426 TEST ACE A AT LAN TIC A. 



magis apertam (sc. fere umbilicum) non tegente. Long, 

 lin. 6J ; diam. maj. 2. 



Bulimus Moquinianus, W. et 5., Ann. Sc. Nat. 27. syn. 319 



(1833) 

 dOrb., in W. et B. Hist. 70. t. 2. 



f. 24(1839) 



Pfeiff., Mon. Eel. ii. 1 65 (1848) 



Buliminus Moquinianus, Mouss., Faun. Mai. des Can. 103 



(1872) 

 Bulimus Moquinianus, Pfeiff., Mon. Hel. viii. 90 (1876) 



Habitat Canariam Grandem ; in intermediis, prsecipue cal- 

 careis, rarior. 



The B. Moquinianus is peculiar to Grand Canary, where it 

 would appear to be scarce. It was, however, taken by Mr. 

 Lowe and myself, on the 20th of April 1858, in the somewhat 

 calcareous district between Lagaete and Gaidar, on the western 

 side of that island ; and it is recorded by Mousson to have been 

 met with by Fritsch near Las Palmas. It may be distinguished 

 by its pale yellowish-brown, olivaceous surface, which is a little 

 shining, rather coarsely (though unevenly) striated, and obscurely 

 marbled with faintly lighter but very irregular subconfluent 

 oblique spaces or stripes, and by its somewhat more fusiform (or 

 medially-thickened) contour, the intermediate whorls (although 

 not convex) being rather more enlarged than in the allied forms, 

 and the basal one (which is most obsoletely subangulated across its 

 dorsal region), consequently, hardly broader than the one which 

 precedes it. Its aperture is relatively small, with the peristome, 

 although thickened, but very little expanded ; and its chink- 

 like perforation is wider, or more open, than in the allied species, 

 as well as less covered over (indeed scarcely so at all) by the 

 columellary margin. 



Bulimus helvolus. 



T. angulatim rimata, elongate fusiformi-ovata, tenuis, pellu- 

 cida, nitida, leviter irregulariter striatula, pallide et dare 

 ochraceo-cornea, concolor ; spira cylindrico-conica ; anfracti- 

 bus 7, convexiusculis, ultimo elongato, intermediis, inflatiusculis, 

 subauctis ; apertura subrotundata, peristomate albo et anguste 

 expanso,marginibus subapproximatis et callo lineari albo (ad inser- 

 tionem dextram in nodulum, ab angulo incise disjunctum, aucto) 

 junctis, columellari vix reflexo. Long. lin. vix 7 ; diam. maj. 3. 



Bulimus helvolus, W. et B., Ann. des Sc. Nat. 27. app. 326 



(1833) 



d'Orb., in W. et B. Hist. 71. t. 2. f. 21 



(1839) 



