333 



AN TCERYA IN FLORIDA. 



Passed Assistant Paymaster H. R. Smith, U. S. N., now stationed at 

 Key West, Fla., sent to this Department on the 24th of March a bark- 

 louse infesting the Rose. April 12th he sent further specimens, includ- 

 ing a complete plant and all stages of the insect, except the male. We 

 have recognized in this insect what seems t:o be a new species of the 

 genus Icerya, but which resembles more closely Icerya sacchari — the 

 sugar-cane pest of Mauritius — than 1. purchasi, the citrus pest of Cali- 

 fornia. The young lice are indistinguishable from I. purchasi, but the 

 adult females lack the fluted ovisac and the glassy filaments. They 

 are covered with white meal-like wax, and when this is removed they 

 show the contrasting colors of black and red. The black is upon the 

 dorsum of the thorax, and the red is upon the entire ventral surface 

 and the dorsum of the abdomen. The youDger stages are entirely red. 

 The antennae, in the different stages are almost indistinguishable from 

 those of 1. purchasi; the mentum and rostrum are present, and the 

 genito-anal ring lacks bristles. The second stage of the larva pos- 

 sesses not only the six long anal bristles, but has a row of very long 

 bristles on the lateral border of the abdomen. While it is somewhat 

 unsafe to generically refer a Monophlcebid without the male, we hope 

 soon to get this, and will then endeavor to fully characterize and illus- 

 trate the species in a near number of Insect Life. Meanwhile, we 

 would propose for it the MS. name Icerya rosce. 



ENTOMOLOGICAL SOCIETY OF .WASHINGTON. 



March 6, 1890. — Mr. Schwarz exhibited and remarked upon the following species of 

 Coleoptera, which are new to the fauna of North America : Lathridius (Coninomus) 

 nodifer Westwood ; Actinopteryx fucicola Allibert, Arrliipis lanieri Gue'rin, and Pro- 

 batius umbratilis Duval. He also showed specimens of Temnochila hubbardi Le'veille', 

 and Teretriosoma hornii Lewis, recently described in European journals, from the 

 semi-tropical region of Florida. Ho finally drew attention to Dr. Horn's recent re- 

 vision of the North American species of Ochthebius, and spoke of the geographical dis- 

 tribution of these aquatic beetles. 



Mr. Marlatt presented a note on a dipterous larva infesting the seeds of Xanthium. 

 He had found these larvae at Manhattan, Ivans., and, during the past winter, in the 

 District. Drawings were exhibited illustrating the larva and the nature of its work. 



He also presented a short note on the food-habits of Psiloptera drummondi. 



These notes were discussed by Messrs. Schwarz, Townsend, and Howard. 



Mr. Townsend read a paper entitled "Notes on Acridiidse in Michigan," which re- 

 lated more particularly to dates of appearance and habits. 



C. L. Marlatt, 

 Recording Secretary. 



