1918.] ECONOMIC ZOOLOGY ENTOMOLOGY. 761 



tility of the higher fractions. High boiling point compounds are more toxic 

 than low boiling point compounds when used as contact Insecticides in the 

 form of an emulsion." 



The distribution of bird life in Colombia; a contribution to a biolo^cal 

 survey of South America, F. M. Chapman (Bui. Ainer. Mus. Nai^ Hist., 36 

 (1917), pp. X+729, pis. 41, figs. 21).— This report, based on 15,775 birds col- 

 lected in Colombia, forms a part of an intensive zoological survey of South 

 America, commenced by the American Museum of Natural History in December, 

 1910. 



The first part of the work (pp. 3-169) includes ^ review of Colombian or- 

 nithology, a report on the American Museum's expeditions in Colombia, an out- 

 line of Colombian topography, remarks on the distribution of forests, notes on 

 the climatology, the life zones of the Colombian Andes, the Tropical and Sub- 

 tropical zones and their faunas, the Central Ajnerican extension of the Sub- 

 tropical Zone, the Temperate and Paramo zones, a tabular synopsis showing 

 the zonal distribution of families of Colombian birds, etc. The second part 

 (pp. 170-639) consists of a distributional list of birds collected in Colombia by 

 the Ajnerican Museum's expeditions in which 1,285 forms are represented. 



A gazetteer of Colombian collecting stations, a list of 24 of the more impor- 

 tant faunal papers relating to Colombian birds, and a subject index are 

 appended. 



Three new Mallophaga from North. Am.erican birds, E. A, McGeegob (Ent. 

 News, 28 (1917), No. 10, pp. Jt3S-If37, pi. 1). — Goniodes zenaidurcB from a mourn- 

 ing dove (Zenaidura macroura) at Aberdeen, S. Dak.; Lwmobothrium thter- 

 medium from the sparrow hawk (Falco sparverius) from Minnesota and 

 Uvalde, Tex. ; and Physostomum melospizoB from the song sparrow (Melospiza 

 tnelodia), St. Anthony Park, Minn., are described as new. 



Eight new Mallophaga of the genus Lipeunis from North American 

 birds, E. A. McGeegoe (Psyche, 24 (1917), No. 4, pp. 105-117, pis, S). 



Field book of insects, F. E. Lutz (New York and London: G. P. Putnam' $ 

 Sons, 1918, pp. X+509, pis. 24, figs. 628). — This pocket handbook deals with the 

 more common insects under their respective orders and families, with special 

 reference to those of northeastern United States. Keys are given for the 

 separation of many of the groups, together with illustrations, many of which 

 are in color. Habitat and plant and entomological indexes are included. 



Report of the entomologist, R. H. Van Zwaluwenbitbg (Porto Rico Sta. 

 Rpt. 1916, pp. 25-28, pi. 1). — Work witl^ ticks has shown both ifargaropus an- 

 nulatus and M. annulatus australis to infest cattle on the island, the latter 

 being much the more common. From 20 to 22, days were required Ifor the 

 development of M. annulatus australis upon the host at Mayaguez. Under nat- 

 ural conditions at an average mean temperature of 74.7° F. in February the 

 incubation period of the egg was 3G days, and at an average mean tem- 

 perature of 79.6° in September, 23.5 days. The maximum longevity of larvae 

 hatching in April was 94 days under natural conditions and 108 days when pro- 

 tected from rain and direct sunlight. 



In collections made during the spring fight both sexes of the large common 

 species of Lachnosterna were attracted to the light of a 400 candlepower gaso- 

 line lamp in about equal numbers, only 17 per cent of the females collected 

 having completed oviposition. 



A dark-brown cricket (Amphiacusta caraibea) severely injured seedlings of 

 various kinds in the station plant houses. As many as 59 eggs were laid by one 

 female in captivity, the eggs hatching in about a month. Flour and Paris green 

 were used with success in controlling it. 



