Measurements. 



664 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



Occurrence. Middle Jacksonian: Eutaw Springs, South Carolina (rare); 

 Wilmington, North Carolina (very rare). 



Cotypes.Crt. Nos. 65286, 65287, U.S.N.M. 



PROBOSCINA PROMINENS. new species. 



Plate 119, figs. 9-11. 



Description. The zoarium is triserial and incrusts bryozoa in long and un- 

 dulated branches. The tubes are distinct, cylindrical, punctate, arranged in 

 quincunx. The peristome is thin, orbicular, oblique ; the peristomie is very' salient 

 oblique, and often elevated to the vertical. 



Maximum width of zoarium 1.00 mm. 



Length of tube 0.60-0.80 mm. 



Diameter of peristome 0.14 mm. 



Length of peristomie 0.20 mm. 



Affinities. This species differs from Proboscina undulata in its triserial 

 zoarium (and riot quadriserial) and in its much longer tubes (0.60 mm. and not 

 0.40mm). 



Occurrence. Middle Jacksonian (Castle Hayne limestone) : Wilmington, 

 North Carolina (common). 



Cotypes.-Q.rt.. No. 65288, U.S.N.M. 



PROBOSCINA UNDULATA, new species. 



Plate 119, figs. 3, 4. 



Description. The zoarium is quadriserial and incrusts shells in undulated 

 branches. The tubes are little distinct, arranged in quincunx, slightly striated trans- 

 versally. The peristome is thin, orbicular, oblique; the peristomie is rather large 

 and oblique. 



( Length of tube 0.40 mm. 



Measurements. \ Diameter of peristome-- - 0.12-0.16 mm. 

 1 Length of peristomie-- 0.24 mm. 



Occurrence. Middle Jacksonian (Castle Hayne limestone) : Wilmington, 

 North Carolina (very rare). 



Holotype.Crt. No. 65285, U.S.N.M. 



PROBOSCINA PARVIANGULATA, new species. 



Plnte 118, figs. 1-6. 



Description. The zoarium is bi- or tri-serial and incrusts bryozoa, orbitoid 

 foraminifera, and shells in curved branches, diverging at the dichotomization at a 

 very small angle. The tubes are distinct, cylindrical, a little wrinkled transversally. 

 The peristome is thin, oblique, orbicular, or elliptical; the peristomie is oblique, 

 sometimes elevated until it is vertical, curved, and rather long. 



