HISPANIOLAN AND BAHAMAN ANNULARIIDAE 121 



broadly oval; peristome double, the outer flaringly broadly expanded 

 and adnate to the preceding turn at the parietal wall and marked by 

 concentric lines of growth; the inner is moderately exserted and slightly 

 reflected. Operculum? 



The specimen figured (U.S.N.M. No. 529445) is one of 2 obtained 

 from H. C. Fulton. It has 6 whorls and measures: Height, 18.8 mm.; 

 greater diameter, 13.4 mm.; lesser diameter, 8.7 mm. 



Maltzan states that Rolle collected this near Dondon in the northern 

 part of Haiti. 



The color form fusca was also obtained at the same place and appears 

 not to merit a varietal name. 



L,ICINA DUBIA (GmeUn) 



Plate 18, Figure 6 



1780. Turho lincina Born, Testacea Musei Vindobonensis, p. 355, pi. 13, figs. 5, 6. 



Not Linnaeus, 1758. 

 1792. Turho dubius Gmelin, Systema naturae, vol. 1, pt. 6, p. 3606. 

 1816. Cyclostoma laheo Lamarck, Encyclopedic methodique, vol. 2, Liste des 



objets (pi. 461, figs. 4a, 4b.) 

 1822. Cyclostoma labeo Lamarck, Histoire naturelle des animaux sans vertebres, 



vol. 6, pt. 2, p. 145. 

 1851. Cyclostoma borni (Licina?) Pfeiffer, Proc. Zool. Soc. London, 1851, p. 63. 



Shell huge, ovate, pale orange, with white peristome. Nuclear whorls 

 decollated in all our specimens. Postnuclear whorls inflated, strongly 

 rounded, and marked by rather distantly spaced, low axial riblets of 

 which 102 are present on the last turn. These ribs terminate in slight 

 tubercles at the narrowly shouldered summit. In addition to axial ribs, 

 the whorls are marked by spiral threads about as strong as the ribs, of 

 which 14 are present between the summit and the periphery. The junc- 

 tions of the axial ribs and spiral threads produce feeble nodules. Suture 

 strongly constricted. Periphery well rounded. Base short, well rounded, 

 broadly openly umbilicated, and marked by the continuation of the axial 

 ribs, which extend upon the umbilical wall, and by 15 spiral threads a 

 little stronger than those on the spire, while on the umbilical wall there 

 are 19 spiral threads, which are very strong at the outer edge of the 

 umbilicus but grow less so inwardly. The last whorl is not solute. Aper- 

 ture broadly oval; peristome double, the outer broadly flaringly ex- 

 panded, adnate to the preceding turn at the parietal wall, and marked 

 by concentric lines of growth; inner peristome reflected over and adnate 

 to the outer. Operculum? 



The specimen described and figured (U.S.N.M. No. 504068) is one 

 received from Cuming labeled "laheo," from which the broadly evenly 

 expanded flaring peristome will differentiate it. It has a little more than 

 4 whorls remaining and measures : Height, 35.9 mm. ; greater diameter, 

 26.5 mm. ; lesser diameter, 20.0 mm. 



There is no locality data with the specimens, but it undoubtedly is a 

 Haitian shell for it has all the earmarks of belonging to Licina. 



