252 TRANSACriONS OF THE WAGNEIl FREE 



Odontostomia (Syrnola) caloosaensis n. s. 

 Plate 15, figure J2 b. 



Newer Miocene of the Cape Fear River at the Guioii and Purdy marl- 

 beds (?); Pliocene of the Caloosahatchie ; Post-Pliocene of North Creek, Little 

 Sarasota Bay, Florida, Willcox ; living in 16 fathoms sand off Cape Fear, North 

 Carolina, and southward to East and West Florida, in grassy weed be- 

 tween tides ; thence to the Bahamas (Brown) and Samana Bay, Santo Domingo, 

 Couthouy. 



Shell small, white or pale brownish with a paler peripheral band when 

 living, with an immersed small sinistral nucleus and six subsequent whorls ; 

 apex rather pointed, sides of the spire slightly flattened ; suture very distinct; 

 last whorl a little constricted, its suture tending to coil below rather than at the 

 periphery of the antecedent whorl ; aperture entire, pointed behind, the an- 

 terior portion a little produced ; plait lagging behind the pillar in the adult, 

 more conspicuous in younger shells; a chink exists behind the lip, but the 

 shell is not umbilicated. Lon. of shell 3 4; max. lat. i.o mm. 



This species has been in the writer's possession for a number of years, 

 represented by recent specimens. It appears to be rather rare in the fossil 

 state. In the adult, looking perpendicularly to the plane of the aperture into 

 the mouth, the plait on the pillar is invisible, as represented in our figure. It 

 may be seen from the side and is fairly obvious in the young. It differs from 

 the next species by its more inflated, pupoid form, smooth surface and larger 

 size. In both the sinistral nucleus is buried in the tip of the spire and in- 

 visible. 



Some imperfect specimens from the Cape Fear River obtained by Mr. 

 Johnson resemble this species, but are more inflated, with only four and a half 

 or five whorls and a much less acute spire. These are hardly perfect enough 

 to apply a name to, but seem too distinct to be regarded merely as a globose 

 variety of S. caloosaensis. 



Odontostomia (Syrnola) attenuata n. s. 

 Plate 13, figure 8. 



Pliocene marl of the Cape Fear River, North Carolina (Johnson) ; living 

 in 430 fathoms, coral mud, off the Rebecca shoals. East Florida, Dr. Rush. 



Shell resembling the preceding, with the same number of whorls (when 

 living of a waxen white), but more cylindrical, with the sutures more 

 appressed, the last whorl less constricted, the plait on the pillar stronger and 

 more evident, and the general form more slender. The surface is marked 

 with obsolete spiral lines not everywhere apparent; it is probable that the adult 

 has the peristome continuous, but the specimens examined are not completely 

 mature. Lon. 3.3; max. lat. 0.7 mm. 



The living specimen is slightly more robust than the fossil, and therefore 

 has the sutures somewhat more evident, but otherwise agrees exactly with it. 



