850 EXPERIMENT STATION RECORD. [Vol.43 



In an introrliiction field investigations of the author and the work conducted 

 by others are considered. This is followed bj' an account of the physiography 

 of Panama and the faiinal relations, three life zones, namely, lower tropical, 

 upper tropical, and temperate, being considered. A list is given of the forms 

 recognized. A general account of the mammals, of which 175 .species and 

 subspecies are recognized, takes up the greater part of the work (pp. 44-235). 

 An annotated bibliography which comprises 77 titles of the principal pub- 

 lications bearing upon the mammals of Panama, especially those dealing ex- 

 clusively with species inhabiting the region, covering 10 pages (pp. 235-245), 

 and a general index of 43 pages, are included. A map 15 by 27 in. showing 

 the provisional life zones of Panama, prepared by the author, is attached. 



The review is by J. A. Allen. 



Plague in California ground squirrels, W. T. Hakrison (Mo. Bui. Dept. 

 Agr. Calif., 9 {1920), No. 5-6, pp. 187-194).— A brief discussion of the occur- 

 rence and eradication work with thig disease in the ground squirrel in Cali- 

 fornia. 



An introduction to entomology, J. H. Comstock (Ithaca, N. Y.: The Corn- 

 stock Pub. Co., 1920, 2. eel., pp. IX +220, figs. 220).— This first part of a second 

 fully rewritten edition of the work first published in 1888 deals with the struc- 

 ture and metamorphosis of insects. 



Proceedings of the Entomological Society of Nova Scotia for 1919 

 (Proc. Ent. Soc. Nora Scotia, No. 5 (1919), pp. 1-94, Pl^- 4)-— Papers presented 

 at the fifth annual meeting of this society include the following: The Chloral 

 Hydrate Method of Preserving Insects for Dissection, by J. D. Tothill (pp. 

 8-10) ; Notes on the Life History, Habits, and Control of the Pea Moth (Lrt.s- 

 peyresia nigricana Steph.), by W. H. Brittain (pp. 11-20) ; The Use of White 

 Arsenic as an Insecticide in Bordeaux Mixture, by G. E. Sanders and A. Kel- 

 sall (pp. 21-33) ; Notes on the Life History of Two Chrysomelids [GaleniccUa 

 6-vittata Lee, Chrysomela higsbyana Kirby], by W. E. Whitehead (pp. 34-40) ; 

 Experiments in the Control of the Cabbage Maggot (Chortophila brnssircr 

 Bouche), by W. H. Brittain (pp. 41-66) ; Notes on the Life History and Nynrphal 

 Stages of Entylia bactriana Germar, by W. E. Whitehead (pp. 67-72) : The 

 Occurrence of the Apple Sucker (Psyllia mali Schmidbg.) in Nova Scotia, by 

 W\ H. Brittain (pp. 73-76) ; and A Further Report of the New Copper — Arsenic 

 Dust, by G. E. Sanders and A. Kelsall (pp. 77-94). 



Factors influencing fumigation results, R. S. Woglum (Calif. Citrogr., 5 

 (1920), No. 11, p. 345). — This is an address delivered by the author in July, 

 1920, at Covina, Calif. 



[Economic insects in South Dakota] (State Ent. S. Dak. Circ. 1919, Nos. 

 9, pp. 10, figs. 2; 10. pp. 6, figs. S; 11, pp. 5, fig. 1; 12. pp. 6, figs. 2; 13, pp. 7, fig. 

 1; lit, pp. 8. fig. 1; 15, pp. 7. figs. 2; 16, pp. 6, figs. 5; 17, pp. .'/, fig. i).— These 

 circulars in continuation of those previously noted (E. S. R., 41, p. .58) deal with 

 Cabbage Worms, Currant and Gooseberry Worms, Currant and Gooseberry 

 Lice, The Striped Cucumber Beetle, The Colorado Potato Beetle, The Melon 

 Aphis, The Bean Weevil, The Potato Flea Beetle, and The Common Stalk Borer, 

 respectively, all by H. C. Severin. 



Annual loss caused through insects in British Guiana, L. D. Cleaee, jr. 

 (Jovr. Bd. Agr. Brit. Guiana, IS (1920), No. 3, pp. 115-126).— Thi» account in- 

 cludes a tabulated list of the produce and value of crops, with the loss due to 

 insects during the year 1917. 



" From the figures given it is estimated that the annual loss caused to 

 the colony through insect attacks on agricultural products is $4,280,702. With, 

 an estimated population of 300,000, this works out at an annual loss of $14 per 

 capita of the inhabitants." 



