366 ENTU.MOLOC.K 'Al, NEWS [Oct., 'lO 



looked for them, and was a distinct encouragement to persevere in my 

 search. I went to Costa Rica having this suggestion of Mr. O. W. 

 Barrett's in mind, published in the \K\vs for \~ovember, IQOO, page 

 601 : ''I understand the early stages of Mecistogaster and Megaloprepus 

 are still unknown. . . Now, is it possible that the early stages are 

 passed in the large water-retaining leaf hases of Bromeliads?" I am 

 glad to acknowledge my indebtedness to Messrs. Barrett and Knah 

 in this search, and I hope to publish later descriptions and figures of 

 this and other larvae of Costa Rican Odonata. I am not forgetful of 

 the fact that the above-mentioned suggestion and discoveries of plant- 

 dwelling Odonate larvae are antedated by the finds of Mr. Perkins 

 in the Hawaiian Islands, first announced, I believe, by Dr. David 

 Sharp in Volume V of the Cambridge Natural History (1895), page 

 426, in these words: "Mr. R. C. L. Perkins has recently discovered 

 that the nymphs of some of these are capable of maintaining their 

 existence and completing their development in the small collections 

 of water that accumulate in the leaves of some lilies growing on dry 

 land." A figure of one of these Hawaiian larva is given on the same 

 page. In his own work on the Neuroptera (1899) in the "Fauna 

 Hawaiiensis," Mr. Perkins several times alludes to these larvae (of 

 several species of Agrion) inhabiting the plant Astelia veratroides, 

 but gives no figure of them. There is still much opportunity for 

 further research along this line, as the larvae of Megaloprepus, 

 Pseudostigm<a and of Mecistogaster other than M. inadcsfits have not 

 yet been found. PHILIP P. CALVERT. 



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 Kn- 

 tomology of the Americas (North and South), excluding Arachnida and 

 Myriapoda. Articles irrelevant to American entomology, unless treating 

 of new genera, 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, and are all dated the current year unless otherwise noted. 

 This () following a record, denotes that the paper in question contains 

 description of a new genus; while this (*), that of a new North American 

 form. 



For complete record of Economic Literature, see the Experiment Station 

 Record, Office of Experiment Stations, Washington. 



2 Transactions. American Entomological Society, Phila. 4 The 

 Canadian Entomologist. 5 Physche, Cambridge, Mass. 6 Jour- 

 nal, New York Entomological Society. 7 U. S. Department of 



