658 EXPERIMENT STATION RECOED, 



Biology of the Thysanoptera, A. F. Shull (Amer. Nat., 48 (lOlJf), No. 567, 

 pp. 161-176). — This first part relates to the factors govemiug the local dis- 

 tribution of thrlps. 



Two new Thysanoptera from Porto Rico, J. D. Hood (Insecutor Inscitiw 

 Menstruus, 1 {1013), No. 6, pp. 65-70, pi. l).—Bcterothnps sericatus from the 

 flowers of guava {Psidium guajava) at Rio Piedras and Podothrips semiflavus 

 from "para grass" (Panivum barbinode) at Guanica are described as new to 

 science, the latter also representing a new genus. 



On a collection of Thysanoptera from Porto Rico, J. D. Hood {Insecutor 

 Jnsciiiw Menstnius, 1 {1913), No. 12, pp. lJfO-15Jf, pi. ./).— Six species are here 

 added to the known thysanopterous fauna of Porto Rico of which Dinuro- 

 thrips hookeri, collected from Ipomoea sp. at Mayaguez, represents a new genus 

 and species. It is pointed out that Gynaikothrips uzeli, a serious pest of the 

 fig {Ficus spp.), appears to have been collected on tobacco in Porto Rico and 

 may become of considerable economic importance. 



Prosopothrips cog-natus, a new North American thysanopteran, J. D. Hood 

 {Canad. Ent., 46 {1914), No. 2, pp. 57-59, flfj. 1).—P. cognatus, the species here 

 described as new, was taken on wheat at Wellingwn, Kans. 



The wheat louse (Toxoptera g-raminum), W. Moore {Agr. Jour. Union So. 

 Africa, 6 {1913), Nos. 3, pp. 482-492, figs. 12; 5, pp. 767-772; 6, pp. 973-977; 

 7 {1914), No. 1, pp. 50-60). — A general account of this pest, its occurrence in 

 South Africa, natural enemies, and control measures. 



A new American Phlebotomus, F. Knab {Insecutor Inscitiw Menstruus, 1 

 (1913), No. 11, pp. 135-137, fig. 1). — P. atroclavatus n. ?p. is said to be of eco- 

 nomic importance in Trinidad, where it occurs associated with man. 



Preliminary characterization of the vector of verruga, Phlebotomus ver- 

 rucarum n. sp., C. H. T. Townsend {Insecutor Inscitiw Menstruus, 1 {1913), 

 No. 9, pp. 107-109, pi. 1). — The species here characterized for the first time has 

 been found by the author to be the vector of verruga. 



On the identity of verruga and Carrion's fever, C. H. T. Townsend (Sci- 

 ence, n. ser., 39 (1914), No. 994, pp. 99, 100).— This paper includes data relating 

 to Phlebotomus verrucarum as an intermediate host of verruga infection. 



Human case of verruga directly traceable to Phlebotomus verinicarum, 

 C. H. T. Townsend {Ent. News, 25 (1914), No. 1, p. 40). — The author reports 

 upon the occurrence of this disease in his assistant in the verruga work, the 

 cause of which he considers to be directly traceable to the bites of P. verru- 

 carum. 



Mosquitoes pollinating orchids, J. S. Dextee {Science, n. ser., 31 (1918), 

 No. 962, p. 867). — The author reports observations which indicate that the 

 orchid Habernaria obtusata may be cross-fertilized by mosquitoes. 



Further reports on flies as carriers of infection (Rpts. Local Govt. Bd. [Gt. 

 Brit.], Pub. Health and Med. Siihjs., n. ser., No. 53 (1911), pp. 48, fig. !)•— 

 Four papers are presented in this fourth report (E. S. R., 25, p. 260), namely, 

 An Experimental Investigation on the Range of Flight of Flies, by S. M. Cope- 

 man, F. M. Howlett, and G. Merriman (pp. 1-10) ; Memorandum on the Result 

 of Examinations of Flies, etc., from Postwick Village and Refuse Deposit, with 

 a Note on the Occurrence of the Lesser House Fly at Leeds, by E. E. Austen 

 (pp. 11, 12) ; On the Part Played by Flies in the Dispersal of the Eggs of 

 Parasitic Worms, by W. NicoU (pp. 13-30) ; and Further Observations on the 

 Ways in Which Artificially Infected Flies (Musca domestica and CalUphora 

 erythrocephala) Carry and Distribute Pathogenic and Other Bacteria, by G. S. 

 Graham-Smith (pp. 31-48). 



The study of the r61e played by flies in the dispersal of the eggs of parasitic 

 worms is summarized as follows : " Flies may convey eggs from excrement to 



