HISPANIOLAN AND BAHAMAN ANNULARIIDAE 127 



I.ICINA EVOLUTA (Reeve) 



Plate 18, Figure 7 

 1786. ? Turbo Licina magna Martini-Chemnitz, Conchylien Cabinet, vol. 9, p. 56, 



pi. 123, figs. 1061, 1062. 

 1842. Cyclostoma evoliitum Reeve, Conchologia systematica, vol. 2, p. 99, pi. 85, 



fig. 18. 

 1847. Cyclostoma subasperum Sowerby, Thesaurus conchyliorum, vol. 1, p. 142, 



pi. 28, fig. 159. 



Shell gigantic, chestnut-brown, with axial and spiral lines of bluish 

 white, which are more or less distributed in varicial streaks. The slight 

 tubercles are also inclined to be white. Interior of the aperture and peri- 

 stome brown. Nuclear whorls decollated in all our specimens. Postnuclear 

 whorls inflated, strongly rounded, appressed at the summit, and marked 

 by slender, closely spaced, retractively curved axial riblets, of which 388 

 are present on the last whorl. The spiral sculpture consists of threads a 

 little stronger than the axial ribs. Of these, 29 are present on the last 

 turn between the summit and the periphery, 12 on the base, and 21 on 

 the umbilical wall. Those on the umbilical wall are materially stronger 

 than those on the base and spire. The junctions of the axial ribs and 

 spiral threads form slender tubercles that have their long axis parallel 

 with the axial sculpture. Suture moderately well constricted. Periphery 

 inflated, strongly rounded. Base moderately long, openly broadly um- 

 bilicated. The last whorl solute for about one-tenth of a turn. Aperture 

 very broadly oval ; peristome double, the outer moderately expanded on 

 the outer and basal lip, more so on the inner lip and narrower at the 

 parietal wall ; the inner reflected and appressed to the outer. Operculum ? 



The specimen described and figured, one of 2 collected by Eyerdam 

 (U.S.N. M. No. 380333), comes from Pestel, Haiti. It has 5 whorls 

 remaining and measures : Height, 39.3 mm. ; greater diameter, 25.8 mm. ; 

 lesser diameter, 21.0 mm. 



Though we do not have the operculum, all the features proclaim this 

 to be a Licina. 



L,ICINA tiABEO (MUUer) 



Plate 18, Figure 2 



1685. Buccinum umbilicatuvt Lister, Historiae sive synopsis methodicae conchy- 

 liorum, pt. 1, pi. 25, fig. 23. 

 1774. Nerifa labeo Muller, Vermium terretrium et fluviatilum, vol. 2, pp. 180-181. 



Shell large, pale reddish brown, chestnut-brown on the early turns, 

 paler on the last. On the last there are axial dark varicial streaks ; peri- 

 stome and interior of aperture white. Nuclear whorls ? Postnuclear whorls 

 well rounded, narrowly shouldered at the summit, and marked by almost 

 vertical axial riblets, of which 202 are present on the last turn. The 

 spiral sculpture consists of threads a little stronger than the axial ribs, 



