66 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



SACCORHIZA CALCILEGA (Rhumbler). 



Hypemmmina calcilega Rhumbler, Zool. Jahrb. Ablh. Syst., vol. 24, 1906, p. 24, 

 pi. 2, figs. 1, 2. 



Description. — Test free, consisting of a nearly spherical proloculum 

 and a tubular portion, wall composed of calcareous sponge spicules 

 and of other foreign calcareous granules; color white. 

 Length 0.6-0.9 mm., breadth 0.15-0.24 mm. 



Distribution. — Two specimens from which Rhumbler described this 

 species were found in shallow water at Laysan. Both are fragmentary 

 specimens of small size, but their characters, especially the sponge 



spicules, would place the spe- 

 cies in the genus Saccorhiza, as 

 here considered. The calcare- 

 ous nature of the foreign mat- 

 ter of the wall is not surprising 

 when the almost universal cal- 

 careous nature of coral reef 

 material is considered. 



Genus TOLYPAMMINA 

 Rhumbler, 1895. 

 . Hyperammina II . B. Brady 

 (part), Quart. Journ. Micr. 

 Sci., vol. 19, 1879, p. 33; 

 Hep. Voy. Challenger, Zool- 

 ogy, vol. 9, 1884, p. 260. 

 Tolypammina Rhumbler (type, 

 Hyperammina vagans H. B. 

 Brady), Nachr. kon. Ges. 

 Wiss. Gottingen, 1895, p. 83; 

 Arch. Protistk., vol 3, 1903, 

 p. 276. 

 Serpulclla Eimer and Fickert, 

 Zeitschr. wiss. Zool., vol. 

 65, 1899, p. 674. 



Description. — Test typically 

 adherent by its under surface ; 

 but may become free, consisting of an elongated oval proloculum and 

 long irregular tube, unbranched, composed of sand grains and reddish- 

 brown cement. 



Rhumbler has proposed 

 the above genus for the Hy- 

 perammina vagans of Brady. 

 The attached habit and char- 

 acter of building the test 

 seem sufficient grounds for 

 its separation from others of 



the Species Usually assigned Fig. 84,-Tolypammina vagans X10. from photograph. 



to Hyperammina. Eimer and Fickert also proposed a generic name 

 for this species, but the name proposed by Rhumbler is several years 

 earlier and is here used. 



Figs. 82-83.— Saccorhiza calcilega. 82, specimen show- 

 ing proloculum. x H5. 83, specimen showing aper- 



TURAL PORTION. X 60 (AFTER RHUMBLER). 



