430 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
On the young zooecia (fig. 14) the ovicell is more salient and the frontal avicu- 
larium is farther removed from the apertura. Thus the variations of the pleuro- 
cvst extraordinarily deform the primitive characters. 
Occurrence . — Wilcoxian (Bashi formation): Woods Bluff, Alabama (rare). 
Cotypes. — Cat. No. 63855, U.S.N.M. 
Genus ANARTI1ROPORA Smitt, 1867. 
1867. Anarthropora Smitt, Kritisk forteekning ofver Skandinaviens Hafsbryozoer, Ofver- 
sigt Kongl, Yetenskaps-Akademiens Forhandinglar, vol. 24, Bihang, p. 7. 
“Zooecia with the oral extremity slightly produced and free, subtubular ; orifice 
terminal, semicircular; an avicularian pore on the elevated portion of the cell in 
front; special pore wanting.” (After Hincks, 1880.) 
Genotype.— Anarthropora ( Lepralia ) monodon Busk, 1860. 
Fig. 128. — Genus Anarthropora Smitt, 1867. 
A-D. Anarthropora monodon Busk, 1860. A 
Zooecia, X 30. (After Hincks, 1880.) B. Operculum. 
C. Section of tentacle, seen in profile, greatly magni- 
fied. (B, 0 after Jullien, 1903.) D. Stellate pores of 
the frontal, X 200. (After Levinsen, 1909.) 
salient, simple, orbicular; there are three of 
lateral ones. 
Range. — Latdorfian-Recent. 
The anatomy was described by Jul- 
lien in 1904. 
This genus, deprived of ovicell, 
may perhaps be better classed in the 
family Adeonidae. 
ANARTHROPORA (?) VERRUCOSA, new specie ® 
Plate 7, fig. 20. 
Description . — The zoarium incrusts 
bryozoa and shells. The zooecia are 
elongated, distinct, fusiform ; the 
frontal is convex and verrucose. 
The aperture is semilunar ; the proxi- 
mal border is somewhat concave; 
the peristome is complete, salient, 
garnished with some distal spines. 
No ovicell. The avicularia are small, 
them, one above the aperture and two 
M easurements . — Aperture 
^a=0.06-0.07 mm. 
la= 0.06 mm. 
Zooecia 
Xs= 0.35-0.40 mm. 
7z=0. 25-0.30 mm. 
Affinities . — The stellate pores which ornament the frontal of Anarthropora 
monodon Busk, 1860, are only visible on the young zooecia. On our specimens we 
have never observed them; we are not even very certain that the verrucosities ob- 
served are hollow. Nevertheless the very special arrangement of the avicularia 
obliges us to classify our specimens in Anarthropora. 
Occurrence .- — Midwayan (Clayton limestone) : One mile west of Fort Gaines, 
Georgia (rare) ; Luverne, Crenshaw County, Alabama (very rare). 
Holotype. — Cat. No. 63825, U.S.N.M. 
