130 THE SPONGES OF THE WEST-CENTRAL PACIFIC 



definitely spined at their ends. Their dimensions are 3.5 ll by 225 ll. The 

 spicules of the endosome are styles 5 ll by 245 ll to 6 fx by 260 ll. The 

 microscleres are typical onychaetes 1 [x by 215 ll and smaller. 



Typical Tedania ignis is a West Indian sponge, where it was first de- 

 scribed as Thalysias ignis by Duchassaing and Michelotti, 1864, page 83. In 

 the West Indies, young specimens are very much like those now under dis- 

 cussion, but the species very quickly grows up to massive size with con- 

 spicuous oscules. Therefore, this Koror specimen is identified with ignis 

 with some hesitation. It gives ample evidence of being exactly the same 

 species which occurs in the Hawaiian Islands and which has been identified 

 as Tedania ignis by de Laubenfels, 1950, page 21, but as such has misgivings 

 similar to those which are expressed here. Perhaps the Pacific Ocean speci- 

 mens, both from the Palaus and the Hawaiian Islands, should be regarded 

 as a Tedania ignis subspecies pacifica. 



GENUS TEDANDORYX, new 



This genus is erected in the family Myxillidae to have as genotype the 

 following species, Tedandoryx lissa. The megascleres are very much like 

 those in Tedania. There are dermal strongyles or tylotes. The endosomal 

 spicules are smooth styles or subtylostyles. The microscleres include many 

 which are strikingly like those of Tedania, with the exception that upon 

 careful study they prove to be modified styles rather than modified oxeas. 

 A further point of difference is the occurrence of isochelas of very peculiar 

 shape. They may be regarded as arcuate, but they are far from being 

 typical arcuate chelas. 



The genus Lissodendoryx is characterized by having arcuate isochelas 

 and lacks the onychaetes, but otherwise it resembles Tedania. The name 

 here selected for this new genus is derived from the generic names Tedania 

 and Lissodendoryx. 



Tedandoryx lissa, new 



Text Figure No. 82 



This species is here represented by the following : 

 U.S.N.M. No. 22906, My No. M. 211, here designated as type, collected 

 August 13, 1949, by diver at Lemotol Bay in the west part of the Truk 

 lagoon. The depth was 4 meters, and the substrate was dead coral. 



The shape of this sponge may be described as amorphous. The diver 

 reported a very large sponge but was able to detach only small fragments 

 about 1 cm in cubic measurement. 



The exterior color in life was carmine red; the interior vivid dark yel- 

 low. The consistency was soft. 



