122 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



tical areas formed of a large number of mesopores. The mesopores 

 are small, polygonal, variable in number about each tube. The basal 

 lamella is undulated when it is long and rectilinear when it is very 

 short. 



f Diameter of branches 5.00 mm. 



Measurements.— { Diameter of orifices 0.10 mm. 



Affinities. — We have not discovered the ovicell of this species, and 

 are therefore not able to affirm its classification without doubt, but 



'tX?l^>^.'S^3^W.j., 



B C 



Fig. 36. — Grammascosoecia porosa, new species. 



A. Tangential section, X 16. 



B. Transverse section, X 16. 



C. Longitudinal section, X 16. 

 Recent : South Africa. 



The basal lamella bifurcates. 



its structure otherwise is absolutely analogous to that of Gramma- 

 scosoecia diclwtoma Goldfuss, 1827. Evidently this reason is not 

 sufficient to classify the two species in the same genus, but it was 

 interesting to discover this same structure in a recent species. 



Occmvence. — South Africa. The specimens of this species were 

 some time ago sent to Canu by Miss Jelly. 



Cotypes. — Canu collection and Cat. No. 7378, U.S.N.M. 



GRAMMASCOSOECIA PARVIPORA, new species. 



Plate 21, fig. 7, 8. 



Description. — The zoarium is free, cylindrical. The peristomes are 

 small, arranged in regular quincunx, close to each other, thin, salient. 



