1920] ECONOMIC ZOOLOGY — ENTOMOLOGY. 851 



Some potato inserts and how to fight thorn successfully, C. H. HAni.KY 

 (Potato Map., S {1920), Ao. 1, pp. 6, 7, 86, flg.s. J).— This is a popular account. 



Annotated list of the injurious and beneficial insects of the avocado in 

 Florida, G. F. Mo/nettk {Flu. Buygisi, 3 (1919), No. 3, pp. ^5-//«).— The pests 

 of the avocado briefly considered include the avocado white fly (Trialcurodcs 

 ftoridcnsi-s Q.) ; avocado red .spider mite (TctranycliuH yotliersi McG.) ; green- 

 house thrips; dictyosperniuni scale (ChrysomphaJufi dictyospermi IMorg. ) ; 

 black scale; co.-onut nicaly bug (Pseudococrus nipie Mask.); pyriforin scale; 

 Fninklmiclla ccphdlica nuiaonii Watson; avocado leaf hopper (Empoasca minu- 

 onla Ball) ; avocado leafroller (Gracilaiia sp.) ; cotton staiiier {Dysdercus 

 sulnrellus H. Schf.) ; avocado tingid (Acysta perseoe Held) ; Anomala undulata 

 Mels. ; Caulophilus latinasus; Sparganothis (Platynata) sp. ; Lypsimena fuscnta 

 Lee; ElapTiidUm inerme Newin. ; and several insects of minor importance. 

 Beneficial insects are also listed. 



Orthoptera of Northeastern America, W. S. Bt^atciiley (Indiaiuipolift, 

 Ind.: The Nuturc Pub. Co., 1920, pp. 784. pl- 1, fios. 25J, ; rev. in Ent. News 31 

 (19.i0), pp. 2,i')-.i37). — This manual is an outgrowth or expansion of the author's 

 Orthoptera of Indiana * published in 1903 and long since out of print. It aims 

 to furnish means for identifying any species of orthoptera occurring in the 

 United States east of the Mississ-ippi River and Canada, east of the ninetieth 

 meridian. Keys to families, subfamilies, tribes, genera, and species are an im- 

 portant feature. Three hundred and fifty-three species and .58 varieties are 

 recognized. The area and life zones covered are briefly considered. Following 

 ilie de.scription of each species are notes on its distribution, food habits, song, 

 etc. A 21-page bibliography of the works cited, a glossary of terms used in 

 the text, an index to synonyms and new generic assignments as recognized in 

 the work, and a general index are included. 



The review is by J. A. G. R[ehn]. 



Coconut scale (Aspidiotus sp.) (Fiji Dept. Agr. Circ., 1 (1920), No. 1, pp. 

 6, 7). — Examinations made on the islands of Vatulele and Malolo resulted in 

 the finding of 22 scale-infested groves of coconut on Vatulele but none on the 

 two Malolo islands. Scale was also found on coconut on Yitilevu and 

 Wakaj'a. The leaf miner Proniccotheca reichii was found to be doing a great 

 (leal of Injury to coconut leaves on all the islands visited, on some palms prae- 

 tically every leaf being attacked. 



The relation of phototropism to swarming in the honeybee (Apis melli- 

 fera L.), D. E. Minnich (Psychobiology, 2 (1920), No. 2, pp. 177-180).— " The 

 evidence seems clear that although phototropism may be an important feature 

 of swarm behavior, it is neither peculiar to this activity nor the primary 

 causal agent of it." 



Classification and morphology of the bumble bees of central Europe, 

 E. ICkuger (Zool. Jahrb., Abt. System., Georg. u. Biol. Thiere, 42 (1920), No. 

 5-6, pp. 289-464, figs. 8).— Part I (pp. 292-371) of this paper deals with the 

 plastic characteristics of bumble bees, while Part II (pp. 372—162) consists of 

 descriptions of species of the genus Bombus, of which 33 are recognized. A 

 bibliography of 19 titles is included. 



The feeding habits of pseudomyrmine and other ants, W. M. Wheei.er 

 and I. W. Baiixy (Tnin.<i. Amer. Phil. Soc, n. ser., 22 (1920), No. 4, pp. 235- 

 279, pl.t. 5, figs. 6). — This account is based upon a review of the literature and 

 personal obsenation. A bibliography of 61 titles is appended. 



Scale insects of the Santa Cruz Peninsula, G. F. Ferris (Stanford ruiv. 

 Pub., Univ. Ser. Biol. Sci., 1 (1920), No. 1. pp. 57, figs. .'?5).— The author records 



Ind. Dept. Geol. and Nat Resources Ann. Rpt., 27 (1903), pp. 123-471. 



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