560 



SCIENCE. 



[N. S. Vol. I. No. 20. 



but partially filled by glacial material. The 

 present course of the Missouri, for some dis- 

 tance below the cataracts, is cut in black 

 shales of the Fort Benton period, capped 

 by 100-250 feet of glacial till and silt. 

 Whitman Ceoss, 



Secretary. 



ENTOMOLOGICAL SOCIETY OF WASHINGTON. 



The 108th regular meeting was held May 

 3d. Mr. L. 0. Howard read a paper en- 

 titled ' Some New Scale Parasites,' in 

 which he discussed several species of the 

 family Chalcididse which are new to sci- 

 ence, and which are important pai-asites of 

 destructive scales. A paper entitled ' Two 

 Leaf-beetles that Breed on the Golden-rod,' 

 by F. H. Chittenden, was read by title, and 

 another, ' Sexual Dimorphism in the Scoly- 

 tid Genus Xyleborus,' by E. A. Schwarz, 

 was also read by title and referred to the 

 committee on publications. Mr. Ashmead 

 presented a communication on Lysiognatha, 

 a new and remai-kable genus in the Ich- 

 neumonidse. The form described was an 

 extraordinary one, possessing the head and 

 jaws of the Braconid sub-family Alysiinse, 

 the wings and remainder of the body re- 

 sembling those of the Ichneumonid sub- 

 family Ophioninse. Mr. Ashmead con- 

 sidered it typical of a new sub-family of the 

 Ichneumonidse. Dr. Theodore Gill ex- 

 pressed himself as of the opinion that the 

 form is really typical of what should be a 

 new family. A note from Mr. H. G. Bar- 

 ber, of Lincoln, Neb., a corresponding mem- 

 ber of the Society, was read by the secre- 

 tary. The note was entitled ' Food-habits 

 of Hypatus baehmanni.' This butterfly, 

 which has recently been observed migi-a- 

 ting in great numbers in the Southwest, has 

 been previously supposed to feed only on 

 species of Celtis. Mr. Barber considers 

 Symphoricarpos to be probably its favorite 

 food plant. Mr. W. T. Swingle made some 

 remarks on the effects of the December and 



February freezes in Florida upon the in- 

 sects injuring the orange. The really im- 

 portant insects, namely, the red scale and."-^ 

 the white fly, have been seriously checked. 

 All specimens occurring upon foliage have 

 been killed. In discussing this paper, Mr. 

 C. L. Marlatt called attention to the fact 

 that the serious injury to the trees caused 

 by the cold has already resulted in the ap- 

 pearance of a number of bark-boring beet- 

 les, which will undoubtedly do much dam- 

 age during the next two or three years. 

 L. O. Howard, 

 Recording Secretary, 



NEW BOOKS. 

 Proceedings of The American Association for 



the Advancement of Science for the Forty-third 



Meeting held in Brooklyn, N. Y., AugtiM,. 



1894- Salem, The Permanent Secretary. 



1895. Pp. xiii -f 486. 

 Der G-ute Geschmack. Lothab Abel. Vienna, 



A. Hartleben. Pp. vii + 368. 

 The Geological and Natural History Survey of 



Minnesota, Vol. III., Part I., Paleontology, 



N. H. "WiNCHELL. Minneapolis, Minn., 



Harrison and Smith. 1895. Pp. Ixxv -f 



474. 

 John Dalton and the Rise of Modern Chenmtry, 



SiE Heney E. Eoscoe. London and New 



York, Macmillan & Co. 1895. Pp. 212. 



$1.25. 

 Missouri Botanical Garden. Sixth Annual 



Report. William Teelease. St. Louis, 



Mo., The Board of Trustees. 1895. Pp. 



134. 

 The Origins of Invention. Otis T. ISLiSON.. 



London, Walter Scott; New York, 



Charles Scribner's Sons. 1895. Pp. 413. 



$1.25. 

 Chemical Analysis of Oils, Fats and Waxes, 



From the German of Peofessoe De. R. 



Benedict. Revised and enlarged hj De. 



J. Lewkowitsch. London and New 



York, Macmillan & Co. 1895. Pp. xviiL 



+ 683. $7.00. 



