The Echinoderm Fauna of South Africa. 333 



P.F. 10975. Tongaat- River, N.W. by N. '//, N., 5 miles, 36 fins. 

 S. and sh. 1 specimen ; very young. 



P.F. 12459. Umtwalurni River, N. by W., 2 miles, 25 fms. I'.rk. 

 sh. 1 specimen ; young. 



P.F. 13280. Cove Rock, N.E. by E. V/ 2 E., 4 miles, 22 fms. S. 

 and brk. sh. 2 specimens; young. 



P.F. 13520. East London, N.W. by W. 1/2 W., 2 miles. Depth ? 

 R. and brk. sh. 2 specimens; adult, line. 



P.F. 13598. Great Fish Point, W. by N., 5 miles, 22 fms. R,, 

 crl., and st. 3 specimens; young. 



P.F. 13619. Great Fish Point, W. by N., 5 miles, 22 fms. R., 

 crl., and st. 8 specimens; adult and young; fine. 



P.F. 15627. False Bay, Cape Colony, 17-27 fms. R. 1 specimen; 

 young. 



P.F. 18282. False Bay, Cape Colony, 8-10 fins. R. 2 specimens; 

 adult, fine. 



Rocks at Sea Point, Feb. 2, 1904. 1 specimen; young. 



Bathymetrical range from shore to 36 fms. 



OPHIACTIS PLANA. 



Lyman, 1869. Bull. M. C. Z., vol. 1, p. 330. 

 H. L. Clark, 1915. Mem. M. C. Z., vol. 25, pi. 10, figs. 1, 2. 



In the CHALLENGER Report, Lyman, after describing Ophiactis 

 flexuosa (p. 116), records ten, small, six-armed specimens of Ophiactis 

 from St. 142 (Agulhas Bank) as possibly young flexuosa but s;ivs 

 they can scarcely be distinguished from plana. A recent critical 

 study of the species of Ophiactis has led to the conclusion that plana 

 and flexuosa are identical, the former name being the earlier though 

 based as Lyman suggests, on young specimens. There are two very 

 young six-armed specimens of Ophiactis, 23 mm. across the disk, in 

 the PIETER FAURE collection which are certainly not either carnea or 

 abyssicola. They agree fairly well with plana, except that the radial 

 shields are not so large and the disk scales not so few and large as 

 in that species. But in both specimens, the disk is being regenerated 

 at least in part, and hence I think there is little reason to doubt 

 that these youngsters are identical with those taken bv the CHAL- 



J J 



LENGER on Agulhas Bank, and all may properly be referred to plana. 



P.F. 13227. Cove Rock, N.W. 3 / 4 W., 13 miles, 80-130 fms. Crl. 

 1 specimen; young. 



P.F. 13859. Glendower Beacon, N. 1/4 W., 21 miles, 100 fms, 

 Sh. and r. 1 specimen; very young. 



22 



