PORPEIA. 



477 



GENUS 134. PORPEIA BAILEY, 1861. 



a. 



Valves oblong, with strong 

 distant puncta, inflated at the 

 median portion, constricted at 

 the apices, which are inflated, 

 rounded, obtuse, capitate, 

 finely punctate. Girdle face 

 compressed, showing flexed 

 internal septa. 



The genus Porpeia includes 

 four species, all fossil, except 

 P. quadriceps Bail, which has 

 been found in a living state in 

 the Gulf stream and at the 

 Galapagos Islands. 



I give in the text (fig. 208) 

 ig, 2oB.-Porpeiaquadrata. P- quadrata from Sta. Monica. 



It is represented in a with, and in b without, the sutural membrane which 

 covers it. 



GENUS 135. TABULINA BRUN, 1889. 



b. 



a. 



\ ,; ;: .".;. V.. ^t?..' ' 'c,*o/ - '"'.'.Y.'-y''-'- fl 





Valve flattened, tabular, 

 broadly elliptic, furnished with 

 hyaline channels, radiant and 

 transverse ; four protuber- 

 ances rounded and striated. 

 Girdle face rectilinear. 



I give in the text (fig. 209) 

 from one of my photographs a 

 drawing; of Talndina Testudo 

 Bum., the unique species of the 

 genera. It is a very rare form 

 which was discovered by Pro- 

 fessor Brun. in the Limestone of 

 Yedo (Japan). 



Fig. 209. Tabulina Testudo. 



