574 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Phylactella ( Leprnlia ) collaris Norman, 1866. 
PhylacteUa (Lepralia) eximia Hincks, 1877. 
Phylactella punctigera Waters. 1899. 
Phylactella columnaris Kirkpatrick, 1888. 
PHYLACTELLA INFUNDIBULUM Canii and Basslcr, 1917. 
Plate 71, figs. 24-26. 
1917. PhylacteUa infundibulum Canu and Bassler, Synopsis of American Early Tertiary 
Clieilostome Bryozoa, Bulletin 96, United States National Museum, p. 67. pi. 6. fig. 2. 
Description. — The zoarium incrusts other bryozoa. The zooecia are large, 
distinct, elongated, oval; the frontal is quite convex; it is formed of a tremocyst 
with very small pores separated from each other by fine granules. The apertura 
is formed of a large semicircular anter, separated by two cardelles from a very 
concave poster; the peristome is long, tubular, depressed in front, and interrupted 
behind by a wide distal tongue; the peristomie forms a sort of funnel around 
the apertura. The ovicell is large, salient, globular, finely porous and granular; 
it is hyperstomial, recumbent, and it opens into the peristomie. 
Measurements. — Apertura 
j72a=0.16 mm. 
[Za=0. 16-0.17 mm. 
Zooecia 
[£3=1.25 mm. 
17,3=0.72 mm. 
This superb species is unfortunately quite rare. 
Occurrence. — Middle Jacksonian (Castle Hayne limestone) : Wilmington, 
North Carolina (rare). 
Cotypes. — Cat. No. 62607, U.S.N.M. 
PHYLACTELLA PARVICOLLUM, new species. 
Plate 72, fig. 9. 
Description. — The zoarium incrusts shells. The zooecia are distinct, elongated, 
elliptical or oval ; the frontal is convex and formed of a tremocyst with very small 
pores separated by small salient granulations. The apertura is orbicular; it is 
formed of a large anter separated by two small cardelles from a small concave 
and finely denticulated poster; the peristome is small , little salient, often inter- 
rupted distally by a small salient tongue. 
M easurements. — Apertura 
A<z=0.15 mm. 
Z«=0.15 mm. 
Zooecia 
j £s=0.60 mm. 
[7.3=0.45-0.50 mm. 
Affinities. — This charming species is unfortunately rare and we have not had 
the good fortune to discover the ovicell. 
It differs from Phylactella infundibulum in its micrometric dimensions, which 
are twice as small. On the other hand, its zooecial length, 0.60 mm., is much 
greater than that of Phylactella parvicella (£3=0.40 mm.). 
Occurrence. — Middle Jacksonian (Castle Hayne limestone) : Wilmington, North 
Carolina (rare). 
Holotype. — Cat. No. 64192, U.S.N.M. 
