504 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Affinities. — Busk, in 1884, created the genus Reteporella for the Retepores not 
reticulated ; Jullien, in 1903, appears to have admitted this genus, but we can not 
recognize a genus based purely upon a zoarium, unless its zooecial characters are 
at the same time perfectly delimited. 
This species differs from Retepora. simplex (Busk) Reuss, 1869, in the absence 
of a labial mucro on the peristomice and of two oral avicularia. 
Occurence. — Middle Jacksonian : Wilmington, North Carolina (common) ; near 
Lenuds Ferry, South Carolina (common); Eutaw Springs, South Carolina (rare). 
Cotypes. — Cat. Nos. 64158, 64159, U.S.N.M. 
RETEPORA SCUTULATA, new species. 
Plate 65, figs. 9-14. 
Description. — The zoarium is free, reticulate ; with narrow and elongate meshes 
or fenestrae; the dorsal is smooth or very finely granulated; the vibices are rare 
and hardly salient. The zooecia are indistinct; the frontal is smooth and convex. 
The apertura is deep, buried, transverse; the peristomice is oblique, ogival; its 
anterior lip bears on one side a small avicularium, thin and elongated. The ovicell 
is little salient, smooth; it bears an upper, almost round cleft; its orifice is not 
visible. 
M easurements. — Peristomice 
\hpe= 0.05 mm. 
\lpc=0.10 mm. 
=o. t .i-i.oo mm. 
Fenestrae',/" A 
//:= 0.45-0.50 mm. 
Affinities. — This species differs from Retepora ramosa and Retepora laciniosa 
in its invariably reticulated zoarium. 
It differs from Retepora marginata Reuss, in its indistinct and nonbordered 
zooecia, and from Retepora ribicata Goldfuss, 1827, in the absence of lateral 
areolar pores. 
Occurrence. — Upper Jacksonian (Ocala limestone) : Chipola River, east of 
Marianna, Jackson County, Florida (common) ; Alachua, Florida (rare). 
Cotypes. — Cat, No. 64157, U.S.N.M. 
RETEPORA LACINIOSA, new species. 
Plate 96. figs. 12-22. 
Description. — The zoarium is free, branched, not reticulated, bifurcated, some- 
what compressed, formed of three longitudinal rows of zooecia. The dorsal is 
smooth or granular; the vibices are very little salient, and circumscribe some irregu- 
lar lozenge-shaped areas. The zooecia are indistinct; the frontal is smooth and 
convex. The apertura is semilunar (interior) and bears a minute proximal rimule 
irregularly placed; the peristomice is very oblique; it bears on its proximal lip 
a small tuberosity and a small oral avicularium separated by a slit or rimule- 
spiramen. The ovicell is hyperstomial but very deeply imbedded in the distal 
zooecia; its orifice is not visible; it bears superiorly a small slit, somewhat elon- 
gated. The small labial avicularium is frequently transformed into a large frontal 
avicularium. 
M easurements. — Peristomice. — Ipe— 0.11 mm. 
