CUBAN ANNULARUDAE TORRE AND BARTSCH 181 



OPISTHOSIPHON (BERMUDEZSIPHONA) INSULANUM SCOPULOKUM. new subspecies 



Plate 13, Figure 7 



This race was collected by Dr. Bermudez on Cayo de la Salina, 

 east of Caibarien. It is distinguished from 0. (5.) insulanum insu- 

 lanum by having the suture much less strongly constricted, with the 

 denticles at the summit much more pronounced and less abundant. 

 The outer lip is much more expanded and the interrupted spiral 

 bands are less pronounced. In the type 43 axial ribs are on the first 

 of the remaining turns and 115 are on the last whorl. 



The type, U.S.N.M. No. 535454, has 3.5 whorls remaining and 

 measm-es: Length, 8.4 mm.; greater diameter, G.l mm.; lesser diam- 

 eter, 4.7 mm. 



OPISTHOSIPHON (BERMUDEZSIPHONA) INSULANUM INSULANUM. new subspecies 



Plate 13, Figure 5 



This race was collected by Dr. Bermudez on Cayo de la Aguada, 

 east of Caibarien. It is distinguished from 0. (5.) insulanum scopu- 

 lorum in having the suture much more strongly constricted, with the 

 denticles at the summit less feeble. The strong constriction gives to 

 the shell an almost pupoid appearance. The type has 35 axial ribs 

 on the first of the remaining turns and 105 on the last whorl. 



The type, U.S.N.M. No. 535453, has 3.5 whorls remaining and 

 measures: Length, 10.0 mm.; greater diameter, 5.6 mm.; lesser diam- 

 eter, 4.7 mm. 



OPISTHOSIPHON (BERMUDEZSIPHONA) SALUSTH Torre and Henderson 



Plate 13, Figure 9 



1920. Opisthosiphon (Opisthosiphona) salustii (Torre and Henderson) Henderson 



and Bartsch, Proc. U. S. Nat. Mus., vol. 58, p. 67, nomen nudum. 



1921. Opisthosiphon (Opisthosiphona) salustii Torre and Henderson, Proc. 



U. S. Nat. Mus., vol. 59, pp. 256-257, pi. 40, figs. 5, 7. 



Shell very broadly elongate-conic, flesh colored, with 4 interrupted 

 spiral bands of brown on the spire and 3 on the base. The umbilical 

 wall is pale brown and the outer lip of the outer peristome is rayed 

 with brown. Nuclear whorls 2, small, well rounded, microscopically 

 granulose, with the last portion of the last tiu-n showing the begiiming 

 of the postnuclear sculpture. Postnuclear whorls inflated, strongly 

 rounded and marked by slightly retractively slanting axial ribs, 

 which are very distantly spaced on the early turns and which become 

 gradually more closely approximated as the shell increases in size; on 

 the last tm-n they are separated by spaces as wide as the riblets. 

 In the type, 32 of these riblets occur upon the first of the remaining 

 turns, 38 upon the second, 66 upon the third, and 108 upon the last. 



