464 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
under great magnification. The peristome is very little salient; the peristomice is 
semilunar and deformed interiorly by the avicularium; the apertura is semilunar, 
with a proximal border slightly convex. The ovicell is hyperstomial placed on the 
distal zooecia; it opens above -the apertura in the peristomie. The median avicu- 
larium is small, a little salient, oblique, nearly round. 
Measurements. — Peristomice 
| A/>e=0.06-0.08 mm. 
\lpe—0A0 mm. 
Zooecia 
(71.3=0.40-0.50 mm. 
(7.3=0.20-0.30 mm. 
Affinities. — This small species is remarkable on account of the great facility 
with which the zooecia are more or less bordered on the same zoarium. We have 
not seen an appreciable difference from Reuss’ species, and we believe, our identi- 
fication is good. 
It differs from Smittina exigua in its much smaller micrometric dimensions 
(Lz= 0.50 mm. and not 0.60 mm.), in its costular pleurocyst not porous in appear- 
ance, and in its incrusting zoarium. 
It differs from Smittina sordida in the absence of lyrula, and of frontal avicu- 
larium and in the presence of interareolar costules. 
Occurrence. — Middle Jacksonian: Eighteen miles west of Wrightsville, John- 
son County, Georgia (rare) ; 3 4 miles north of Grovania, Georgia (rare) ; one-half 
mile southeast of Georgia Kaolin Company Mine, Twiggs County, Georgia (rare) ; 
17 miles northeast of Hawldnsville, Georgia (rare). 
Upper Jacksonian (Ocala limestone) : Old Factory, miles above Bainbriclge, 
Georgia (rare) ; Chipola River, east of Marianna, Jackson County, Florida (rare). 
Geological distribution. — Rupelian (Stampian) of Germany (Reuss). 
Plesiotypes. — Cat. Nos. 64127-64129, U.S.N.M. 
SMITTINA PUNCTURATA, new species. 
Plate 61, figs. 5-8. 
Description. — The zoarium incrusts bryozoa or shells. The zooecia are large, 
swollen, utricular, distinct, elongated; the frontal is very convex, bordered by a 
line of small scattered areolae; it is formed of a pleurocyst very finely porous; 
tlie much developed peristomie bears an avicularium. The peristomice bears in 
front a short, false rimule; the peristome is thick and sharp; the lyrule is wide and 
bifurcated. The ovicell is small, globular, hyperstomial, of the same nature as the 
frontal. The avicularium is median, elongated, with pivot, its beak directed toward 
the top. The ancestrula is small, bordered by a mural rim and provided with a 
semilunar apertura. 
M easurements. — Peristomice 
f^??e=0.16 mm. 
\lpe=0.VS mm. 
Zooecia 
(773=0.75-0.80 mm. 
|/s=0.60-0.70 mm. 
Affinities. — In the external aspect and its large dimensions this species is close 
to Smittina collum. It differs from it in the median position (and not lateral) 
of its avicularium and in its porous and never costular pleurocyst. 
Occurrence. — Middle Jacksonian (Castle Hayne limestone) : Wilmington, North 
Carolina (common). 
Cotypes. — Cat. No. 64135, U.S.N.M. 
