250 PROCEEDINGS OF THE CALIFORNIA 



ville, Indiana, on the 24th of June last, aged 65 years ; his death 

 ■was from paralysis, occasioned by wounds received during the late 

 civil war, at the commencement of which he was associated with 

 David Dale Owen, Prof. E. T. Cox and Leo Lesquereux, in a geo- 

 logical survey of the State of Kentucky. 



Dr. Blake mentioned the appearance of a blight on the fruit in 

 the Sacramento valley this season, apparently a species of Oidium, 

 particularly upon the peaches, a specimen of which he exhibited. 



A specimen of a rare mineral from Nevada, where it is found, 

 and which is called Anatase, was exhibited by Dr. Blake, who 

 stated that it was a form of titanic acid in crystal, but of no com- 

 mercial value. 



Regular Meeting, August 19th, 1872. 

 President in the Chair. 



Twenty members present. 



James Freeborn was elected a resident member. 



Donations to the Museum : Fossil bones from the John Day 

 mining region, Oregon, presented by C. D. Voy. 



Mr. Andrews exhibited the " gall " made by a species of insect, 

 the larva of which causes the same to move about, and hence are 

 popularly known as " flea-seeds." 



Mr. Stearns read the following : 



Notes on Purpura canaliculata, of Duelos. 



BY ROBERT E. C. STEARNS. 



This fine species ranges from XJualashka, soutli to ^Monterey, California — 

 most of the specimens heretofore distributed being from the intermediate point 

 of Vancouver Island. Specimens from the last named place, large numbers of 

 which I have examined, are less variable in size and form than those from far- 

 ther north, and are generally a more delicate shell. One marked peculiarity of 

 the Vancouver specimens is the wide groove or sulcation following the suture, 

 which appears to be constant, as I have found it in all the specimens from this 

 locality ; it is inconstant in the more northern and southern specimens. The 

 Vancouver shells average l}^ inches in length, and the costte are very promi- 

 nent. The specimens from Uualashka are the largest I have seen, the average 



