NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
315 
Fig. 87. — Genus Figularia Jullien, 1886. 
A-F. Figularia figularis Johnston. 1847. A, B. Zooecia and avicularia, X 25. (After 
Hincks, 1880.) pf, pyriform fossa of Hincks=wide stigma of Busk. C. Detail of eostules. 
(After Norman, 1903.) D, E. Two zooecia seen on the dorsal face, exhibiting the internal 
structure of their contents. (After Jullien, 1886.) jin fig. D the testicle is still without 
spermatozooids ; the ovary possesses an egg already in process of development ; at the base 
of the ovicell is seen an epithelial covering. In fig. E the testicle contains spermatozooids, 
indicated by very fine lines ; the ovary contains three nonfertile ovules, and the ovicell a larva 
or an egg in full development, a, lophophore in the tentacular sheath; l>, mouth; c, pharynx; 
d, esophagus ; e, stomach ; /, gastric caecum : g, intestine ; h, anus , i, retractor muscles of 
the operculum; j, parietal muscles; 7c, testicle; 7, deferent canal; m, irisoid (obturator dia- 
phragm of the tentacular sheath); n, ovicell; o, ovary; p, egg in process of development 
(larva) ; q, epithelium of the base of the ovicell; r, pseudo-cellular debris of the brown body, 
sometimes containing diatoms and radiolaria ; s, brain (so-called .esophagal ganglion) ; t, cer- 
vical nerve; u, cellular tissue, under the abdominal wall; v, rectractor muscles of the polypide; 
x, folds of the tentacular sheath ; z, orifice of the ejaculatory canal on the irisoid. F. A 
zooecium decalcified, X 25. (After Waters, 18S9. ) 
G— I. Figularia clitliridiata Waters, 1887. G. Avicularian mandible, X 85. H. Opercu- 
lum of ovicelligefous zooecium, X 85. I. Operculum of ordinary zooecium, X 85, (G-I after 
Waters, 1887.) 
J, K. Figularia philomela Busk, 1884. J. Basal view of the zooecium. The distal parietal 
muscles pm' are stronger than the other groups pm. cs, compensatrix ; occl, oeelusor muscles. K. 
Zooecium illustrating terminology. The frontal shield is composed of hollow calcareous costulae, 
alternately arranged on the two sides of the zooecium. The rows of pores correspond with the in- 
tervals between the costulae. The compensatrix and some of the parietal muscles are indicated. 
(After Harmer, 1902.) 
