128 
BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 
Subgenus Flustramorpha Gray, 1848. 
1848. Flustramorpha Gray, List of British Animals in British Museum, pt. 1, Centroniae or Radiated 
animals. 
The operculum closes the ovicell; it is trapezoid. The zoarium is chitinous. 
“Zoarium erect, radicate, bilaminar, composed of irregular lobes, bordered and 
loosely connected by chitinous tubes; mouth coarctate; a lateral pouch-like vibra- 
cularium.” (Busk.) 
Genotype.—Flustramorpha ( Flustra ) marginata Krauss, 1837. Recent. 
Fig. 24.—Genus Calloporina Neviani, 1895. 
A-F. Calloporina decorata Reuss, 1847. A. The zooecium is furnished with three distal dietellae, 
and the curved belts on the ovicell, at the base of which are seen the fine pores of the endooecium, are 
canal like cavities between the endooecium and the distal calcified part of the ectooecium. Between 
these canals, which open through a circle of pores, the two layers of the zooecium have united; X 40. 
B. A portion of the zooecium, magnified X 75. C. Operculum, X 100. (A-C, after Levinsen, 1909.) 
I). Operculum, X 85. E. Mandible, X 85. (D, E, after Waters, 1887.) F. Portion of a fossil zoarium. 
(After Manzoni, 1875.) 
Genus CALLOPORINA Neviani, 1895. 
1895. Calloporina Neviani, Briozoi fossili della Farnesina e Monte Maria presso Roma Paleonto- 
graphia Italica, Pisa, vol. 1, p. 107. 
The frontal is garnished with lateral areolar pores. Costules and avicularia 
are present. The ascopore is circular. 
Genotype.—Calloporina ( Cellepora) decorata Reuss, 1847. 
Range. —Helvetian-Recent. 
The known species of the genus are: 
Calloporina ( Cellepora ) decorata Reuss, 1847. 
Calloporina ( Lepralia ) diaderha MacGillivray, 1868. 
Calloporina (Microporella ) renipuncta MacGillivray, 1882. 
Calloporina ( Microporella) scandens MacGillivray, 1884. 
