320 Insecta. 



989) Wilderinnth, V.L., Three-Cornered Alfalfa Hopper. In: Jour. Agr. Research, 

 Vol. III, No. 4, S. 343—362, Jan. 1915. 



This paper deals with the economic importance to alfalfa crops of tue three cor- 

 nered alfalfa hopper, Stictocephala f'estina. The life history and habits of the pest are 

 given in detail. Pearl. 



990) rhapman, R. ^V., Observations on the Life History of Agrilus Bilineatus. 

 In: Jour. Agr. Research, Vol. HI, No. 4, S, 283—295, Jan. 1915. 



In this paper are reported new observations on the life history and ecologic rela- 

 tions of Agrilus bilineatus. The egg-laying habits, leaf-eating habits of the adult, the 

 eggs and newly hatched larvae are described in some detail. Pearl. 



091) Gaige, F. M., Description of a New Subspecies of Pogonomyrmex occi- 

 dentalis Cresson from Nevada. See Proc. Biol. Soc. Washington, Vol. XXVIII, 

 S. 93—96, May 1914. 



In this paper is given a description of a new subspecies of ant {Pogonomyrmex 



occidentalis ruthveni) and its habits. Pearl. 



992) Fox, Carrol, Some New Siphonaptera. In: U. S.Public Health Service 

 Bul. No. 97, S. 7—17, Oct. 1914. 



In this paper a new genus of Siphonaptera is described, Rooseveltiella, and 

 the following new species: Rooseveltiella georychi, Xenopsylla procaviae, JRlinpalop- 

 syllus gwyni, Doratopsylla blarinae, Ceratophyllus sümsoni, Ceratophyllus apaclnnus, 

 Ceratophyllus gibsoni, Jschnopsytius texanus. Pearl. 



993) Fox, Carrol, A Further Report on the Identification of Some 

 Siphonaptera from the Philippine Islands. In: Bull. U. S. Public Health 

 Service, No. 97, S. 18, Oct. 1914. 



A Statistical study of the host and sex distribution of Xenopsylla cheopis Roth- 

 schild, Cfenocephallus felis Bouche and Pulex irritans Linn. carried on in the Philip- 

 pines. Pearl. 



994) Stellwaag, F., Sperrtriebe am Skelett des Käfers. In: Mhf. f. d. 

 naturw. Unterr. S. 391—400, mit 15 Abb. 1915. 



„Überall dort, wo es erforderlich ist, einen Körperteil dauernd in ein und 

 derselben Stellung zu halten, findet man diese Arbeit den Muskeln durch Sperr- 

 vorrichtungen abgenommen oder erleichtert." Bau und Funktion solcher Sperr- 

 triebe werden am Körper von Dyüscus marginales erläutert. Loeser. 



995) Schäffer, C, Experimentelle Untersuchungen an der Stabheuschrecke 

 Prisomera amaurojys Westw. (-Dixippus morosus). In: Monatshft. f. d. naturw. 

 Unterr. S. 131—137. 1915. 



Ein Literaturbericht über die Ökologie und Physiologie der leicht zu haltenden 

 Versuchstiere. Loeser. 



996) Kelly, E. 0. GL, A New Sarcophagid Parasite of Grasshoppers. In: 

 Journ. Agr. Research, Vol. II, No. 6, S. 435—447, Sept. 1914. 



In this paper a new sarcophagid, Sarcophaga kellyi, is described together 

 with field studies of sarcophagids, experiments in rearing them, and their use ia 

 Controlling cutbreaks of grasshopers. Pearl. 



997) Brooks, F. E., Apple Root Borer. In: Journ. Agr. Research, Vol. HI, 

 No. 2, S. 179—185, Nov. 1914. 



In this paper are described the life history and habits of the apple-root> 

 borer Sapercla Candida Jak, its natural enemies and methods of control. 



Pearl. 



