236 THE SPONGES OF THE WEST-CENTRAL PACIFIC 



This is an irregularly rounded mass : in the first case, 6 by 8 by 16 cm, 

 and in the second case, about 4 by 6 cm. 



The exterior color in life was golden brown with a slightly greenish 

 subcutaneous layer. The interior was pale brown to yellow. The consistency 

 was cartilaginous. 



The surface is tuberculate, with tubercles about 2 mm high and 3 mm in 

 diameter. It is somewhat hispidated by scattered protruding spicules. The 

 pores and oscules cannot be made out, because they close at the time of col- 

 lection ; but as in Tethya they doubtless occurred in the narrow valleys be- 

 tween the surface tubercles. 



The ectosome is corticate, 0.5 to 1 mm in thickness. The endosome may 

 be called radiate ; but, as in all large sponges of fundamentally radiate type, 

 the structure shows plainest near the surface, whereas the interior has its 

 spicules more or less in confusion. 



The skeleton consists primarily of strongyloxeas, as in Tethya, 20 /x by 

 700 [x in dimensions. Much thinner forms occur in small numbers but are 

 probably merely juvenile or developmental forms. Some of these are as little 

 as 3 {x in diameter but as much as 850 jx long. Intermediates occur between 

 these and the obviously mature spicules. 



The species name ana is selected merely as a concise name without 

 especial significance. 



ORDER CHORISTIDA Sollas 



FAMILY ANCORINIDAE Gray 



GENUS HEZEKIA de Laubenfels 



Hezekia walkeri, new 



Text Figure No. 163 



This species is here represented by the following: 

 U.S.N.M. No. 22925, My No. M. 231, here designated as type, collected 



September 1, 1949, by divers in Iwayama Bay, Koror, in the Palaus. The 



depth was 2 meters, and the substrate was dead coral. 

 U.S.N.M. No. 23054, My No. M. 434, collected August 1, 1949, by diver in 



east Ponape (Matalanim) from a reef in the lagoon near an entrance to 



the lagoon. The depth was 5 meters, and the substrate was dead coral. 

 U.S.N.M. No. 22871, My No. M. 166, collected July 11, 1949, by diver near 



the east end of the lagoon near Lado Islet at Likiep Atoll. The depth 



was 5 meters, and the substrate was dead coral. 

 U.S.N.M. No. 22870, My No. M. 165, collected the same date and general 



locality as the preceding. 

 U.S.N.M. No. 23006, My No. M. 386, also collected the same date and 



general locality as the preceding two specimens. 



