210 THE SPONGES OF THE WEST-CENTRAL PACIFIC 



Duchassaing and Michelotti, 1864, page 102, described Terpios fugax 

 from the West Indies, and these specimens are exceedingly like those from 

 the type locality. De Laubenfels, 1950, page 28, discusses Terpios zeteki as 

 occurring in the Hawaiian Islands. Its type locality is the vicinity of the 

 Panama Canal at the Pacific end, see de Laubenfels, 1936, page 450. This 

 species has spicules less pronouncedly pentactin or hexactin but verging in 

 that direction. Like all large specimens of Terpios fugax, it has a yellow 

 endosome. Its ectosome, however, is usually one or the other of two colors, 

 a bright red, or a dull bluish green, each specimen being the same color 

 throughout as to ectosome. It is worthy of comment that adjacent to No. M. 

 324 there was found and collected Specimen No. M. 325, which was quite 

 similar to it, except that its ectosome was bright red. Does this indicate a 

 resemblance to Terpios zeteki? On the other hand, No. M. 325 does not have 

 the hexactinellid spiculation, and its consistency was slimy, and it is not at 

 present identified. 



Terpios aploos, new 



Text Figure No. 143 



This species is here represented by the following : 

 U.S.N.M. No. 23141, My No. M. 525, here designated as type, collected 



September 20, 1949, by diver in northwest Guam on Dungas Beach, 



which is northeast of Agana. The depth was 1 meter, and the substrate 



was sand. 

 U.S.N.M. No. 22843, My No. M. 134, collected July 5, 1949, by diver in the 



Pearl Pool in the western portion of the lagoon at Ebon Atoll. The depth 



was 5 meters, and the substrate was coralline algae. This specimen is 



identified only with great hesitation. 



This species is amorphous, reaching a height of 4 cm and a diameter of 

 12 by 18 cm. 



The ectosome color in life was slaty gray, and the endosome color was 

 ochre yellow ; but throughout a zone about 14 mm thick, the slaty gray ecto- 

 some blended into the ochraceous endosome. The consistency was softly fragile. 



cC 



B 



r c 



Text Figure No. 143. Spicules of Terpios aploos. A: Commonplace tylostyle, X 182. 

 B: Head of a style, showing multiple, obtuse branches, X 782. C: Head of a common- 

 place style, X 782. D: Head of a spicule which is almost a tylostyle, X 782. 



