228 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 85 



CHONDROPOMETES (CHONDROTHYROMA) SEGREGATUM FELIPENSE, new subspecies 



Plate 12, Figure 2 



This is a medium-sized thin-shelled race. It is of pale buff ground 

 color, Avith the peristome much paler. The whorls and base are con- 

 spicuously marked with almost continuous dark brown spiral bands. 



Our shells come from a small mogote I/2 kilometer west of Kilo- 

 meter 14. 



O 



7 o?"'//- 



Figure 79. — Disti-ibution of the subspecies of Chronilropoinetes (Chondrothyroma) segre- 

 gatum: (1) Ia<iU}iitnsctise; (2) Inureani; i'.i) arangoi; (4) vallei; (5) segregtitum ; (6) 

 felipensc; (7) sporadicum ; (8) manieyi. 



The type, U.S.N.M. no. 468725, an almost complete specimen, has 

 5.2 whorls renuiining and measures: Length, 19.7 mm; greater diam- 

 eter, 17.3 mm ; lesser diameter, 12.6 mm. 



The strong spiral coloi- bands distinguish this from the other larger 

 subspecies. Bartsch collected a dead specimen on Cayo San Felipe, 

 which seems indistinguishable from this race. 



CHONDROPOMETES (CHONDROTHYROMA) SEGREGATUM LAGUNITASENSE, new 



subspecies 



Pl.\tb 12, Figure 3 



Shell buff with broad, decidedly interrupted spiral zones of brown. 

 Some of these marks are wider than the spaces that separate them. 

 Peristome pale buff. 



