APPENDIX I. 



THE ABIDAS AND CHONDRINAS OF THE PYRENEES 

 AND THE IBERIAN PENINSULA. 



By F. Haas, Frankfurt a. M., Senckenberg Museum.* 



Residence as a collector for several years in the Pyrenees 

 has brought me to, or it may be assumed sufficiently near to, 

 the standpoint specified by Pilsbry (Manual, XXIV, p. 263; 

 XXV, p. 44) for a monographer of the Pyrenean Abidas and 

 Chondrinas. 



In the summer months of several successive years I sys- 

 tematically worked through the Catalonian valleys of the 

 Pyrenees from west to east; also the low country on the 

 southern flank as far as the Ebro, and on the Mediterranean 

 coast even to Valencia. By this investigation I was enabled 

 to make many biologic observations which perhaps disclose to 

 some extent the normal range of variation. On the other 

 hand, the active collecting alluded to supplied extensive 

 material for comparison, such as is essential for the critical 

 handling of variable groups. Together with A. Bofill of Bar- 

 celona, I have already reported on my collection in a series 

 of papers, and tried to bring together monographically our 

 knowledge up to this time of the molluscan fauna of the 

 Catalonian Pyrenees. Reference must be made to these 

 monographs for detailed locality records, or for exposition of 

 the variability of species in single valleys. In the present 

 essay, the distribution and variation can only be discussed in 

 broader limits. 



The collaboration with A. Bofill has further put me in a 

 position to compare cotypes or at least topotypes of many so- 

 called species which have been described by Fagot and other 



i Translated by H. A. P. 

 (267) 



