68 



common in the ponds to the north of St. Louis Dam, near the Experi- 

 mental Farm. 



Mr. Harrington has collected in moss a great number of our smaller 

 shells. One new to our list is Vertigo ventricosa, Morse. I thought I 

 had the shell some years ago, but my specimens were merely V. ovata, 

 with only one of the labial teeth developed. Since finding the species 

 among Mr. Harrington's shells, I have observed it among my own, mixed 

 with F. gouldii. The difference is not easily perceptible under a hand 

 lens, but with the microscope it is quite apparent. V. ventricosa has 

 nearly a whorl less, and is considerably less slender. I think it is more 

 common on the Hull side of the Ottawa, as it is there I collected most 

 of the shells among which I have noticed V. venti-icosa. 



In conclusion I have to express my regret that with the present 

 report must close my active connection with this interesting study. 

 Happily the club now includes among its members not a few gentlemen 

 who have all the qualifications necessary to carry on properly the work 

 of the Concholgical Branch. 



F. R. Latchford, 



Leader. 



SPRING REPORT OF THE ORNITHOLOGICAL BRANCH. 



To the President and Council of the Ottawa Field-Naturalists Club : 



Gentlemen, — In presenting their Spring report, the leaders of the 

 Ornithological Branch must congratulate you on the increased interest 

 shewn by the members of the Club in the work of this branch during 

 the present season. Including the leaders, there have been seven 

 observers in the field who sent in lists of their observations. The results 

 of their work are embodied in the subjoined list of Spring arrivals. 

 Notwithstanding these facts, however, only one addition has been made 

 to the list, which seems to indicate that the field in this direction has 

 been pretty thoroughly gone over, though much still remains to be 

 done in working out the life histories of the birds of this district. 



The addition to the list is : — Falco j)eregrinus anatum (Bonap.), 

 Duck Hawk. A specimen of this bird was observed by Mr. G. R. 



