JMIYI.I.orilACiA — TKNTHRKDINIDiE. lo 



PHYLLOPH AGA. 



Tliis exten.-ive series is c()ni])()se(l of a siimlc family, coin prising 

 those insects popularly known as Saw-Hies, which have the abdomen 

 attached l)v its entire width to the extended portion of the meta- 

 thorax, which resembles a segment and has often been described as 

 the first. The anterior tibite have two aj)ical spurs, and the oviposi- 

 tor consists of two compressed saw-like plates api)lied against each 

 other, and enclosed in a pair of outer sheaths. In the larva state 

 these insects are the most injurious of all hymenoptera, feeding upon 

 the leaves of trees and various plants, and often coni})letely destroy- 

 ing the foliage. The characteristics of the series are given at length 

 by Mr. Norton in his admirable work mentioned below, and which 

 is easily obtainable by all who may wish to make a study of these 

 insects. 



Family TENTHREDINID^. 



The synopsis given below of this and the following family, is taken 

 in great part from Mr. Norton's exhaustive monograph entitled, 

 " Cataloo-ue of the described TenthredinidjB and Urocerida? of North 

 America." (Trans. Am. Ent. Soc. vol. i, June, 1867.) In that valu- 

 able paper all the genera and species known at that time to occur in 

 our fauna, as well as the family characters, etc., are described at 

 length. Later, in LS80, the writer published, also in these Transac- 

 tions, descriptions of many species then considered to he new, adding 

 also a copv of the original descriptions (scattered through various 

 publications), of the species described in the interim ; this was fol- 

 lowed bv a list of the genera and s])eci('s with references and habitat.* 



Table of Subfamilies. 



Antcimit .") s jointed, sliort, chiviite (except iu AcorilnJecera) Cimbicinee. 



Antonna? :i-j()inti'(l, third Joint loiiu and often fnvcatc in % Hylotominse. 



Antennte ij-joiutcd, very i-arely 8-jointed las in Lahtdia): anterior winys with 



one or two luarpnal cells Tenthredinines. 



Antfiinse 9-13-jointed, irregidar, third joint very Umj^ : anterior wings witli tiiree 



marKiiiiil and four suhmarginal eolls; ovipositor loiiu Xyeliinee. 



Antenn;e mnltiarticuhite, witli more tlian lU joints Lydiinee. 



"■■• Separata of these pnhlieations, under one eover, can be olitained from the 

 American Entoniolojiical Society, as well as many of the pajiers referred to in the 

 following pages. 



