232 GEODIA ERINACEUS. 



Geodia distincta Lindgren. 



Zool. auz., 1S97, 11, p. 48G. Zool. jalirb. Syst., 1898, 11, p. 343, plate 17, fig. 15, plate 18, fig. 19, 

 plate 20, fig. 3 a-k, a', d'. Lendenfeld, Tierreich, 1903, 19, p. 111. 



Tuberous. 



Large choanosomal cmphioxes: 1.5-1.8 mm. by 32 fi. Minute dermal 

 amphioxes: 290 by 12 /i. Orthotriaenes: rhabdome 1.8-2.5 mm. by 48 /x; clades 

 concave to the rhabdome, 240 /t long, sometimes one or two bifurcate. Pro- 

 triaenes (probably mesoprotriaenes) : rhabdome 2.33-3 mm. by 12 /x; clades 

 135 [JL long; cladome 120 p. broad and 130 /j. high. Anatriaenes: rhabdome 

 3.4 mm. by 12 fi; clades 72 /i long; cladome 84 /f broad and 60 fi high. 



Large choanosomal oxyasters: rays blunt, roughened; centrum small; 

 total diameter 44 //. Small subcortical oxyasters : rays spined; centrum 4 /(, whole 

 aster 16 p., in diameter. Large strongylosphaerasters: rays numerous, short, and 

 thick, with spines on their terminal faces; centrum very large; total diameter 

 28 /.(. Small strongylosphaerasters: centrum 2.5 /Jt, whole aster 8 p, in diameter. 

 Sterrasters: spheroidal, 68 by 56 /Jt. 



Western Pacific. Java Sea ; Java. 



Geodia erinaceus (Lendenfeld). 



Tierreich, 1903, 19, p. 107. 



Cydonium erinaceus Lendenfeld, Descriptive catalogue sponges Australian museum, 1888, p. 36. 



The following description is based on an examination of part of the type 

 specimen in the British Museum. 



Massive flattened, margin mostly lobose, or digitate; up to 20 cm. long. 

 In spirit: dirty white to brown. Spicule-fur chiefly of large orthotriaenes. 



Large choanosomal rhabds: attenuated towards both ends, one or both ends 

 usually rounded; 3.5-4.6 mm. (Ldf., 1888, 2 mm.) by 23-49 //. Minute dermal 

 rhahds : mostly amphiox ; 200-300 (Ldf. , 1888, 320 //) by 10-12 //. Orthotriaenes : 

 rhabdome 3.5-4.2 mm. (Ldf., 1888, 1-3 mm.) by 40-50 p.; clades concave to the 

 rhabdome throughout their whole length, 400-550 p long; clade-angles 90-100°. 

 Mesoproclades: rare; rhabdome 4.8-5.2 mm. by 10-20 ^; clades usually irregu- 

 lar and one or two often reduced, fully developed ones 50-60 p long; clade- 

 angles 49-56°; epirhabd 30-70 p long (not mentioned by Ldf., 1888). Large 

 anatriaenes: rare; rhabdome 13 p thick; clades 30 p long; clade-angles 63° 

 (not mentioned by Ldf., 1888). Minute dermal anatriaenes: rhabdome termi- 

 nally rounded, about 280 by 2-3.5 p at the cladome, and 3-5.5 p in the middle; 

 clades 6-9 p long; clade-angles 39-54° (not mentioned by Ldf., 1888). 



