22 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Rhabdammina discreta — nioterial examined. 



RHABD.\MMINA DISCKETA H. B. Brady, var. SPICULOSA, new variety. 



Description.— Test different from the typical in the construction 

 of the test which in the variety is composed almost wholly of frag- 

 ments of sponge spicules, the other characters snch as the constric- 

 tions of the wall bemg typical. 



Distribution. — Type-specimens from Albatross station D2150 in 

 382 fathoms in the Caribbean Sea (13° 34' 45" N.; 81° 21' 10" W.) 

 bottom temperature 45.75° F.: bottom given in the record as white, 

 coarse sand. 



Although the main material of the test is spicules, the character- 

 istic reddish brown cement is used and the test as a whole has the 

 appearance of typical specimens except for the smoothness of the 

 exterior until a close examination is made. Instead of long acerosc 

 spicules being used, as is the case with the variety of E. cornuta 

 obtained from this station, the spicules are all short and broken. 



Rhabdammina discreta. var. spiculosa. — viaterial examined. 



