THE NAUTILUS. 107 



of a specialist on the Gerionida who might later have occasion to 

 criticise this work. C. W. J. 



A PRELIMINARY LIST OF THE MOLLUSCA OF MISSOURI (exclu- 

 sive of the Unionidce), by F. A. Sampson (Trans. Acad. Science, 

 St. Louis, Vol. xxii, pp. 67-108, 1913). A valuable and interesting 

 list of 132 species, giving their distribution throughout the State. 



OBSERVATIONS ON LIVING SOLENOMYA (velum and borealis), by 

 Edward S. Morse (Biol. Bull., Vol. xxv, pp. 261-281, 1913). An 

 exceedingly interesting article, in which the animals are clearly 

 shown by some 22 figures, and their habits and structure fully de- 

 scribed. Their movements consist of a series of vigorous darts, 

 which send them rapidly through the water. They seem to have 

 the peculiar habit of burrowing in the mud posterior end down- 

 ward, this attitude being contrary to the behavior of all other bur- 

 rowing lamellibranchs. C. W. J. 



NOTES. 



HELIX HORTENSIS ON WHITE BULL ISLAND, ME I have read 

 with much interest your paper in October NAUTILUS on Helix 

 hortensis in New England, and note on page 63, you mention that 

 the species has not before been recorded from White Bull Island, 

 Maine. With this I am sending you a partial catalogue of the land 

 shells in my collection, which I printed in 188!>. (Circumstances 

 prevented its completion). On page 32, No. 2066, you will find the 

 species listed from that locality, received from Rev. E. C. Bolles (of 

 Portland, Maine) who sent them to me October 30, 186'!. This 

 may not constitute a "record," though copies of the catalogue have 

 been somewhat extensively circulated among my friends and corre- 

 spondents in this country and abroad, but possibly you may be 

 interested to know that its existence on White Bull Island was 

 known 46 years ago. WM. G. MAZYCK. 



MARTYN'S UNIVERSAL CONCHOLOGIST Seeing Mr. Berry's 

 note in December NAUTILUS reminds me that I have had a copy of 

 the first two volumes of this rare work in my library since May 1908 

 and as it differs in some particulars from those already put on record 

 I give description below. 



