1988.] ENTOMOLOGICAL NEWS. 203 



May 14th a pair of Lcucarctia acrcza were captured in coitu on a plum 

 tree. They were put in a breeding-cage, and on the 15th and 16th the 

 female laid 72S eggs in three patches. One on the day of the 15th, one 

 that night, and one the following day. They were laid in almost a square. 

 The rows of eggs were closely placed beside each other, but scarcely 

 touching, while the eggs in each row were apparently joined. In size 

 about mm. and about globular shape; color lemon-yellow and darker 

 to a deep yellow; changed fast with age to a deep blue before hatching. 

 All hatched on the morning of May 30. 



May 28 a stem of dead plum was found containing 598 eggs, all in one 

 patch and in five rows lengthwise of the stem. Commenced hatching 

 May 30; thirty-three failed to hatch. In both cases the young larvae fed 

 on the empty egg-shells first, cleaning them off to the surface of the wood. 

 They were afterward fed on plum and a number were grown to maturity. 

 — E. G. Titus, Fort Collins, Colo. 



Entomological Literature. 



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

 Natural Sciences of Philadelphia pertaining to the Entomology of the Americas (North 

 and South). Articles irrelevant to American entomology will not be noted. Contribu- 

 tions to the 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 pub- 

 lished ; * denotes that the paper in question contains descriptions of new North American 

 forms. Titles of all articles in foreign languages are translated into English; usually- 

 such articles are written in the same language as the title of the journal containing them, 

 but when such articles are in other languages than English, French, German or Italian, 

 this fact is indicated in parenthesis. 



4. The Canadian Entomologist, London, Ont., '98. — 5. Psyche, Cam- 

 bridge, Mass., Sept., '98.-7. U. S. Department of Agriculture, Division 

 of Entomology, Washington; circulars, second series, '98. — 8. The En- 

 tomologist's Monthly Magazine, London, Sept., '98.— 11. The Annals 

 and Magazine of Natural History, London, Sept., '98.— 13. Comptes 

 Rendus. Societe de Biologie, Paris, July 30, '98. — 26. Appleton's Popular 

 Science Monthly, New York, Sept., '98. — 40. Societas Entomologica, 

 Zurich-Hottingen, '98. — 42. Journal of the Linnean Society, London, 

 —45. Deutsche Entomologische Zeitschrift, '98, I Lepidopt. Heft, 

 Berlin, etc., Aug. 10.— 46. Tijdschrift voor Entomologie, xli, 1. The 

 Hague, July 30, '98.— 81. Biologisches Centralblatt, Erlangen, '98. — 

 86a Annales, 86b Bulletin, Societe" Entomologique de France, '96. 

 Rec'd. Aug. '98.-87. Revue Scientifique, Paris, '98.-88. Acles, So- 

 ci^te" Linneenne, Bordeaux, Hi, '97.-89. Zoologische Jahrbiicher, xi, 5, 

 Jena, Aug. 15, '98.— 90. Gartenflora, Berlin, '98.— 91. II Naturalista 

 Siciliano (n. s.), ii, 5-8, Palermo, July 15, '98. 



The General Subject.— B e e c h e r , C. E. The origin and signifi- 

 cance of spines : a study in evolution (cont.), figs., American Journal of 

 Science, New Haven, Sept., '98.— Bignel 1, G. C. Photographic en- 



