232 ENTOMOLOGICAL NEWS [May, '13 



On the Humming of Chironomidae (Dipt.). 



Mr. E. E. Green, of Peradeniya, Ceylon, in the Entomologists' 

 Monthly Magazine for February, 1913, gives an account of his experi- 

 ence with Chironomus ceylanicus Kieffer, of which the following is an 

 abstract : 



"Colombo, Ceylon, is plagued at certain seasons by dense swarms of 

 so-called 'lake-flies,' which issue at night- fall from the margins of the 

 shallow lake that spreads its many arms through the residential quar- 

 ters of the town. . . . Bungalows situated on the leeward side of the 

 water are rendered almost uninhabitable during the fly season, when 

 the insects swarm into the lighted rooms, blackening the walls . . . 

 and making themselves generally objectionable. In the morning they 

 may be swept up literally by the bushel. 



I happened to be bicycling one evening along a road that impinged — 

 at one point — upon an arm of the lake. On approaching this spot I 

 became aware of a gradually increasing and insistent noise . . . when 

 I suddenly was involved in a dense fog of flying insects. I was in- 

 stantly smothered in the flies which filled my eyes, ears and nose, 

 almost blinding and suffocating me. . . . The noise which, at the time, 

 I supposed to be produced by the vibration of the myriad wings, was 

 most extraordinary. I now understand that it is more probably attrib- 

 utable to actual stridulation." 



Entomological Iviteratu.re. 



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 entomologv^ will not be noted; 

 but contributions to anatomy, physiologj- and embryologj' 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 Hst, in which the papers are published, and are all 

 dated the current year unless otherwise noted, always excepting those 

 appearing in the January and February issues, which are generally dated 

 the year previous. 



The records of systematic papers are all grouped at the end of each 

 Order of which they treat, and are separated from the rest by a dash. 



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

 Office of Experiment Stations, Washington. 



iJ — Transactions, American Entomological Society, Philadelphia. 

 4 — The Canadian Entomologist. 5 — Psyche. 7 — U. S. Department 

 of Agriculture, Bureau of Entomology. 8 — The Entomologist's 

 Monthly Magazine, London. 9 — The Entomologist, London. 11 — 

 Annals and Magazine of Natural History, London. 21 — The Ento- 

 mologist's Record, London. 22 — Zoologischer Anzeiger. Leipzig. 

 38 — Wiener Entomologische Zeitung. 49 — Annales historico-natu- 

 rales Musei Nationalis Hungarici, Budapest. 50 — Proceedings of 



