378 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



spine usually underlying the adoral spine of the succeeding plate. 

 Subambulacral spines 2, sometimes 3. considerably shorter, round- 

 tipped, heavier but not broader than the furrow spines (thicker in a 

 transverse direction), and forming a straight series. External to 

 these are 2 or 3 granules larger than the succeeding. Part or all of a 

 second series of smaller granules belongs to the adambulacral plates. 



Mouth plates small with 4 or 5 acute marginal spines and 2 to 4 

 similar suboral spines. These are slightly longer than the coiTe- 

 sponding adambulacral spines. 



Madreporic body, subcircular or elliptical, slightly variable in size, 

 situated a little less than its own diameter from inner edge of mar- 

 ginal plata. 



Type.—Q^i. No. 32638, U.S.N.M. 



Type-locality . — Tonquil Island, Gumila Reef, south of Zamboanga, 

 Mindanao. 



Distribution. — Sulu Archipelago, Mindanao and eastern Palawan, 

 reefs. 



Sfecimens examined. — Three; besides the type 1 from each of the 

 following localities : Tataan Pass, Simaluc Island, Tawi Tawi Group, 

 Sulu Archipelago, coral reef. 



Port Langcan, Dumaran Island, eastern Palawan, coral. 



Remarks. — This form may turn out to be a variety of F. miUe- 

 porella, although it shows decided similarities to F. armata Koehler, 

 and F, halansae Perrier. It differs from the latter in having nar- 

 rower rays, tuberculate marginals, and spatulate furrow spines. The 

 width of the rays ma}' be well within the possibilities of F. mille- 

 porellu but they are longer than specimens from Samoa. 



FROMIA MILLEPORELLA (Lamarck). 



Asteriaft viiUejyoreUa Lamarck, 1816, vol. 3, p. 2.53, No. 35. 

 Fromia milleporella Gray, 1840, p. 286. 

 Distribution. — Red Sea, Mauritius, Madagascar, Ceylon, to Samoa 

 and Fiji Islands, via the Moluccas and .southern Philippines; New 

 Caledonia; also Ryukyu (Liu Kiu) Islands, Japan. 



Specimen examined. — One from Babuan Island, Jolo, coral reef. 

 Remarks. — This specimen is small and imperfexit. It does not 

 show the characteristics of hemiopl<t. 



Genus NARDOA Gray.' 



Nardoa Gray, 1840, p. 286. Type, N. vai-iolata (Lamarck). 



This old and well-known genus is greatly in need of a thorough re- 

 vision. A number of species have not been figured. Koehler has 

 rendered a great service by his descriptions and photographs of sev- 

 eral East Indian forms (1910a). 



During a brief visit to London in 1914 I had the opportunity of 

 examining the specimens of Nardoa in the B ritish Museum. I was 



^Melia Gistel. Naturgeschlchte des Thierreichs, 1848, p. 176. T.vpe, MeUa variolaia 

 (Lamarck). 



