no ENTOMOLOGICAL NEWS [April, '20 



cyphona) rubia, described in 19 14 from a unique taken in Arizona. Our 

 insect is manifestly the same, and is a striking addition to the Colorado 

 list. The original figure does not show clearly that the wings are broadly 

 white at base. On the left side only, the specimen before me has an oval 

 white spot at the origin of the sector; this is lacking in the type. It is 

 a singular thing, that whi'.e Erioptera and its various subgenera or closely 

 related genera are today well represented in North America, no trace of 

 them has been found in the rich Miocene deposits at Florissant, nor in 

 the older Eocene rocks of Colorado and Wyoming. They are, however, 

 found fossil in Europe, so it seems probable that the group originated in 

 the Old World. 



T. D. A. CocKERELL, Boulder, Colorado. 



Kntomological 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 Natura 

 Sciences, of Philadelphia, pertaining to the Entomology of the Americas (North and 

 South), including Arachnida and Myriopoda. Articles irrelevant to American ento- 

 mology will not be noted; but contributions to anatomy, physiology and embryology of 

 insects, however, 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 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 Experiment Station Record, Office of Ex- 

 periment Stations. Washington. Also Review of Applied Entomology. Series A, London. 

 For records of papers on Medical Entomology, see Review of Applied Entomology, Series B. 



4 — Canadian Entomologist, London, Canada. 8 — The Entomolo- 

 gist's Monthly Magazine, London. 10 — Proceedings of the Entomologi- 

 cal Society of Washington, D. C. 11 — Annals and Magazine of Natural 

 History, London. 14 — Proceedings of the Zoological Society of London. 

 16 — The Lepidopterist, Salem, Mass. 20 — Bulletin de la Societe Ento- 

 mologique de France, Paris. 21 — The Entomologist's Record, London. 

 22 — Bulletin of Entomological Research, London. 23 — Bollettino del 

 Laboratorio di Zoologia Generate e Agraria, Portici, Italy. 28 — Ento- 

 mologisk Tidskrift, L^ppsala. 29 — Annual Report of the Entomological 

 Society of Ontario, Toronto, Canada. 44 — Ectoparasites. Edited by 

 Jordan & Rothschild, Tring, England. 59 — Journal of Agricultural Re- 

 search, Washington, D. C. 88 — Occasional Papers of the Museum of 

 Zoology, University of Michigan, Ann Arbor. 106 — Anales de la Sociedad 

 Cientifica Argentina, Buenos Aires. 



GENERAL. Anon — Entomology in the United States National 

 Museum. 68, li, 236-37. Mallock, H. R. A. — ^Some points in insect 

 mechanics. 14, 1919, 111-116. Silvestri, F. — Contribuzioni alia cono- 

 scenza degli insetti dannosi e dei loro simbionti. 23, xiii, 70-192. Till- 

 yard, R. J. — The panorpid complex. The wing-venation. 29, xliv, 533- 

 7i<S. Tragardh, I. — On the use of e.xperimental plots when studying 



