Vol. XXx] ENTOMOLOGICAL NEWS 30I 



A recent (March 7, 1919) examination gives the following results: 



The wheat plants were well preserved in salicylic acid and formalin 

 solutions, hut the color badly faded and there was apparently no 

 difference in the hot and cold solutions. The corrosive sublimate- 

 glycerine mixture preserved the plants fairly well when used hot. but 

 those preserved in cold solution were blackened and rotten. The sul- 

 furous acid and zinc chloride solutions gave the best results, T)re- 

 serving the color of the foliage very well. In the case of the sulfur- 

 ous acid those preserved cold were apparently better. In the case of 

 zinc chloride it was impossible to determine the relative merits of the 

 hot and cold mixtures as the plants preserved cold were partly out of 

 the solution, causing them to fade somewhat. 



The army worms preserved in sulfurous acid and corrosive subli- 

 mate-glycerine solutions were in very poor condition. Salicylic acid- 

 alcohol preserved the larvae nicely and, although color is faded, the 

 markings are distinct. The cold solution apparently did not preserve 

 the form quite as perfectly, but the colors are better preserved. For- 

 malin preserved the shape, color and markings in fair condition, the 

 ones preserved hot being the better. Zinc chloride gave the best 

 results and the colors are well preserved, those preserved hot seeYn- 

 insjly the better. 



The need of preservatives which will preserve colors to a fair de- 

 gree and at the same time preserve the shape of plants and insects is 

 evident, and these notes are given in hopes other workers will have an 

 opportunity to test these and other solutions in comparison. From 

 the few tests we have made the sulfurous acid and zinc chloride solu- 

 tions prove to be fairly good plant preservatives, while zinc chloride 

 gives good indications as a preservative for larvae.— John J. Davis, 

 Riverton, New Jersey. 



Entomological Literattire. 



COMPILED BY E. T. CRESSON, JR., AND J. A. G. REHN. 



Under the above head it is intended to note papers received at the 

 Academy of Natural Sciences, of Philadelphia, pertaining- to the En- 

 tomology of the Americas (North and South), including Arachnida and 

 Myriopoda. Articles irrelevant to American entomology will not be noted; 

 but contributions to anatomy, physiology and embryology of insects, 

 however, whether relating to American or exotic species, will be re- 

 corded. 



The numbers in Heavy- Faced Type refer to the journals, as numbered 

 in the following list, in which the papers are published. 



All continued papeis, with few exceptions, are recorded only at their 

 Hrpt installments. 



The records of papers containing n«^w genera or species occurring north 

 of Mexico are all grouped at the end of each Order of which they treat. 



For records of Economic Literature, see the Experim*^nt Station Record. 

 Office of Experiment Stations, Washington. AIfo Review of Applied En- 

 tomology. Series A. London. For records of papers on Medical Ento- 

 mology, see Review of Applied Entomology, Series B. 



2— Transactions of The American Entomological Society, Phila- 

 delphia. 4 — Canadian Entomologist, London, Canada. 7 — Annals 

 of The Entomological Society of America, Columbus, Ohio. 8— 

 The Entomologist's Monthly Magazine. London. lO—Proceedings 

 of the Entomological Society of Washington, D. C. 11— .A.nnals 

 and Magazine of Natural History. London. 17— T.cpidoptera, Bos- 

 ton, MasN. 22 — Bulletin of Entomological Research. London. 29— 

 Annual Report of the Entomological Society of Ontario, Toronto. 



