226 SIMPULOPSIS. 



whitish within ; peristome simple, unexpanded, the margins joined 

 by a very thin whitish callus ; columellar margin thread-like, basal 

 and outer margins acute. Alt. 5-J, diam. maj. 9, min. 8 milL (F. 

 $0.). 



Parada, State of Oaxaca,, Mexico (Salle). 



Simpulopsis cenea PKR., P. Z. S., 1861, p. 27 ; Malak. Bl., viii, 



1861, p. 84; Monogr. Hel. Viv. v, p. 22 ; vii, p. 29, 516 REEVE, 



Conch. Icon, xiii, pi. 1, f. 7 (1862) FISCHER & CROSSE, Miss. 



Scient. Mex., Moll., p. 580, pi. 24, f. 12. MARTENS, Biol. Centr. 



Amer., Moll., p. 253 Succinea cenea MARTENS, Malak. Bl., xii, 



1865, p. 70. 



The sculpture is of very fine, crowded striae, hardly visible with 

 the naked eye. Only the original specimens collected by Salle are 

 known. 



Doubtful and spurious species, referred to Simpulopsis. 



S. SALOMONIA (Pfeiffer). PI. 63, figs. 76, 77, 78. 



Shell globose-conic, very thin, closely obliquely plicate, pellucid^ 

 shining, brownish-olivaceous. Spire conic, a little obtuse ; suture 

 impressed. Whorls 4, a little convex, the last about three-fifths the 

 total length of the shell. Aperture oblique, oval : peristome simple, 

 unexpanded, the margins regularly arcuate. Alt. 11, diam. 9 mill.; 

 aperture 8 mill, long, 6 wide (P/r. ). 



" Salomon s Islands " (Cuming coll.). 



Vitrina salomonia PFR., Zeitschr. f. Malak. 1853, p. 51 ; Monogr. 

 Hel. Viv., iii, p. 623. Simpulopsis salomonia PFR., Conchyl. Cab., 

 p. 29, pi. 6, f. 17-19. S. salomonis Pf'r., ALBERS, Die Hel. edit. v. 

 Martens, p. 309. 



Has the appearance of a Brazilian shell, and possibly the locality 

 is erroneous. If really from the Solomon Islands it will probably 

 prove to belong to the Zonitidce. Gray referred the species to Hel- 

 icarion. 



S. ANGULARIS (Ferussac). PI. 63, figs. 71, 72. 



Ferussac's figure represents a globose-conic shell somewhat like 

 S. dominicensis in form, but with the last whorl angulated around 

 the periphery (as in S. bo>'ssieri, but more stiongly). It is thin, 

 striate, olivaceous, with about 4 whorls. Alt. 10, diam. 12 mill. 



Isle of France (?). 



