FISHERY RESOURCES OP THE PHILIPPINE ISLANDS. 317 



65. Holothuria albiventer Semper. 



Belly dirty gray, finely punctated ; papillae whitish ; back dusky ; tentacles 

 yellowish-white. The tables have large rounded disk with numerous small holes. 

 The spire is formed by 6 or 10 rods, its large rounded top is covered with small 

 teeth ; buttons oval. Habitat : Bohol, in shallow water. 



66. Holothuria squamifera Semper. 



Papillae scale-like. Tables small, numerous; spire long narrow, with .5 trans- 

 verse beams; buttons with from 6 to 12 holes. Habitat: Philippines. 



THE MOST IlIPORTANT WORKS RELATING TO TREPANG. 



Sesiper, C. Reisen im Arehipel der Philippinen (1868), 1, pt. 2. 



TnfiEL, H. Report of the Scientific Results of the Exploring Voyage of H. M. S. 

 Challenger, 1873-76. Zoology (1882), 4, pt. 3; (1886), 14, pt. 2. 



Pearsons, J. Report on the Holothurioidce of the Gulf of Manaar. In Ceylon 

 Pearl Oyster Report. Roy. Soc. Supp. Rep. No. 5 (1903), 1, 181. 



SiUMQNDS, V. Commercial Products of the Sea. New York (1879). 



MiTSUKUBl, K. Notes on the Habits and Life-History of Stichopus japonicus 

 .Selenka, Annot. Zool. Jap. (1903-1906), 5, 1. 



jUlTSUKtTBl, K. On Changes which are found with Advancing Age in the Calca- 

 reous Deposits of Stichopus japonicus, Selenka. Ibid. (1897), 1, 31. 



Sluiteb, C. Fauna des Java-Meeres. Nat. Tidj. v. Ned. Indie (1887), 47. 



Semnka, E. Zeif. f. uriss. Zool. (1867), 17, 291. 



Bell, F. J. Zoological Collection of H. M. S. 'Alert.' (1884). 



Edwabds, 0. L. Variation, Development and Growth in Holothuria floridana Pour- 

 talSs and in Holothuria atra Jager. Biometrika (1908), 6, 236-301. 



