sta. Bui. 101, 

 />/>. 16, pis. .' . Anabrus simplex first attracted attention as a pest in Colorado in 1904. 



The eggs are deposited about July 1. to a depth of about I in. preferably on hills. 

 In some cases 2,000 to 3,000 eggs were counted per square fool of soil. The crickets 

 feed "ii range grasses, sage brush, cereals, alfalfa, potatoes, garden vegetables, etc. 

 The pests may be herded away from cultivated crops or may be kept away by ditch- 

 ing or fencing. Tney may also be killed with kerosene, crude oil, or poisoned bait 

 Plowing, burning, and crushing are also mentioned as remedies. Certain dry hills 

 Beem to constitute the permanent home of the pests, but migration takes place when 

 the eggs hatch in large numbers. The insects travel only by daylight. 



Leaf hoppers and their natural enemies, IJ. C. L. Perkins I Hawaiian Sugar 

 Planters 1 Sta., Div. Ent. Bui. l. pis. /. pp. 1-70; 2, pp. 71-85, pi. 1; 8, pp. 86-U8,pls. 

 4; 4, pp. 119-158, pis. 8). — The parasites of leaf hoppers considered in the first part 

 belong to the family Dryinidse. 



This family appeai-s to confine its attacks t<> leaf hoppers. A detailed description 

 is given of the method of attack, the effectiveness of these parasites in controlling 

 the leaf hoppers, and other points in their life history. In this discussion the genus 

 Echthrodelphax and other related genera are taken as typical cases. Apparently 

 all leaf hoppers which become parasitized with Dryinidse are ultimately thereby 

 destroyed. The anatomy of these parasites is discussed, and a systematic accounl is 

 presented to assisl in the identification of species, many of which are described 

 as new. 



Agamopsyclu threnodes, described in detail in the second part, is parasitic on the 

 BUgar-cane leaf hopper and appears to be parthenogenetic. Sometimes more than 

 one larva is found on a single leaf hopper, but perhaps only one reaches maturity. 



The parasite is referred to a new family descrihed under the name Epipyropidse, 



and several other new specie- of this family are described under the genera Paleo- 

 psyche and 1 leteropsyche. 



In the third part the anatomy, systematic position, and life history of the Stylopidse 

 are discussed, with notes on the effect of their parasitism on leaf hoppers. The male 

 parasites usually have a more serious effect on the host than do the females, and the 



hosl is killed. The genera Balictophagusand Elenchus are defined and notes given 

 on the larvse and puparia of Stylopidse. Various species of these genera are described, 

 many of them as new. 



The fourth part is devoted to a consideration of the family Pipunculidte. The 

 majority of species in this family belong to the genus Pipunculus, and aboul 80 

 species have been recorded for this genus. The Hies under discussion are parasitic 

 on various families of Homoptera, including Cercopidse, Jassidse, and Fulgoridse. 

 The anatomy and life history of the genus is discussed in some detail for different 

 stages. A. number of species from Australia and Hawaii are described a- new, and 

 an analytical table is presented to assist in their ready identification. A brief bibli- 

 ography of the subjecl is appended to the bulletin. 



Late fall spraying for the San Jose scale, J. B. Smith i New Jersey Stas. Bui. 

 186, pp. 14,figs. 6). — Test* were made of the effectiveness of insecticide application 





