150 BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



producing a reticulated pattern. The junction of the axial ribs and 

 spiral threads is minutely granulose. Suture very narrowly channeled. 

 Base well rounded, marked like the spire, and openly umbilicated, the 

 umbilical wall marked by very strong spiral cords and the continuation 

 of the axial ribs. Aperture circular; peristome double, inner slightly ex- 

 serted; the outer broadly flaringly expanded with or without rays and 

 marked by feeble concentric threads. Operculum with central nucleus 

 and a decidedly oblique lamella. 



KEY TO THE SUBSPECIES OP ABBOTTELLA ADOLPHI 



Outer peristome strongly rayed adolphi 



Outer peristome not strongly rayed peninsularis 



ABBOTTEI/LiA ADOLPHI ADOLPHI (Pfeiffer) 



Plate 26, Figure 4 



1852. Clioanoforna adolphi Pfeiffer, Monographia pneumonopomorum viventium, 



p. 167. 

 1854. Cyclostoma adolphi (Choanopoma) Pfeiffer, Proc. Zool. Soc. London, 1852, 



p. 142. 

 1854. Cyclostoma adolphi Pfeiffer, Martini-Chemnitz Conchylien Cabinet, cd. 2, 



vol. 1, pt. 19, p. 371, pi. 48, figs. 5-8. 

 1920. Abbottella adolphi Henderson and B.\rtscii, Proc. U. S. Nat. Mus., vol. 



58, p. 75. 



Shell umbilicated, conic-hemispherical, rather thin-shelled, granulated 

 and reticulated by axial ribs and spiral threads, translucent, brownish 

 yellow, with interrupted reddish brown lines. Spire convex-conic, with 

 fine spinules. Suture irregularly and distantly notched. Whorls 4.5, con- 

 vex, the last rounded, provided with several keellike spiral cords in the 

 moderately broad umbilicus. Aperture a little oblique, circular. Peristome 

 double, the inner continuous, narrowly exserted; the outer expanded 

 and concentrically ridged, somewhat wavy, rayed with brown and ex- 

 panded above into a small ear. Height, 5 mm.; diameter, 8 mm. Oper- 

 culum exactly like that of Abbottella tentorium. Collected by Salle in 

 "Haiti." 



I have not seen specimens that could without doubt be referred to 

 Abbottella adolphi adolphi and have translated Pfeififer's German de- 

 scription in Martini-Chemnitz. His figure 8 shows a form with strongly 

 rayed outer peristome, which easily differentiates it from A. a. peninsu- 

 laris. 



Salle did not collect in Haiti but in the Dominican Republic, which at 

 that time was usually referred to as Haiti. 



ARBOTTKLLA ADOLPHI PENINSULARIS, new subspecies 



Plate 26, Figures 14-16 



Shell helicoid. Nuclear whorls 1.5, well rounded, minutely granulose. 

 Postnuclear whorls inflated, strongly rounded, and marked by closely 



