OPHItTRANS OF THE PHILIPPINE AND ADJACENT WATERS. 331 



One small specimen (Cat. No. 40916, U.S.N.M.). 



Notes. — The specimen is of small size and the diameter of the disk 

 does not exceed 5 mm.; the arms are broken off near the base and 

 measure only 10 mm. in length. Although it is not in very good con- 

 dition, it is perfectly recognizable and very well characterized. The 

 large dorsal spines are not claviform, as I found them in the indi- 

 viduals which I described in 1905. 



Ophiomastix mixta is known from different localities in the Sunda 

 Archipelago, where it was found by the Siboga, in the Fiji Islands, 

 etc. 



OUHIOMASTIX VENOSA Peters. 



See for bibliography : 

 Ophiomastix venosa Koehleb ('04a), p 73, figs. 28, 29; ('07), p. 329.— Mac- 

 intosh ('11), p. 161.— H. L. Cxabk ('15), p. 296. 



Locality. — Malochin Harbor, Linapalan Island ; December 18, 1908. 

 One specimen (Cat. No. 40937, U.S.N.M.). 



OPHIARTHRUM ELEGANS Peters. 



See for bibliography : 

 Ophiarthrum elegans Koehleb ('05), p. 73; ("07), p. 329. — H. L. Clabk 

 ('08), p. 297; ('15), p. 297.— Matsumoto ('17), p. 351, fig. 100. 



Localities. — A Ibatross station 5165; Sulu (Jolo) Archipelago, Tawi 

 Tawi Group; Observation Island bearing N. 70° W., 11.86 kilometers 

 (6.4 miles) distant (lat. 4° 58' 20" N., long. 119° 50' 30" E.) ; 16 

 meters (9 fathoms) ; February 24, 1908; Co. 



One specimen (Cat. No. E. 369, U.S.N.M.). 



Marongas ; shore ; coral head ; October 2, 1908. 



Three specimens (Cat. No. E. 368, US.N.M.). 



Mactan Island ; April 30, 1909. 



One specimen (Cat. No. E. 371, U.S.N.M.). 



Port Palapag; June 3, 1909. 



One specimen (Cat. No. E. 372, U.S.N.M.). 



Batan ; July 22, 1909. 



One specimen (Cat. No. E. 370, US.N.M.). 



Samoa ; Sir Charles N. E. Elliot. 



Ten specimens (Cat, Nos. 35615, E. 373, U.S.N.M.). 



Family OPHIODERMATIDAE. 



OPHIARACHNA QUINQUESPINOSA, new species. 



Plate 7, figs. 1-3. 



Locality. — Albatross station 5172; vicinity of Jolo; Jolo Light 

 bearing E., 45.87 kilometers (24.75 miles) distant (lat. 6° 03' 15" N. ? 



