ART. 14 FOSSIL AND EECENT BRYOZOA CAISTU AND BASSLEE 157 



CRISIA ELONGATA Milne Edwards. 1838 



Plate 30, Figure 3 



1838. Crisia elongata Milne Edwards, Memoires sur les Crisies. Annales des 

 Sciences Natuielles Zoologie, ser. 2, vol 9, p. 10, pi. 7, fig. 2. 



This species is well characterized by the great length of the seg- 

 ments, which may bear 26 to 30 tubes. Our specimens are very sim- 

 ilar to the figure of Milne Edwards, but their micrometric dimensions 

 vary visibly from the dimensions given by Waters, 1914, for specimens 

 from British East Africa. We have figured the ovicell. 



Occurrence. — Albatross Station D. 2405, Gulf of Mexico; 28° 45' 

 00" N.; 85° 02' 00" W.; 30 fms.; gray sand, broken 

 coral. 

 Pliocene: Minnitimmi Creek, Bocas Island, Almi- 

 rante Bay, Panama. 

 PUsioty pes. —Cat. No. 7481, U.S.N.M. 



CRISIA species 



Plate 30, Figures 1, 2 



We have discovered a curious segment with white joints. It is 

 close to a variety of C. denticulata figured by Hincks, 1880, but its 

 dimensions appear larger. We figure the specimen and believe that 

 it belongs to a new species, although we are not able to give it a 

 detailed description. 



Occun^ence. — Albatross Station D. 2405, Gulf of Mexico; 28° 45' 

 00" N.; 85° 02' 00" W.; 30 fms.; gray sand, broken coral. 



Family DIASTOPORIDAE Gregory, 1899 



Forma PROBOSCINA Audouiii, 182S 



In the different Gulf of Mexico localities studied we have collected 

 seven species of Siomatopora and Proboscina which are represented 

 by such unique and incomplete specimens that their description 

 would be doubtful and useless to science. 



PROBOSCINA ROBUSTA, new species 



Plate 30, Figure 7 



Description. — The zoarium encrusts sponges. It is formed of long 

 biserial branches, straight or undulated; the angle of divergence is 

 small. The tubes are short, striated transversely, terminated by a 

 very salient peristomie. The peristome is thin and orbicular. 

 Measurements. — Diameter of orifice, 0.20 mm. 



Diameter of peristome, 0.24 mm. 

 Distance of peristomes, 0.80 mm. 

 Diameter of branches, 0.64 mm. 



