\.\\ii. '21] OGICAL .\FAYS 121 



Cicadas Make Final Moult Upon Leaves of Trees (Homop.). 



Ordinarily cicadas make the final moult upon trunks of trees, tele- 

 phone poles, fence posts and similar elevated, rather firm structures ; 

 but during last August the authors took cast skins of the last moult of 

 cicadas from the leaves of numerous trees, among them linden, chestnut, 

 maple, oak, elm and catalpa. 



Many spent skins were noticed upon the trunks of some trees, and 

 they occurred at miscellaneous places upon the leaves, such as upon the 

 petioles and various places upon the hlades. As many as three skins 

 were seen upon a single leaf, some upon the lower surfaces and some 

 upon the upper. Usually the leaves were from twenty to thirty feet 

 from the ground, although some were lower and some were higher, and 

 the skins were not nearly as common upon leaves as they were upon the 

 trunks and branches. Most of the skins which were found upon the 

 leaves were headed toward the petiole or stem end. 



Since we did not see the adult insects which emerged from the spent 

 skins we do not know the species. We do not know this habit to be 

 common to any one particular species of the family Cicadidae. VERNON 

 R. HABER and W. BRUCE MABEE, Division of Entomology, Dept. of 

 Agriculture, Raleigh, North Carolina. 



Entomological Literature 



COMPILED BY E. T. CRESSON, JR., AXD J. A. G. REHX. 



I'mler the above head it is intended to note papers received at the 

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

 ti mology of the Americas (North and South), including Arachnida and 

 ilyriopoda. Articles irrelevant to American entomology will not he noted: 

 but contributions to anatomy. physiology and embryology of insects. 

 however, whether relating to American or exotic species, \vill he recorded. 



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

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



All continued papers, with fe\v exceptions, are recorded only at their 

 first installments. 



The records of pa]>< : < iiaining new genera or species occurring north 

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



For records of Economic Literature, see the Experiment Station Itecord. 

 Office of Experiment Stations, Washington. Also Review o( Applied En- 

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

 mology, see Review of Applied Entomology, Series B. 



The titles occurring in the Entomological News are not listed. 



4 Canadian Entomologist, London, Canada. 5 Psyche, Cam- 

 bridge, Mass. 9 -The Entomologist, London. 10 Proceedings of 

 the Entomological Society of Washington, D. C. 11 Anr.als and 

 Magazine of Natural History, London. 15 ln>ecutc>r In.-dtiac 

 Mcnstruus, Washington, D. C. 20 Bulk-tin de la Societc Entomo- 

 logique de France, Paris. 39 The Florida Entomologist, (iaincs- 

 villc. 45 Zeitschrift fur \vi>scn>cl:afllichc Insekti-nhiologie, Berlin 

 48 Wiener Entomologische Zeitung. 49 --Fntonn. e Mit- 



u-ilun.uen, Berlin-Dahlem. 57 Biologisches /.cntra.Matt. I. dp 



