198 Note on certain Terrestrial Molluslcs. 



ting point to the outer laterals and marginals, appearing first 

 on the ninth tooth. 



In correspondence on the subject of this difference, Binney 

 remarked as follows : 



" I have reexamined the Unguals of the Gonave and Cuban 

 shells, with a view of verifying the existence of the side cut- 

 ting point. In the Cuban Arangiana (Notes, Proc. Acad. 

 N. S. Phila., pi. XXI, fig. 1) you will see in the 8th and 

 11th teeth, an approach to a side cutting point by the bulging 

 on the side of the main cutting point. This sometimes occurs 

 on the extreme marginals also, both of Arangiana and Sag- 

 emon (1. c. fig. 4), while in the Gonave species it is very 

 much more pronounced on the outer laterals. The difference 

 is quite worth noting ; whether it be specific may well be 

 doubted, especially as we have never examined many Unguals 

 of any one species to ascertain the limits of variation." 



The occurrence in Haiti of the Cuban Sagemon affords 

 additional evidence of the fauna! connection of the two 

 Islands. Identical species are, however, rare. The following 

 may be mentioned as the most important : Helicina rugosa, 

 Pfr., Succinea ochracina, Guild., Zonites Gundlachi, Pfr., 

 Helix Boothiana, Pfr., Montetaurina, Pfr., vortex, Pfr., 

 Oleacina oleacea, Fer., Strophia striatella, Fer., microstoma, 

 Pfr., Macroceramus Gundlachi, Pfr., Goecilianella Gund- 

 lachi, Pfr., Stenogyra hasta, Pfr. 



Helix cepa, Mull. (Cepolis). 



Prof. Linden found in the vicinity of Port au Prince, 

 living specimens of H. cepa, var. minor. The color is an 

 uniform, very dark (blackish) chestnut, — rather more rufous 

 at the apex ; the pale band scarcely perceptible. 1 had not 

 previously seen fresh specimens of this curious species. 



Liguus virgineus, L. 

 This species doubtless lives on Gonave Island. 



