74 



Remarks. The 3 specimens were collected in a batch of 6 from 

 stn 810206A/8 with 3 specimens of O. savignyi. They run 

 unequivocably to the species O. modesta in the key provided by 

 Clark & Rowe ( 1 97 1 : 1 05) where the relationship with other conge- 

 ners is discussed by A.M. Clark (notes 25-27, pp. 103-105). Rowe 

 (in Rowe & Gates, 1995) preferred to follow the views of Clark & 

 Rowe (1971) regarding recognising the validity of the species O. 

 modesta, a course also followed herein, rather than accept the 

 sweeping synonymy of O. savignyi, which includes O. modesta, 

 given by Cherbonnier & Guille (1978). 



8. Ophiactis savignyi (Miiller & Troschel, 1842) 



See. Clark & Rowe, 1971: 82; 103; Clark & Courtman Stock, 

 1976: 164; Cherbonnier & Guille, 1978: 125; Sloan et ah, 1979: 

 102; Price, 1983: 61; Rowe & Gates, 1995: 380. 



Material. 810206A/3 (5), 810206A/8 (3), 810426A/2 (1), 

 810501E/1 (1), 810501G/3 (1), 8105011/2 (1), 810502F/4 (2). 



COLLECTION sites. Negombo, Sri Lanka; W Rubiah, Ug 

 Seukundo, E Klah, Pula We, Sumatra. 



Habitat and depth. Sponge, coral/rock, subtidal rock, coral reef; 

 5-14 m. 



Remarks. The specimens identified here are fissiparous and 6- 

 armed with trilobed dorsal arm plates and proximally 6 arm spines, 

 according well with the key characters given in Clark & Rowe 

 (1971). 



Family OPHIOTRICHIDAE 



9. Gymnolophus obscura (Ljungman, 1867) 



See. Clark & Rowe, 1971: 82; 1 17; Rowe & Gates, 1995:411. 



Material. 810124A/11 (1), 810125A/2 (1), 810430A/20d (2). 



Collection sites. Ala Gala & Deumba Gala, Galle, Sri Lanka; 

 Ug Seukundo, Pula We, Sumatra. 



Habitat and depth. Coral reef and epizoic on crinoids on subtidal 

 rock; 8-15 m. 



Remarks. This species is commonly epizoic on comasterid 

 crinoids, the host species for which have not been identified for the 

 specimens recorded herein. 



10. Ophiothela danae Verrill, 1 869 



SEE. Clark & Rowe, 1971: 84; 116; Clark & Courtman Stock, 

 1976: 141; Price, 1983: 63; Rowe & Gates, 1995:419. 



Material. 810125B/1 (3), 810206A/3/78 (4), 810425F/8 (10+), 

 8 10428 A/2 (7), 810428A/14(3), 810501A/3 (30+), 810501A/4(1), 

 810428B/1 (2), 810428D/3c (3), 810501E/9 (15+). 



Collection sites. Ala Galla, Galle & Negombo, Sri Lanka; N. 

 Udjung Lo Me (NE Sabang Bay), Ug Bau, Ug Seukundo, Ug Tapa 

 Gadja, Pula We, Sumatra 



Habitat and depth. Epizoic on macroalgae, gorgonian, fire coral 

 (Millepora sp.) sponge and on holothurians (Thelenota ananas), all 

 on rock /coral; 2-30 m. 



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



11. Ophiothrix exigua Lyman, 1 874 



See. Clark & Rowe, 1971: 84; 1 10; Cherbonnier & Guille, 1978: 

 140; Rowe & Gates, 1995: 422. 



Material. 810206A/8 (5), 810502C/1 (2), 810502E/2 (3). 



Collection sites. Negombo, Sri Lanka; E Klah, Pula We, 

 Sumatra. 



Habitat and depth. Coral/rock, sponge on coral reef and subtidal 

 rock; 5-10 m. 



Remarks. One specimen from stn 810206A/8, both from 

 810502C/1 and two from 810502E/3 are very juvenile specimens. 



12. Ophiothrix savignyi (Miiller & Troschel, 1842) 



See. Clark & Rowe, 1971: 84; 109; Cherbonnier & Guille, 1978: 

 142; Price, 1983:65. 



Material. 801114B/1 (1). 



Collection sites. Muscat, Oman (1 specimen). 



Habitat and depth. Coral reef; 2 m. 



13. Ophiothrix trilineata Liitken, 1 869 



See. Clark & Rowe, 1971: 84; 111; Clark & Courtman Stock, 

 1976: 145; Sloan etal, 1978: 103; Rowe & Gates, 1995: 423. 



Material. 810420A/5 (2), 810422B/3 (3), 810426A/2 (1), 

 810428A/9 (2), 810428C/7 (1), 810428D/3a&b (6&2), 810430A/8 

 (1), 810430A/18 (1), 810430A/21c (1), 810501D/2 (1), 810501E/2 

 (3), 810501E/5 (1), 810501E/8 (1), 810501E/9 (2), 810501E/1 1 (1), 

 810502F/2 (1), 810501F/3 (1), 810501G/1 (2), 810501G/3 (1 & 1 

 juvenile), 810501G/5 (3), 810502C/2 (1 very juvenile), 810502D/4 

 (4), 810502E/3 (4 juvenile), 810502F/2 (2 juvenile), 810502G/3 (2 

 juvenile). 



Collection sites. Klah / E Klah, Nr. Seukundo, Ug Seukundo, 

 Pula We. Sumatra, W Rubiah, Ug Bau, Ug Tapa Gadja, Pula We, 

 Sumatra. 



Habitat and depth. Coral reef, soft coral / gorgonian, subtidal 

 rock, sponge/subtidal rock, sponge; 2-30 m. 



Remarks. The majority of specimens exhibit the characteristic 

 arm colour pattern of 5 longitudinal lines alternating white and dark 

 blue. However, a few specimens bear a wide median pale longitudi- 

 nal line along the arms, and at least one specimen (810501E/2) is 

 distinctively patterned with cream blotches, the linear pattern being 

 discernable only near the ends of the arms (see Clark & Rowe, 197 1 : 

 111). Next to O. (A.) purpurea, this is the most common ophiuroid 

 species collected. 



14. Ophiothrix (Acanthophiothrix) armata Koehler, 

 1905 



SEE. Clark & Rowe, 1971: 84; 1 1 1; Rowe & Gates, 1995: 423. 



Material. 810422B/4 (15+), 810502F/6 (2). 



Collection sites. Klah / Nr. Seukundo, Pula We, Sumatra. 



Habitat and depth. Coral reef, 2-8 m. 



Remarks. This species is recorded from the Indo-Malay region, 

 tropica] Australian coasts and the South Pacific (Clark & Rowe, 



