ASC1DIANS OF THE PHILIPPINES — VAN NAME. 79 



This is evidently a common and widely distributed species in the 

 Philippines. The stations for it listed below are all in hallow water 

 (34 fathoms or less), except one in 279 fathoms: 



No. 182. Catbalogan, Samar, April 14, 1908 (Oat No. 599B U.S.N.M.). 

 No. 147. Catbalogan, Samar, April 16, 1908 (Cat. No. 599F U.S.N.M.). 

 No. 44. Station DS555 (off Cabalian Point, Jolo Island, 34 fathoms, coarse 



sand. September 18, 1909). Two specimens. (Cat. No, (5004. 



U.S.N.M.) 

 No. 72. Station D5174 (off Jolo Light, 20 fathoms, coarse sand, March 



:.. 1908). One small specimen. (Cat. No. 5910, U.S.N.M.) 

 No. 183, Station D5536 (near Apo Island. 270 fathoms, green mini. A.UgUSt 



lit, 1909). Pour specimens. (Cat No. 6003, n.s.N.M.) 

 Nos. 138, 144. Station D5147 (<>(T Sulade Island, Sulu Archipelago, 21 



fathoms, coral sand and shells. February 16, 1908). Three 



specimens. (Cat. No. 6000 U.S.N.M.) 

 No. 71. Station D51 10 (off Siruin Island. Sulu Archipelago, 10 fathoms, 



coral and shells, February is, 1908). One small specimen. Cat 



No. 5912 U.SJN.M.) 

 No. 141. Station D5151 (off Sirum Island, Sulu Archipelago, 24 fathoms, 



coral sand and shells. February 18, 100S). One specimen. 



(Cat. No. 0001 U.S.N.M.) 

 No. 139. Station n.">ic..s (off Observation Island. Sulu Archipelago. 28 



fathoms, coral sand. February 24, 100S). One specimen. (Cat. 



No. 6002, D.S.N.M.) 



h is widely distributed in warm sens ami a number of geographical 

 races, treated as allied distinct species, or as subspecies of Pyura 

 pallida, have been distinguished. 1 A majority of the Philippine 

 specimens would find place in the typical form of the species, which 

 is recorded from Tahiti, Palau, Ceylon, the western Indian Ocean, 

 the Cape of Good Hope, and the West Indies, as they have eight or 

 nine branchial folds on one side. Those with a larger number of 

 folds would agree better with either the Japanese form, or with the 

 Australian form, grandis. The writer does not however see sufficient 

 reason to believe that more than one subspecies occurs in the Philip- 

 pines, and is inclined to question the necessity of dividing the species 

 into as many races as Michaelsen (1908) accepts. 



PYURA DUPLICATA. new species. 



Plate 31, fig. :V2. 



One of the two specimens in the collection was attached by the 

 greater part of the ventral region, and is flattened in an obliquely 

 dorso-ventral direction; the apertures are on low rough elevations on 

 the dorsal surface. The branchial and atrial apertures are about 

 equally distant from the anterior and posterior ends of the body, 

 respectively; the atrial aperture is distinctly 1-lobed, the branchial is 



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1 See especially ftticbaelsen, 1908, p. 1270, and 1912, p. lis. 



