404 TEST ACE A ATLANTIC A. 



part) ; its spire, although obtuse, is more conical, or much less 

 depressed ; and its umbilicus is not quite so open. Its ultimate 

 whorl, too, is not quite so acute or so broadly edged with a com- 

 pressed keel, though the latter is perhaps more distinctly trace- 

 able (immediately above the sutm-e) up the spire ; its coloiu* 

 (above) is of a paler yellowish-horn, or buff, the volutions being 

 more or less variegated by a narrow, tessellated fascia above the 

 sutiu'e, on the actual keel, and sometimes by a second, and more 

 indistinct, medial one ; its aperture is a good deal thickened, or 

 labiate, internally ; and (which is the salient feature) its trans- 

 verse ridges of growth are uniformly broken-up by (nevertheless 

 somewhat obscm'e) spiral lines into granuliform, or tuberculi- 

 form, fragments, — giving the entire surface a very beautifully 

 sculptured appearance. 



The H. granostriata (which was not obtained by either Mr. 

 Lowe or myself) was found both by Hartung and Fritsch, and 

 by both of them in Lanzarote as well as in Fuerteventura. In 

 the latter island it seems to have been met with subfossilized 

 likewise. ' Elle se trouve,' says Mousson, ' a Fuerteventm"a 

 egalement a I'etat subfossile en dimensions plus faibles, a test 

 plus solide et a surface depourvue des details de la sculpture, 

 qui la ou Ton en decouvre les traces, sont bien les memes.' 



Helix morata. 



Helix morata, Mouss., Faun. Mai. des Can. 54 (1872) 

 „ „ Pfeiff., Mon. Hel. vii. 246 (1876) 



^a6ifaiFuerteventm'am, semifossilis ; a cl. Fritsch detecta. 



This Helix (which is unknown to me except through the 

 published diagnosis) appears to be closely allied to the grano- 

 striata, but smaller. It was found by Fritsch, in a subfossil 

 state, in Fuerteventura, and was described by Mousson from 

 a single example. ' Cette espece,' says Mousson, ' provient de la 

 meme ile que la granostriata, mais parait en dififerer. La 

 morata. est plus petite, moins anguleuse, plus etroitement om- 

 biliquee ; la peristome n'est pas evase, quoique fortement labie, 

 les bords sont bien separes a leur insertion ; enfin, au lieu de 

 granules allongees, il y a un tapis da granules plus fines 

 serrees et rondes, qui determine un double systeme de sillons 

 transversaux et spiraux. Cette jolie espece dont je n'ai vu 

 qu'un seul echantillou, denue de cuticule, appartient peut- 

 etre egalement a une faune diluvienne eteinte.' 



Helix multipunctata. 

 Helix multipunctata, Mouss., Faun. Mai. des Can. 54. pi. 3. 

 f. 16-18 (1872) 

 „ „ Pfeiff., Mon. Hel. vii. 246 (1876) 



