68 STREPTAXIS. 



S. SUTURALIS, Martens. PI. 12, fig. 23. 



Shell perforate, globosely conical, thin, white; whorls t^-, 

 'Obliquely costulately striate, the last smooth below ; suture 

 planulate and costulate ; lip white, widely reflected below, 

 flexuous above. DLam., 28 mill. 



New Granada. 



S. DUNKERI, Pfr. PI. 13, figs. 57, 62, 63, 65-61 ; PL 14, figs. 

 69-72. 



Shell rimate, light yellowish horn-color ; whorls 8, elegantly 

 costulately striate above, decussated by minute spiral lines, base 

 smooth, shining, excavated, with remote radiating impressed 

 lines, excavated around the umbilicus ; lip white, reflected. 



Diam., 29 mill. 



Brazil; New Granada. 



The synonyms include var. claum, Lobbecke (figs. 65-67), 

 which equals S. Funcki, Pfr. (PL 14, figs. 69-72), from New 

 Granada ; they are distinguished by the umbilicus being nearly 

 or entirely closed. The specimens before me clearly indicate 

 the specific identity of these forms. 



S. SUBREGULARIS, Pfr. PL 12, figs. 16-18. 



Turbinately semiglobose, narrowly umbilicated, whorls 7, 

 closely obliquely costulate above, obsoletely decussated by 

 revolving lines, smooth beneath ; hyaline white ; margin of aper- 

 ture narrowly reflected. Diam., 21 mill. 



Brazil. 

 S. CONTUSUS, F^r. PL 14, figs. 76-78. 



Shell minutely perforate, yellowish corneous, whorls 7-8, cos- 

 tulately striated and minutely decussated above, smooth below ; 

 lip white, shortly reflected. Diam., 21 mill. 



Brazil. 

 S. UBERIFORMIS, Pfr. PL 14, fig. 94. 



Profoundly rimately perforate, rather thin, diaphanous, light 

 greenish corneous ; whorls 6^, closely costulately striate above, 

 decussated by very light striae, base subplanulate, smooth ; lip 

 shortly expanded-reflected. Diam., 18 mill. 



Brazil. 



Hidalgo (Yiaje Pacif., 41) considers this a variety of the pre- 

 ceding species. They are certainly very closely allied, but the 



