OPHIURANS OF THE PHILIPPINE AND ADJACENT WATERS. 297 

 OPHIOTHELA DANAE Verrill. 



Plate 59, figs. 1, 2, 3 ; plate 103, fig. 1. 

 See for bibliography: 



Ophiothela danae Kxehler ('05), p. 117; ('05b), p. 458; ('07), p. 340; 

 ('07b), p. 253.— H. L. Clark ('15), p. 284.— Matsumoto ('17), p. 231. 



Localities. — Albatross station 5139; in the vicinity of Jolo; Jolo 

 Light bearing S. 51° W., 6.67 kilometers (3.6 miles) distant (lat. 

 6° 06' 00" N., long. 121° 02' 30" E.) ; 36 meters (20 fathoms) ; Feb- 

 ruary 14, 1908 ; co. S. 



Two specimens (Cat. No. 41274, U.S.N.M.). 



Albatross station 5147; Sulu (Jolo) Archipelago, in the vicinity 

 of Siasi; Sulade Island (E.) bearing N. 3° E., 15.57 kilometers (8.4 

 miles) distant (lat. 5° 41' 40" N., long. 120° 47' 10" E.) ; 38 meters 

 (21 fathoms) ; February 16, 1908; co. S., Sh. 



One specimen (Cat. No. 41275, U.S.N.M.). 



Albatross station 5151; Sulu Archipelago, Tawi Tawi Group; 

 Sirun Island (C.) bearing N. 58° E., 35.77 kilometers (19.4 miles) 

 distant (lat. 5° 24' 40" N., long. 120° 27' 15" E.) ; 44 meters (24 

 fathoms) ; February 18, 1908; co. S., Sh. 



One specimen (Cat. No. 41273, U.S.N.M.). 



Albatross station 5169; Sulu Archipelago, in the vicinity of Sibutu 

 Island; Sibutu Island (SE.) bearing N. 38° E., 14.83 kilometers 

 (8 miles) distant (lat. 4° 32' 15" N., long. 119° 22' 45" E.) ; 18 

 meters (10 fathoms) ; February 27, 1908; co. S. 



One specimen (Cat. No. 41271, U.S.N.M.). 



Albatross station 5218; between Burias and Luzon; Anima Sola 

 Island (E.) bearing N. 10° W., 3.71 kilometers (2 miles) distant 

 (lat. 13° 11' 15" N., long. 123° 02' 45" E.) ; 36 meters (20 fathoms) : 

 April 22, 1908 ; crs. S. 



One specimen (Cat, No. 41272, U.S.N.M.). 



Notes. — The specimens from station 5139 are very small, and the 

 diameter of their disks seldom exceeds 1.5 mm.; that from station 

 5147, Avhich is a little larger, is in process of schizogonic multipli- 

 cation, and the completely developed arms are only four. The other 

 two have six almost equal arms. 



On plate 103, as figure 1, 1 show the hook formed by the first ven- 

 tral arm spine, at the base of the arms (b) and in their terminal 

 part («.), as well as the other arm spines (c). 



On the dorsal surface of the disk the specimen from station 5151 

 shows rather large and abundant tubercles such as are usually seen 

 in the species ; it agrees well with the descriptions which have been 

 published by Liitken in 1872 and by Loriol in 1893 under the name 

 of O. isidd-cola. On the dorsal surface of the arms there may be 



