Vol. XXviiJ ENTOMOLOGICAL NEWS. 333 



A Remarkable Abdominal Structure in Certain Moths (Lepid.). 



In Papilio, III, 41, 1883, R. H. Stretch published an article entitled 

 "Anal Appendages of Lcucarctia acraca" and figured the appendages. 

 In ENTOMOLOGICAL NEWS, XXVI, 166, 1915, F. W. Russell, M.D., pub- 

 lished a paper entitled "A Remarkable Abdominal Structure in Cer- 

 tain Moths." This also was illustrated. Both observers described this 

 curious organ in acraca. The species is a common one and the insect 

 evidently only protrudes the organ on special occasions, otherwise it 

 would be more commonly observed. At the time Dr. Russell made his 

 observation he was not aware that the organ had been previously 

 known and described.* HENRY SKINNER. 



Entomological Literature. 



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, how- 

 ever, whether relating to American or exotic species, will be 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 few exceptions, are recorded only at their 

 first installments. 



The records of papers containing new species are all grouped at the 

 end of each Order of which they treat. Unless mentioned in the title, 

 the number of the new species occurring north of Mexico are given at 

 end of title, within brackets. 



For records of Economic Literature, see the Experiment Station Record, 

 Office of Experiment Stations, Washington. Also Review of Applied Kn- 

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

 mology, see Review of Applied Entomology, Series B. 



1 Proceedings, Academy of Natural Sciences of Philadelphia. 

 4 The Canadian Entomologist. 9 The Entomologist, London. 

 11 Annals and Magazine of Natural History, London. 16 Bul- 

 letin, Societe Nationale d'Acclimatation de France, Paris. 50 Pro- 

 ceedings, U. S. National Museum. 51 Novitates Zoologicae, 

 Tring, England. 60 Anales, Museo Nacional de Buenos Aires. 

 79 La Nature, Paris. 86 Annales, Societe Entomologique de 

 France, Paris. 161 Proceedings, Biological Society of Washing- 

 ton. 177 Quarterly Journal of Microscopical Science, London. 

 184 Journal of Experimental Zoology, Philadelphia. 206 The 

 Scottish Naturalist, Edinburgh. 259 Publications, Carnegie In- 

 stitution of Washington. 272 Memorias, Real Academia de Cien- 

 cias y Artes de Barcelona. 285 Nature Study Review, Ithaca, 

 N. Y. 291 Proceedings, Staten Island Association of Arts and 

 Sciences. 447 Journal of Agricultural Research, Washington. 



* See also Papilio, III, 84, 1883. 



