334 PROCEEDINGS OF THE NATIONAL. MUSEUM Vol.89 



The type, U.S.N.M. No. 355888, has a little more than 5 whorls 

 remainmg and measures: Length, 13.5 mm.; greater diameter, 7.5 

 mm.; lesser diameter, 5.7 mm. 



ANNULARIA (TROSCHELVINDEX) ARANGIANA MAGISTRA, new subspecies 



Plate 38, Figure 4 



We have seen this race from Loma del Gato and from Buena Vista, 

 south of Bayamo, both in the Sierra Maestra. It differs from the 

 typical race in being much more conspicuously spinulose at the junc- 

 tions of the axial riblets and spiral cords, and in having the outer 

 peristome much more strongly fluted and much more denticulated on 

 the inner lip. 



The type, U.S.N.M. No. 535551, which comes from the Loma de 

 Gato, has 5.6 whorls remaining and measures: Length, 12.8 mm.; 

 greater diameter, 7.0 mm.; lesser diameter, 5.3 mm. 



ANNULARIA (TROSCHELVINDEX) BEBINI (Arango) 



Plate 38, Figure 9 



1865. Choano-poma hebmi Arango, in Pfeiffer, Monographia pneumonopomorum 



viventium, suppl. 2, pp. 100-101. 

 1920. Annularia {Annularia) bebini Henderson and Bartsch, Proc. U. S. Nat. 



Mus.,vol. 58,p. 73. 



Shell very elongate-conic, flesh colored, with irregular dots and 

 streaks of brown, the heaviest of which are usually on the spiral 

 threads; the decollated end is bro^vn and the peristome is conspicu- 

 ously rayed with brown, corresponding to the dark spiral lines which 

 are conspicuously shown within the aperture; the nuclear whorls are 

 chestnut brown at the suture. Nuclear whorls 2.2, rather large, 

 inflated, strongly rounded, forming a rather blunt apex, microscopi- 

 cally granulose except for the last part, which shows the beginning of 

 the postnuclear sculpture. Postnuclear whorls moderately well 

 rounded, marked by slender, retractively slanting, rather closely 

 spaced axial riblets, of which 2 or 3 become fused into small denticles 

 at the summit. The spiral sculpture consists of spiral threads, which 

 are a little stronger than the axial ribs. Of these 15 occur between 

 the summit and the suture on the last turn. The junction of the 

 axial riblets and the spiral threads does not form conspicuous nodules, 

 but the pits between them give to the whorl a somewhat fenestrated 

 pattern. Suture strongly constricted. Periphery of the last whorl 

 strongly inflated, well rounded. Base rather short, moderately 

 rounded, marked by the continuation of the axial riblets and 8 spiral 

 threads. Eight additional spiral threads are present on the umbilical 

 wall. The latter are a little stronger than those on the outside, while 



