366 
BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 
Genus EMBALLOTHECA Levinsen, 1909. 
1909. Emballotheca Levinsen, Morphological and Systematic Studies on the Cheilostomatoas 
Bryozoa, p. 333. 
The ovicell is hyperstomial and opens above the aperture by a wide orifice which 
the operculum may close when it opens the aperture. The aperture bears a concave 
proximal border and a wide rounded rimule. The operculum has muscular attach- 
ments near the border ; that of the ovicelled zooecia is larger. The frontal and the 
ovicell are covered by the same tremocyst with large pores surmounting a very finely 
perforated olocyst, 
Genotype. — Emballotheca ( Eschara ) quadrata MacGillivray, 1880. 
Range. — J ack- 
sonian-Recent. 
The known recent 
species of this genus 
are : 
E mb all o theca 
(, Schizoporella ) fur- 
cata Busk, 1884-. 
E mb alio theca 
( Eschara ) quadrata 
MacGillivray, 1880. 
E mb alio theca 
( Lepralia ) sub im- 
merse MacGillivray, 
1879. 
EMBALLOTHECA LATI- 
CAPITATA, new species. 
Fig. 109. — Genus Emballotheca Levinsen, 1909. 
A-D. Emballotheca subimmersa MacGillivray, 1879. A. Zooecia, X 25. 
B. Decalcified cell, showing lateral tubular connections of the avicularian 
chamber. C. Operculum of ordinary zooecium, X 85. D. Operculum of 
ovicelligerous zooecium, X 85. (A-D after Waters, 1889.) 
E-I. Emballotheca quadrata MacGillivray, 1880. E. Zooecia, X 23. 
Six different zooecia take part in the formation of the ovicell figured. 
F. Aperture of zooecium, X 75. G. Operculum of ovicelligerous 
zooecium, X 55. H. Operculum of ordinary zooecium, X 55. I. Avicu- 
larian mandible, X 75. (E-I after Levinsen, 1909.) 
Plate 48, fig. 6. 
Description. — The 
zoarium is free and 
bilamellar. The zoo- 
ecia are large dis- 
tinct, very little elongated, polygonal, enlarged distally; the frontal is convex, 
formed of a tremocyst closely united to the subjacent, finely perforated olocyst; 
the tremopores are wide and separated by small tuberosities. The aperture is 
large, elongated, with a very large, semicircular rimule, with two salient denticles 
serving as pivot. The ovicell is enormous, somewhat embedded in the distal zooecia, 
globular and salient. Two large, triangular avicularia are placed above the aper- 
ture; their beak is directed toward the medium axis of the zooecia; they have a 
strong calcareous pivot. 
Measurements. — Aperture of \ha= 0.25 mm. ^ . fZs=0.80mm. 
ordinary zooecia! la= 0.20 mm. 
Zooecia ' 
Us =0.70 mm. 
. . rA«=0.32mm. 
Aperture of ovicelled zooecia A 
i \la= 0.30 mm. 
