THE CANADIAN ENTOMOLOGIST. 309 



SOME RECENT CONTRIBUTIONS TO HEMIPTEROLOGY. 



BY J. R. DE LA TORRE BUENO, WHITE PLAINS, N. Y. 



(Continued from page 296.) 

 Prof. Montandon again lays the students of American Heteroptera 

 under deep obligations by bringing down to December of last year the 

 important and exclusively American Naucorid genus, Ambrysus, disposing 

 it in an excellent synoptic table. The new species described are the 

 following : 



Ambrysus Horvathi, Mont. — Peru. 



A. Colombicus, Mont. —Colombia. 



A. nitidulus, Mont. — Mexico. 



A. ochraceus, Mont. — Bolivia. 



A. Peravianus, Mont. — Peru. 



Hambleton's review of Corizus is most useful, and clears up the 

 unfortunate chaos into which our American species had fallen. His table 

 for the separation of species, complemented by his description of each, 

 together with the excellent plates, showing several of the species and the 

 distinctive characters of all, will enable anyone to readily identify his 

 American material. The number of species is fixed at 12, of which those 

 that occur in the Middle and New England States are named below to- 

 gether with their synonyms : 



Corizus crassicomis, Linne. 



=punctiventris, Dallas. 



= novaeboracensis, Signoret. 

 C. lateralis, Say. 



= punctipennis, Dallas. 



This is our commonest eastern form, and, I suspect, furnishes the 

 majority of records of other species, especially of C. sidce, which does not 

 appear to have been recorded authentically from further north than Mary- 

 land. 



C. nigristernum, Signoret. 



■= Bohemanni, Signoret. 



In the descriptions I miss other measurements in addition to the 

 length and breadth, as well as the proportions of the antennal segments ; 

 and also there is more attention paid to colour than would appear to me 

 to be desirable in a genus so variable in this character. 



In the "Biological Notes," Kershaw and Kirkaldy give us brief life- 

 histories of the Indian Pyrrhocorid bug, Dindymus sanguineus, and the 



September, 1909 



