UURYTOMID.E. 5 



cornuta, brevis, minor, pusilla, teuuicornis, breviventris, fulvicollis, 

 flavicollis. 



Roughness. — I. verticillata, petiolata, hyalipennis, crassicornis, 

 Nepe, brevicornis, Laothoe, depressa, longicornis, vacillans, dissimilis, 

 attenuata, brevipennis, linearis, angustata, angustipennis, cornuta, 

 brevis, minor, pusilla, teuuicoruis, breviventris, fulvicollis, flavicollis. 



Obtuseness of tbe tip of tbe scutellum. — I. verticillata, petiolata, 

 hyalipennis, longicornis, vacillans, dissimilis, attenuata, brevipennis, 

 angustata, angustipennis, cornuta, brevis, minor, pusilla, teuuicornis, 

 breviventris, fulvicollis, flavicollis, crassicornis, Nepe, brevicornis, 

 Laothoe, depressa, linearis. 



The metathorax is successively less dull and decumbent and 

 punctured in the following series ; — 



Dull and decumbent. — I. verticillata, crassicornis, vacillans, brevi- 

 cornis, Nepe, petiolata, cornuta, angustata, depressa, brevipennis, 

 attenuata, linearis, Laothoe, hyalipennis, brevis, minor, pusilla, tenui- 

 cornis, breviventris, fulvicollis, flavicollis, angustipennis, longicornis, 

 dissimilis. 



The preceding series will express the successive diminution of 

 punctures, except that I. fulvicollis and flavicollis should precede 

 I. brevis. 



In the following species the metathorax is furrowed ; — I. verticillata, 

 crassicornis, vacillans, brevicornis, depressa, brevipennis, attenuata, 

 linearis, Lathoe, hyalipennis, brevis, minor, pusilla, teuuicornis, 

 breviventris, fulvicollis, flavicollis. 



In the following species it is not furrowed : — I. Nepe, petiolata, 

 cornuta, angustata, angustipennis, longicornis, dissimilis. 



In the following species it is excavated : — I. verticillata, crassi- 

 cornis, vacillans, brevicornis, Nepe, petiolata, cornuta, angustata, 

 brevis, minor, pusilla, teuuicornis, breviventris, angustipennis, longi- 

 cornis, dissimilis. 



In the following species it is not excavated : — I. depressa, brevi- 

 pennis, attenuata, linearis, Laothoe, hyalipennis. 



The following series shows the successive diminution of length of 

 the petiole : — I. petiolata, cornuta, verticillata, brevis, vacillans, Nepe, 

 dissimilis, longicornis, angustipennis, crassicornis, minor, teuuicornis, 

 pusilla, breviventris, angustata, fulvicollis, flavicollis, depressa, linearis, 

 Laothoe, hyalipennis, attenuata, breviventris, brevicornis. 



The abdomen successively diminishes in length and convexity as 

 follows : — 



Male. Length. — I. verticillata, longicornis, angustipennis, vacillans, 

 brevis, cornuta, minor, pusilla, tenuicornis, brevicornis, Nepe, petiolata, 



