61 [August, 



When I wrote my description of Idolia Icsvigata I considered 

 Sister leevigatus, PaykulJ, a true Trihalus ; as, however, it is an Idolia, 

 I suggest the name of gihla for my species, PaykuH's name having the 

 priority of 75 years. 



The members of the genus Idolia are difficult to characterize, as 

 the general structure in all is very much the same, and the specific 

 differences are few, and such as require the microscope to reveal them. 

 The localities given by Marseul for Trihalus Icevigatus are United 

 States, New G-ranada, Yucatan, Venezuela, Cuba, and St. Domingo ; 

 but I think it probable that specimens of Idolia from these places on 

 close examination will prove, in some instances, to be specifically dis- 

 tinct. Crotch did not include Trihalus Icevigatus in his Catalogue of 

 the Coleoptera of the United States, and it is probable this locality 

 has been recorded in error, as Dr. Horn has stated in his Synopsis. 



A list of the names and synonyms of the four species may read 

 as under: — 



C^EOSTERNUS AMEEiCANUS, Leconte, 1852. 



Trihalus americanus, Leconte, 1845. 



Trihalus americanus, Marseul, 1855. 



Trihalus marginifer, Marseul, 1862. 

 Idolia l^vigata, PaykuU {Hister), 1811. 



? Ccsrosternus Icevissimus, Leconte, 1852 (undescribed). 

 Idolia gibba, Lewis, 1886. 



IcEvigata, Lewis, 1885. 

 Idolia punctistebnfm, Lewis, 1885. 



There are two species more to be added shortly from the Godman 

 collection. 



Wimbledon : June, 1886. 



DESCRIPTION OF A NEW GENUS AND SPECIES OP 

 HEMIPTERA-EETEROPTERA. 



BY JOHN SCOTT. 



On turning over the leaves of one of the back volumes of the 

 Entomologist's Monthly Magazine, in search of some information 

 which I wanted, I stumbled upon a note at page 71, vol. xiv, relating 

 to the exhibition of a certain Hemipterous insect at a meeting of the 

 Entomological Society. This note recalled to my mind that I had 

 specimens of this very insect standing in one of my boxes of unnamed 



