186 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Family GRaNTID &, Dendy. 
LEUCANDRA PRIMIGENIA (faeckel). 
Synonymy :— 
1872. Leucetta primigenia, Haeckel (8). 
1905. Leucandra prinugenia, Dendy (3). 
A single specimen from the mud flats at Suez. 
Distribution. Cosmopolitan. 
‘LEUCANDRA PRIMIGENIA var. MICRORAPHIS (Haeckel). 
Synonymy :— 
1872. Leucetta primigenia v. microraphis, Haeckel (8). 
Two specimens, one from the coral-reef on Engineer Island, Khor Dongola, 
the other from a piece of coral near the reef off Cape Elba, Egyptian Sudan 
frontier, in 10 fathoms of water. 
Distribution. Red Sea ; Torres Straits, Australia. 
LEUCANDRA ASPERA (O. Schmidt). 
Synonymy :— 
1852. Sycon asperum, O. Schmidt (15). 
1866. Grantia aspera, O. Schmidt (15). 
1867. Grantia aspera, Gray (6) 
1872. Leucandra aspera, Haeckel (8). 
A considerable number of fragments, none more than 10 mm. in diameter, 
occur in the collection from the mud flats and a buoy in Suez Harbour. 
Distribution. Mediterranean; Red Sea. 
Family GRANTILLID&, noy. 
A dermal cortex is always present covering over the chamber layer. 
The skeleton includes subdermal prochiacts*, and may or may not include 
subdermal sagittal triradiates and subdermal quadriradiates. Subgastral 
prochiacts may or may not be present. Chambers and skeleton arrangement 
as in the Grantide. 
As only a single genus is at present included in the family it is unnecessary 
to discuss the family characters separately. 
* For definition of this term see description of the genus Grantilla. 
