80 



A.R.G. PRICE AND F.W.E. ROWE 



absent from all specimens examined. The remaining character of the 

 red (or in some cases a faded, cream) ring on the anus is the only 

 means of distinguishing this species from D. savignyi. In the field 

 the two species are easily distinguished by the colour pattern, D. 

 savignyi lacking the red ring and having characteristic, irridescent 

 blue lines along the upper interamulacra. 



3. Echinothrix calamaris (Pallas, 1774) 



See. Clark & Rowe, 1971: 140; 153; Clark & Courtman Stock, 

 1976: 226; Rowe & Gates, 1995: 208. 



Material. 801111A/2 (1), 810422B/1 (1), 810425C/4 (1), 

 810426B/4 (1), 810426B/13 (1), 810501K/2 (1), 810501K/3 (1). 



Collection sites. Muscat, Oman; S. Sabang Bay (to S. of Klah), 

 E. Sabang Bay, Rubiah, Ug Seukundo, Pula We, Sumatra. 



Habitat and depth. Subtidal rock, subtidal rock / coral / sand, 

 coral reef; 0-20 m. 



Family STOMECHINIDAE 



4. Stomopneustes variolaris (Lamarck, 1816) 



SEE. Clark & Rowe, 1971: 140; 153; Clark & Courtman Stock, 

 1976: 228; Sloan et al., 1976: 118; Rowe & Gates, 1995: 246. 



Material. 810123B/4 (1). 



Collection sites. Galle, Sri Lanka. 



Habitat and depth. Subtidal rock; 5 m. 



Family TEMNOPLEURIDAE 



5. Mespilia globulus (Linnaeus, 1758) 



See. Clark & Rowe, 1971: 140; 155; Rowe & Gates, 1995: 250. 



Material. 810502F/5 (1). 



Collection sites. Klah, Pula We, Sumatra. 



Habitat and depth. Subtidal rock; 5 m. 



6. Microcyphus ceylanicus Mortensen, 1942 



SEE. Clark & Rowe, 1971: 140; 156. 

 Material. 820204A/11 (1). 

 Collection sites. SW Kalpitiya, Sri Lanka. 

 Habitat and depth. Coral reef; 3-5 m. 



7. Salamacis bicolor L. Agassiz, 1 846 



See. Clark & Rowe, 1971: 140; 156; Clark & Courtman Stock, 

 1976: 232. 



Material. 810126B/1 (1). 



Collection sites. Galle, Sri Lanka. 



Habitat and depth. Coral reef; 4-5 m. 



Family TOXOPNEUSTIDAE 



8. Toxopneustes piloleus (Lamarck, 1816) 



See. Clark & Rowe, 1971: 142; 156; Clark & Courtman Stock, 

 1976: 234; Rowe & Gates, 1995: 258. 



Material. 801 1 14C/1 (1); 810424A/1 (1). 



Collection sites. Muscat, Oman; W. Klah, Pula We, Sumatra. 



Habitat and depth. Coral reef; 10-12 m. 



Family PARASALENIIDAE 



9. Parasalenia gratiosa A. Agassiz, 1 863 



See. Clark & Rowe, 1971: 142; 157; Rowe & Gates, 1995: 233. 

 Material. 810422B/5 (2). 



Collection sites. S. Sabang Bay (to S. of Klah), Sumatra. 

 Habitat and depth. Coral conglomerate; 2-8 m. 



Family ECHINOMETRIDAE 



10. Echinometra mathaei (de Blainville, 1825) 



See. Clark & Rowe, 1971: 142; 157; Clark & Courtman Stock, 

 1976: 239; Sloan et al., 1979: 1 19; Price, 1983: 76; Rowe & Gates, 

 1995:211. 



Material. 801111A/1 (5), 810204A/10 (1). 



Collection sites. Muscat, Oman; SW Kalpitiya, Sri Lanka. 



Habitat and depth. Coral reef, rock / coral / sand; 0-5 m. 



Remarks. Two forms of this species are represented. The speci- 

 men from Sri Lanka is relatively large, with h.d. = 48.7 mm. It has 4 

 pore-pairs per arc, the spines are uniformly pale blue/green and the 

 test, when cleaned, is whitish in colour. The 5 specimens from 

 Muscat, Oman are smaller, ranging in size from h.d. = 10-21 mm. 

 They have 5 pore-pairs per arc, the spines are dark olive green tipped 

 with lilac/brown and the test, when cleaned, is greenish in colour. 

 Echinometra mathaei is clearly a complex species which is in need 

 of critical investigation to determine whether, as it is currently 

 identified, it comprises a single species or more than one closely 

 related species (see Mortensen, 1943; Tsuchiya & Nishira, 1984). 



11. Echinostrephus molaris (de Blainville, 1825) 



See. Clark & Rowe, 1971: 142; 157; Clark & Courtman Stock, 

 1976: 239-240; Sloan etal., 1979: 1 19; Rowe & Gates, 1995: 212. 



Material. 801210B/6 (1), 8 10423 A/5 (1), 810427B/3 (1), 

 810427D/5 (1), 810502G/4 (1) 



Collection sites. Chetlat, Lakshaweep (Laccadive) Islands; Ug 

 Bau, Lho Pria Laot, Ug Murung, Klah, Pula We, Sumatra. 



Habitat and depth. Coral reef, subtidal rock, subtidal rock / 

 coral; 0^M) m. 



