144 THE NAUTILUS. 



depended upon with certainty. " A few drops of a 5 per cent, solu- 

 tion of cocain were mixed with the water in which the Aplysias 

 were. After a time they expanded fully. They were then left in 

 the solution (twelve hours or more) till no contraction took place 

 when removed and put into weak alcohol. If contraction took place, 

 they would be put back into the cocain solution when they again 

 expanded. This was repeated till no contraction took place, when 

 they could, after a time, be put into stronger alcohol." -Natural 

 Srience, March, 1896. 



NEW PUBLICATIONS RECEIVED. 



A LIST OF THE SPECIES OF AMPHIDROMUS ALBERS, WITH CRIT- 

 ICAL NOTES AND DESCRIPTIONS OF SOME HITHERTO UNDESCRIBEU 

 SPECIES AND VARIETIES. By Hugh Fulton (Ann. Mag. Nat. Hist., 

 January, 1896). The species of this difficult genus of Bulimi are 

 arranged according to their affinities in groups; the synonymy is 

 thoroughly overhauled, and several new forms are described. Mr. 

 Fulton has done good service in reducing to varietal rank a large 

 number of nominal species, which have caused collectors endless 

 pains and confusion ; his treatment of the perversus group being espe- 

 cially commendable. Three excellent lithographic plates illustrate 

 new or previously unfigured species and varieties. 



RECOLTE DBS MOLLUSQUES ; CONSEILS AUX VOYAGEURS, par A. 

 Bavay. Instructions for collecting mollusks, land, fresh-water and 

 marine, with quite full information on where to find them. 



CATALOGUE OF THE SPECIES OF CORBICULID.T; IN THE COLLEC- 

 TION OF TEMPLE PRIME NOW FORMING PART OF THE COLLECTION 

 OF THE MUSEUM OF COMPARATIVE ZOOLOGY AT CAMBRIDGE, MASS. 

 By Temple Prime, 1895. The species are arranged geographic- 

 ally and under each species are arranged by letters, the synonymy 

 and the various localities represented. Of the genus Corbiculu there 

 are 58 species ; Batistx 8 ; Velorila 3 ; Ci/rcim 42 recent, and 23 

 fossil; Rjrficerium 23 recent and 2 fossil; Limos'uni 10; PlsliliiimSl 

 recent and 2 fossil. 



BULLETIN OF THE CHICAGO ACADEMY OF SCIENCES, Vol. II, No. 

 11, 1895. Preliminary Outline of a New Classification of the 

 Family Muricidn-, by F. ('. Baker. 



