MADEIRAN GROUP. 



G5 



Pto.Stn Mad. S. Des. 



Helix polymorphs, Lowe 



/3. salebrosa, Lowe 

 y. poromphala, Lowe 

 6. pulviuata, Lowe 

 i. papilio, Lowe 

 k. discina, Lowe . 

 fi. attrita, Lowe 

 „ testudinalis, Lowe 

 „ Bulwerii, Wood 

 „ tectiformis, Sow. 

 a. [nornialis] 

 £. * Ludovici, Alb. 

 „ * delphinula, Lowe 

 a. \_normalis] 

 /3. planispira, Paiva 

 „ coronata, Desh. 

 „ * coromda, Lowe 

 „ tiarella, W. et B. 

 „ calva, Lowe 

 Pupa * linearis, Lowe 

 „ cassida, Lowe 

 ,. laurinea, Lowe . 

 „ * Wollastoni, Paiva 

 „ millegrana, Lowe 

 „ coi - neocostata, Woll. . 

 „ calathiscus, Lowe 

 „ abbreviata, Lowe 

 „ gibba, Lowe 

 „ lamellosa, Lowe 

 „ saxicola, Lowe . 

 Clausilia crispa, Lowe 



/3. decolorata, Woll. 

 „ deltostoma, Lowe 

 a. raricosta, Lowe 

 /3. [norrnalis] 

 Achatina eulima, Lowe 

 Lovea terebella, Lowe 



a. subula, Lowe 

 „ oryza, Lowe 

 „ triticea, Lowe . 

 „ melampoides, Lowe 

 „ tornatellina, Lowe 

 „ mitriformis, Lowe 

 „ ovuliformis, Lowe 

 „ * c //lie Jin a, Lowe 

 Craspedopoma lucidum, Lowe 



„ trochoideum, Lowe 



* 

 * 

 * 



From which we gather that, out of the 176 members of the 

 Pulmonata which have been recorded up to the present time in 

 the Madeiran Group, no less than 82 are met with in a sub- 

 fossilized state. And inasmuch as these 82 are made up almost 

 exclusively of the species which are manifestly indigenous — 

 (those which there is every reason to suspect have been esta- 

 blished accidentally within a comparatively recent period being 



