Vol. XXX I ENTOMOLOGICAL XEWS. 145 



United States and is sometimes of considerable economic importance 

 on the quince. It attacks fruit, leaf petioles, stems and thorns of 

 Crataegus, causing rough enlargements from which the long finger- 

 like aecia begin to break out the last of July or first of August. The 

 peridium or spore sac which covers the aecium is white and is filled 

 with a mass of orange-colored aeciospores. 



These itonid larvae live among the aeciospores and feed upon them. 

 Larvae collected August i were washed in alcohol to remove the spores 

 adhering to their moist cuticula and examined under the microscope. 

 The alimentary canal was found to be filled with the orange-colored 

 spores, and these caused the larvae to appear orange. The larva is 

 1.85 mm. long and 0.35 mm. broad at the middle when full grown. It 

 does not show the characteristic "breast bone" so commonly seen on the 

 larvae of this family. 



When infested fruit was placed on moist sand the larvae trans- 

 formed to adults on the surface of the sand and when infested fruit 

 was placed in a tin box with no earth or sand the larvae transformed 

 on the bottom of the box. This seems to indicate that under natural 

 conditions the larvae go to the surface of the ground to pupate. 

 Larvae which were brought into the laboratory August i left the 

 fruit within two days and emerged as adults August 12. Other larvae 

 were found feeding on the spores in the field September 6 and October 

 I, so that there are probably several generations a year. The insects 

 are not present in the hypertrophied fruits during the winter, so it 

 seems probable that they hibernate as pupae on the ground. 



The swellings due to this rust were found quite often at the bases 

 of the thorns as well as on the fruit, and every one examined contained 

 larvae. They were never found within the fruit or thorn itself, but 

 always in the fungus. They were found on Crataegus neofluzialis, 

 C. punctata, C. macracantha, C. pruinosa and C. tomentosa. The 

 red cedar Juniperus virginiana is the alternate host of the rust and 

 Crataegus trees near a red cedar are more liable to be infected than 

 those farther from it. — Walter H. Wellhouse, Dept. of Entomology, 

 Cornell University, Ithaca, New York. 



■ <•> ■ 



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, 

 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 

 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 Experiment Stations, Washington. Also Review of Applied En- 

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

 mology, see Review of Applied Entomology, Series B. 



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 — Annals 

 and Magazine of Natural History, London. 15 — Insecutor Insci- 



