CAN AM AN GROUP. 477 



Habitat Lanzarotam, et Teneriffam ; sub lapidibus in salinis 

 hinc inde degens. 



Several examples of a Truncatella which were taken by Mr. 

 Lowe and myself at the Salinas in the extreme north of Lanza- 

 rote (in company with the Auricula bicolor, Morelet) have 

 been identified by Mousson with Shuttleworth's T. Lowei ; and 

 the same species appears to have been met with also, by Blauner, 

 in Teneriffe. As already stated, however (vide p. 280), I feel far 

 from satisfied that the T. Lowei is more in reality than an almost 

 totally unsculptured phasis of the T. truncatula ; though as it 

 has been acknowledged as distinct both by Shuttleworth and 

 Mousson, I will not cite the two as conspecific. The T. Lowei 

 (judging from the examples before me) differs from even the 

 1 var. /3. laevigata ' of the T. truncatula in being still more com- 

 pletely unsculptured, — there being only the faintest traces of a 

 few obsolete pits and abbreviated hair-like lines towards the an- 

 terior edge of each volution ; and perhaps the volutions them- 

 selves are, if anything, a trifle less tumid. 



Fam. 10. ASSIMINEIDjE. 



Genus 23. ASSIMINEA, Leach. 



Assiminea littorina. 



Helix littorina, Belle Ghiaje, Mem. An. s. Vert. Nap. iii. 



215. t. 49. f. 36-38 

 Eissoa littorea, F. et H., Hist. Brit. Moll. iii. 132. pi. 81 



f. 6, 7 

 Assiminea littorina, Jeffr., Brit. Conch, v. 101 (1869) 



„ „ Watson, Journ. de Conch. 220 (1876) 



Habitat Teneriffam ; a D. McAndrew, sec. cl. Jeffreys, re- 

 perta. 



This minute European Assiminea, which occurs on the tide- 

 washed rocks in the Madeiras and Salvages, is stated by Jeffreys 

 (I.e. v. 102) to have been found by the late Mr. McAndrew at 

 Teneriffe ; but I have not, myself, inspected Canarian examples. 



Fam. 11. HELICINIDjE. 



Genus 24. HYDROCENA, Parr. 

 Hydrocsena gutta. 



Hydrocsena gutta, Shuttl., Bern. Mitth. 145 (1852) 



„ „ Pfeitf., Mon. Pneum. Suppl. i. 157 



(1852) 

 „ „ Morel., Hist. Nat, des Acor. 214 (I860) 



