144 THE NAUTILUS. 



probably were obliged to be, to escape being washed out by the 

 winter floods. Perhaps the juvenile specimens were sunk so as 

 to be practically invisible. Where the canal passed through 

 hard clay, the Gonidea live in holes something like Petricola 

 ploladi/ormis Lam. " I wonder how they made the holes?" The 

 canal is not for boats, but carries water for power. At most 

 places it is a trough blasted through rock, and here the Gonidea 

 are very abundant in the running water ; but it also lives in the 

 still water of the lake. E. G. VANATTA. 



A REPAIRED SHELL. While digging Zirfaa gabbi Tryon, at 

 Anaheim Bay, Cal. recently I took one about 2-J inches long 

 that had repaired a very bad break in its shell. One valve was 

 whole but the other had been broken from end to end, the break 

 being nearly straight and not far from the umbones and a piece 

 of the shell as large as a 25-cent piece was entirely gone from 

 the lower end of the valve. At the line of the break the pieces 

 of shell had separated \ inch and were fastened together by 

 new shell nearly to the original outline. The new shell was 

 somewhat translucent and lacked the characteristic sculpturing 

 of the shell. In the same bank of red clay I get Pholas pacifica 

 Stearns, Platyodon cancellatus Conrad, and Schizothcerus nuttallii 

 Conrad. E. P. Chace. 



On the occasion of the dedication of the Mellon Institute of 

 Industrial Research of the University of Pittsburg, February 

 26th, the honorary degree of Doctor of Science was conferred 

 upon Mr. George Hubbard Clapp, president of the board of 

 trustees of the University. 



Dr. Paul Bartsch has been made Curator of Marine Inverte- 

 brates of the National Museum. As conchologists we hope that 

 his new responsibilities will not diminish his activities along 

 molluscan lines. 



PUBLICATIONS EECEIVED 



ILLUSTRATIONS OF A THOUSAND SHELLS, part 2, By Y. HIRASE, 

 Kyoto, Japan, Jan. 1915. The second part of this unique work, 

 is fully as interesting as the first. It contains 105 excellent 

 figures making the total for the two parts 200. The author 

 shows indomitable zeal in promoting the study of Japanese 

 mollusks. He deserves all the encouragement possible, and we 

 wish him success. C. W. J. 



