1899] ENTOMOLOGICAL NEWS. 103 



Why did no larva pupate? The environment was not abnormal, 

 unless, perhaps, the food supply was scanty. Pei'haps the reason 

 lies in the condiiions of tlie " borning: " These slow growing, long- 

 lived, non-pupating wrigglers issued from eggs which were laid by 

 a virgin female. The female issued from its pupal case and almost 

 immediately laid eggs. There was no other mosquito in the jar. 

 and there was certainly no mating. Perhaps parthenogenesis is not 

 unknown among mosquitoes. I do know that it is knowu. But if 

 all the parthenogenetically produced larvae fare out their lives as 

 these I have watched did, parthenogenesis among mosquitoes is in- 

 fanticide. 



The Odoxa-TA of thk '" Biologia Cextrali- Americana." - Hav- 

 ing i^ecently been asked by Mr. F. D. Godman, of London, to under- 

 take the preparation of the part of this work relating to theOdonata. 

 and having accepted this ofter, £ desire to make this partas complete 

 as possible. As the "Biologia"' aims to embrace all Mexican and 

 (.'entral American species, whether included in the joiut collections 

 of Mr. Godman and the late Mr. Silvin or not, 1 shall be greativ 

 indebted to any persons who will loan me Odonata (" di-agonflies," 

 "darning-needles") from those countries for examination, the re- 

 sults of such study to be included in this work. In this connection 

 I will identify unnamed material for a very moderate return in 

 duplicates. As some recent collectors have distributed specimens 

 from that I'egion quite widely, I suggest that any one willing to 

 aid me should write to me before sending the iiisect- and let me 

 know the sources of their material, as, some time, labor and expense 

 may thereby be saved-— Philip P. Calvert, Academy of Natural 

 Sciences. 19th and Race Streets; Philadelphia. Pa. 



" Go to the ant, thou sluggard I " commanded the Proverb. 



Accordingly the Sluggard went to the Ant. 



*' Go to the devil ! " exclaimed the Ant. 



"Talk about red tape!" sighed tlie Sluggard —Detroit Journal. 



