664 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Occurrence. — Middle Jacksonian: Eutaw Springs, South Carolina (rare); 
Wilmington, North Carolina (very rare). 
Cotypes. — Cat. Nos. 65286, 65287, U.S.N.M. 
PROBOSCINA PROMINENS, new species. 
Plate 119. figs. 9-11. 
Description . — The zoarinm 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. 
M easurements . — 
Maximum width of zoarinm 
Length of tube 
Diameter of peristome 
Length of peristomie 
1.00 mm. 
0.60-0.80 mm. 
0.14 mm. 
0.20 mm. 
Affinities . — This species differs from Proboscina undulata in its triserial 
zoarinm (and not quadriserial) and in its much longer tubes (0.60 mm. and not 
0.40 mm). 
Occurrence . — Middle Jacksonian (Castle Hayne limestone) : Wilmington, 
North Carolina (common). 
Cotypes.— Cat. 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. 
I Length of tube 0.40 mm. 
Measurements . — Diameter of peristome 0.12-0.16 mm. 
[ Length of peristomie 0.24 mm. 
Occurrence . — Middle Jacksonian (Castle Hayne limestone) : Wilmington, 
North Carolina (very rare). 
Holotype . — ■ Cat. No. 65285, U.S.N.M. 
PROBOSCINA PARVIANGULATA, new species. 
Plate 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. 
