72 THE NAUTILUS. 



Vitrea ... 1 



Euconulus . . 1 



Succinea . . 1 



Vallonia . . 1 1 



Pupilla ... 1 



Bifidaria . . 1 4 4 



Vertigo ... 2 2 2 



Gochlicopa . . 1 



15 21 29 



There are in addition numerous local races or subspecies of the 

 Helicida. All the larger snails of the Chiricahuas, 21 species with 

 14 subspecies, are wholly confined to that range. The small snails, 

 on the other hand, are widely distributed. 



It will be seen from the above that Messrs. Pilsbry and Ferriss 

 have not only made very important additions to the snail fauna of 

 the United States, but have contributed most valuable data toward 

 the elucidation of those problems of heredity and evolution which 

 are puzzling us all. May they have the time and strength for many 

 other such contributions. T. D. A. COCKERELL. 



NOTES. 



SHELLS OF MT. EQUINOX, VERMONT. The following species 

 were obtained by the writer on the eastern side of Mt. Equinox, 

 near Manchester, Vt., in June, 1910, on one of the collecting trips 

 of the Boston Society of Natural History, in company with Messrs. 

 G. M. Allen and J. A. Cushman: Polygyra albolabris Say, P. say- 

 ana Pils., P. tridentata Say, P. fraterna Say, Oircinaria concava 

 Say, Pyramidula alternata Say, P. cronkhitei anthonyi Pils., Ompha- 

 lina fuliginosa Griff., Zonitoides arborea Say and Succinea ovalis 

 Say. In a small lake at the foot of the mountain Lymncea 

 desidiosa Say, Planorbis bicarinatus Say and Physa heterostropha 

 Say were also obtained. C. W. JOHNSON. 



W. F. PETTERD. In Hobart, Tasmania, on April 15, 1910, 

 occurred the death of Mr. W. F. Petterd, a veteran conchologist. 

 He wrote considerable on the land shells of his native island. 

 Mineralogy was another study to which he had made valuable con- 

 tributions. He had traveled extensively in Australia and the Pacific 

 islands. C. HEDLET. 



