2i8 The Ottawa Naturalist. 



Family XV. — Oxybelidae. 



1. O X y b e I u s q u a d r i n o t a t u s, Say. Our common species from June 



to Sept.; 6 females and 7 males. 



2. Notoglossa emarginatus, Say. Four females; the male not 



yet captured. 



Family XVI. — Crabronidae. 

 Subfamily I. — AnacrabronincE. 



3. Anacrabro ocellatus, Pack. This interesting' form is sometimes 



very abundant on spiraea, and is seen chiefly in July, in which month 

 my 9 females and 12 males were taken. 



Subfamily \\\.—Crahronince. 



4. Solenius interruptus, Lepel. One of our commonest crabronids, 



occurring abundantly at the end of summer on goldenrods, etc.; 18 

 females, 12 males. 



5. Solenius producticollis. Pack. Occurring with former species 



but much less common. In appearance and markings it closely 

 resembles the former, but is less coarsely sculptured. Four females 

 and five males collected in July and August. 



6. Ectemnius montanus. Cress, Five females and three males. 



7. Ectemnius corrugatus, Pack. A slightly smaller species; 



I female, 3 males. 



8. Crabro maculatus, Fabr. This large and handsome insect is our 



only representative of the typical genus upon which the family is 

 based. As C. singular is, Sm., it will be familiar to our collectors. 

 It occurs not unfrequently upon goldenrod, the males being most 

 abundant, as I have 10 males and only 3 females. Fox in his mono- 

 graph of the Crabronids states that the scutelium of the male is never 

 marked with yellow, but in one of my specimens it bears two yellow 

 dots, as it also does in two of the females. 



9. Pseudocrabro chrysarginus, Lepel. Another fine large 



species which is quite common; represented by 4 females and 19 

 males. 



10. Xestocrabro sexmaculatus. Say. One of our commonest and 



largest species of the subfamily, occurring abundantly throughout the 

 summer ; 12 females, 18 males. 



11. Xestocrabro trifasciatus. Say. Very similar in appearance 



but hardly as large, and much less common ; 3 females, 5 males. 



12. Xestocrabro paucimaculatus, Say. One female, captured 



June 20th, 



