R. W. H. ROW—REPORT ON THE SPONGES : NON-CALCAREA. 379 
The skeleton consists of a reticulation of spongin-fibre containing a very 
large quantity of sand-grains and some other foreign matter. 
Locality. Suakin Harbour. 
Distribution. Red Sea. 
PHYLLOSPONGIA RADIATA (/yatt). 
Synonymy :— 
1877. Carteriospongia radiata, Hyatt (16). 
1889. Cartertospongia radiata, Keller (18). 
? 1889. Phyllospongia pennatula, Lendenfeld (20). 
This species is represented by several detached fronds, all collected together 
from one locality. The largest lamella measures 190 mm. wide, 130 mm. 
high, and is 5 mm. thick, and arises from a pair of short cylindrical stalks, 
each of which possesses a disc-like base. These twin stalks are 6 mm. in 
diameter and 11 mm. high. 
The typical radiate appearance of the sponge surface around the oscula is 
very well shown in all the specimens. 
Colour in spirit white. 
Locality. Khor Dongonab. 
Distribution. Red Sea, Indian Ocean, Australia. 
Husponeta zimocca (O. Schmidt). ° 
Synonymy :— 
1862. Spongia zimocca, O. Schmidt (26). 
1879. LEuspongia ximocca, Schulze (26 a). 
1889. Huspongia zimocca, Lendenfeld (20). 
There are two specimens of this sponge in the collection—one a mere 
fragment ; the other a complete subspherical cushion measuring 15 mm. in 
length, 12 mm. in width, and 10 mm. in height from base to summit. 
Localities. Suez mud-flats; Khor Dongonab. 
Distribution. Red Sea, Mediterranean. 
EUSPONGIA OFFICINALIS, var. ARABICA (Keller). 
Synonymy :— 
1889. Huspongia officinalis, var. arabica, Keller (18). 
1906. Euspongia officinalis, var. arabica, Topsent (35). 
This variety of the bath-sponge is represented by three specimens, neither 
of which is large enough to be of value commercially. Hach consists of an 
upright mass of somewhat irregular shape, from the summit or side of which 
one or more cone-like lobes arise. These lobes are approximately spherical 
