CHAPTEIl VII. 



1. TENTHREDO SEMIRUFUS. 

 Tenthredo seminifus, NORTON, Proc. Eut. Soc. Phila., iii, 12. 



1 9 specimen; Eastern Nevada; 187'2 ; Dr. H. (J. Yarrow. 



2. TENTHREDO VARIEGATUS. 

 Tenthredo varietjatus, NORTON, Proc. Eut. Soc. Phihi., iii, 12. 



1 <? specimen; Eastern Nevada ; 1872; Dr. H. C. Yarrow. 



3. UROCERUS AREOLATUS 

 Urocerus areolatiis, CRESS., Trans. Am. Eut. Soc., i, 375. 



1 9 specimen; Colorado; Dr. H. C. Yarrow. 



4. UROCERUS EDWARDSII. 

 Urocerus EAwardsii, BRULLE, Hyin., iv, <M5, pi. 45, f. 1. 



1 9 specimen; Arizona; Jas. M. Rutter. 



5. UROCERUS CYANEUS. 

 Sirex cyaneus, FAB., Eat. Syst., ii, 127. 



1 9 specimen; New Mexico; J. Alborn. 



6. UROGERUS ALBICORNIS. 

 Sirex albicornia. FAB., Ent. Syst., ii, 127. 



1 9 specimen, with bright orange-yellow wings; New Mexico; J. 



Alborn. 



7. UROCERUS FLAVICORNIS. 



Kirex flavicornis, FAB., Eut. Syst., ii, 126. 



Sirex bisonatm, STEPH., Kirby, Fn. Bor.-Am., iv, 250. 



3 9 specimens ; Eastern Colorado ; 1873 ; Dr. J. T. Rothrock ; New 

 Mexico; Dr. H. C. Yarrow. 



8. TREMEX COLUMBA. 

 Sirc.v colinnbii, LINN., Syst. Nat., ii, 92!). 



1 9 specimen, with abdomen pale yellow, with live narrow black 

 fascia; South Arizona; H. W. Henshaw ; 1874. 



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