NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
719 
DESMEPLAGIOECIA DICHOTOMA, new species. 
Plate 125, figs. 9-11. 
Description. — The zoarium incrusts shells upon which it forms claviform, 
dichotomously branched lobes. The fascicles are crowded and arranged alternately 
on each side of the zooecial axis; they are formed of three to six zooecia. The 
tubes are short, distinct, little convex; the peristome is thin. The ovicell is con- 
vex, short, transverse; it interrupts five fascicles. The protoecium is very small 
in rapport with the ancestrula. 
I Width of the fascicles 0.12 mm. 
Measurements . — Separation of the fascicles 0.16 mm. 
I Width of the branches 1.2-2. 5 mm. 
Occurrence . — Upper Jacksonian (Ocala limestone) : Old Factory about 1-| 
miles above Bainbridge, Georgia (rare). 
Cotypes.- — Cat. No. 65311. U.S.N.M. 
DESMEPLAGIOECIA COMPRESSA, new species. 
Plate 125, figs. 16-19. 
Description . — The zoarium has the Reticulipora form of growth with com- 
pressed fronds. The fascicles are incomplete, irregular, perpendicular to the zone 
of growth. The tubes are distinct, little convex. The peristome is orbicular, thin, 
salient. The zone of growth is very broad. 
Variations . — According to fragments observed, the ovicell appears to be that 
of D esmeplagioecia ; but this must be confirmed. 
The fascicles are very irregular in length ; they are often even replaced by 
cellular rows, in which the peristomes are not adjacent. 
The Reticulipora form appears to develop chiefly in very calcareous waters. 
Occurrence.- — -Upper Jacksonian (Ocala limestone) : Chipola River, east of 
Marianna, Jackson County, Florida (rare). 
Cotypes. — Cat. No. 65315, U.S.N.M. 
DESMEPLAGIOECIA LOBATA, new species. 
Plate 126, figs. 4-7. 
Description . — The zoarium is free, bilamellar, composed of lobes which are 
rounded, irregular, undulated, ramified. The fascicles are very short, formed of 
four or five tubes, scarcely salient, arranged on each side of the axis of folding 
or undulation of the lobes. The tubes are indistinct, isolated at the center and 
scattered on the margins. The zone of growth is .thick and rather wide. 
It is at hazard that we classify this species in the genus D esmeplagioecia as 
we possess only two nonovicellcd specimens. 
Occurrence. — Middle Jacksonian: Eutaw Springs, South Carolina (rare). 
Cotypes.- — Cat. No. 65317, U.S.N.M. 
