340 BULLETIN" 100, UNITED STATES NATIONAL MUSEUM. 



long. 121° 00' 58" E.) ; 27 meters (15 fathoms); September 18, 

 1909; Co. 



One specimen (Cat. No. E. 222, U.S.N.M.). 



Nasugbu, Luzon ; reef ; January 14, 1908. 



Four specimens (Cat. No. E. 221, U.S.N.M.). 



San Pascual. 



Two specimens. 



Batan Island. 



Three specimens (Cat. No. E. 220, U.S.N.M.). 



Samoa ; Sir Charles N. E. Eliot. 



One specimen (Cat. No. E. 224, U.S.N.M.). 



Notes. — The specimen from station 5165 is gray; the annulations 

 of the arms are narrow and of a light brown color. The three 

 others are green with darker annulations on the arms. 



In 1909 H. L. Clark discussed and cleared up the synonymy of 

 this species and showed that Pectinura marmorata Lyman, P. ram- 

 sayi Bell, P. intermedia Bell, P. stearnsii Ives, and P. venusta Loriol 

 must be united with it. 



Ophiarachnella gorgonia is one of the most widely distributed 

 species in the Indo-Pacific region; it is preeminently littoral and 

 scarcely ever descends to more than 50 meters (28 fathoms) ; but the 

 Siboga found it at the roadstead of Pasir Pandjong, on the west 

 coast of Binongka, in 278 meters (152 fathoms). 



OPHIARACHNELLA HONOBATA (Kcehler). 



Peotinura honorata Kcehleb ('04), p. 8, pi. 2, figs. 1-3. 

 Ophiarachnella honorata H. L. Clark ('09), p. 125; ('15), p. 306. 



Locality. — Albatross station 5661; Flores Sea; Cape Lassa bear- 

 ing N. 21° E., 23.16 kilometers (12.5 miles) distant (lat. 5° 49' 40" 

 S., long. 120° 24' 30" E.) ; 339 meters (180 fathoms) ; December 

 20, 1909. 



Four specimens (Cat. No. E. 203, U.S.N.M.). 



Notes. — The diameter of the disk varies between 24 mm. and 

 27 mm.; the arms reach a length of 180 mm. and may even exceed 

 this. 



The specimens all agree perfectly with the type of the species, 

 and do not show the least variation. 



The dorsal surface of the disk and of the arms is a more or less 

 dark brownish gray, or a lighter yellowish brown. 



The arms show dark annulations which involve usually two or 

 three segments, and which are separated by lighter portions including 

 usually three or four segments. The ventral surface is almost white. 

 This coloration appears to be correlated with the relatively slight depth 

 at which O. honorata has been collected. The Siboga captured it at 

 a depth of 304 meters (167 fathoms) in 5° S. lattitude and 132° E. 

 longitude. 



