1 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



tegula to tegiila ; niesopra^scntnin 

 well defined ; front wings with tlie 

 niedio-cubital cross-vein never less 

 than three and sometimes four or 

 five times the length of the trans- 

 verse part of media. CEPIIID.E 



EE. Anterior tibiff each with two apical spurs; 

 propodeum not divided longitudinally but 

 • broadly emarginate behind. 



31EGAL0D0NTID.E (European) 



DD. Front wings with the transverse part of ]\L 

 absent; oviiiositor retractile, thread-like, without 

 prominent sheaths ; antennte inserted low on the 

 front beneath a prominent ridge which has the 

 appearance of being the elypeus; vertex with a 

 crown of tubercles; propodeum not divided 

 longitudinally. ORYSSID.E 



CC. The radial cross-vein in the front wings with its caudal 

 end distinctly apiead of R-, or wanting; the anterior 

 tibite with two apical spurs. 



D. Antennsp four-segmented, the third segment about 

 twice as long as the first two united, and about 

 nine times as long as the fourth. 



BLASTICOTOMID.E 



DD. Antennae variously formed, but not as above. 



TENTHREDINID.E 



THE FAMILY SIRICID^ 

 History of the Nomenclature of the Genera 



There have long been recognized five groups, corresponding 

 to what we now call genera, although not all of them, until 

 within the past fifteen years, have been recognized as genera. 



LinnEpns in the tentli edition of the Systema naturjie grouped 

 together under the comjirehensive genus Ichneumon the species 

 for which he subsequently erected the genus Sirex (1761). 

 These were five in number, and include the types of three of the 

 genera today recognized, as well as one belonging to another 

 family. These originally included species of Sirex were: 

 gigas, spectrum, juvencus, camelus, and marisca. 



The following year Geoffroy i)roposed the name Urocerus, 

 figuring and indicating by a direct bibliographical reference 



