204 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



width of poriferous zones; single pores in ambulacral plates beyond 

 petals. 



Periproct. — Marginal, slightly visible from below, longitudinal, at 

 top of slight groove. 



Peristome. — Anterior, pentagonal, wider than high. 



Floscelle. — Bourrelets well developed; phyllodes (text fig. i68) 

 single pored, broad, with four to five pores in each outer series, two 

 in each inner ; buccal pores present. 



Tub er dilation. — Adorally, tubercles slightly larger than adapically ; 

 no naked zone in interambulacrum 5. 



Occurrence. — Middle Eocene of South Carolina. 



Location of type specimen. — Academy of Natural Sciences, Phila- 

 delphia, No. 1477. 



Genus NEOCATOPYGUS Duncan and Sladen 



Neocatopygiis Duncan and Sladen, 1882. Pal. Indica, ser. 14, vol. i, pt. 2, p. 76. 

 Type species by monotypy. Neocatopygus rotnndus Duncan and Sladen, 1882. 



GENERIC DESCRIPTION 



Medium size, highly inflated, broad, flat adorally; apical system 

 anterior, monobasal; petals broad, equal in length, closing distally, 

 pores strongly conjugated, oblique to each other, ambulacral plates 

 beyond petals single pored; periproct inframarginal, oval; peristome 

 anterior, pentagonal, wider than high; bourrelets well developed, 

 forming rim around peristome; phyllodes widened, single pored, 

 pores arranged in three series in each half -ambulacrum, buccal pores 

 present; tubercles slightly larger adorally; no naked sternal region. 



Comparison with other genera. — Neocatopygus is most similar to 

 Gitolampas, but is distinguished from it by its broader and more 

 highly inflated test. 



Range and distribution. — Paleocene of India. Only one species 

 is known. 



DESCRIPTION OF TYPE SPECIES 



NEOCATOPYGUS ROTITNDUS Duncan and Sladen 

 Plate 39, figures 1-3; text figure 169 



Neocatopygus rohmdus Duncan and Sladen, 1882. Pal. Indica, ser. 14, vol. i, 

 pt. 2, pp. 76-78, pi. 16, figs. i-io. 



Material. — Three specimens were studied from the Museum of 

 Paleontology, University of California, Berkeley, Calif. The lecto- 



I 



