GEODIA EXIGUA. 251 



Large oxyasters : from four to eleven conical or cylindrical, pointed or trun- 

 cate, spined rays, 1-3.5 fi thick; total diameter 20-15 /z (Sollas, 1888, 26 /(). 

 Large oxysphaerasters: connected by transitions with the oxyasters; from fifteen 

 to twenty conical rays; 0.8-1.7 /i thick with spine-verticils near their ends; cen- 

 trum 3-4.5 /(, whole aster 9-18 /i, in diameter (not mentioned by Sollas, 1888). 

 Small sphaerasters : regular, or rarely irregular, ataxastrose; from six to eighteen, 

 cylindrical or cylindroconical, tinincate or blunt-pointed, spined rays, 0.8-2 /i 

 thick; centrum 2-5, whole aster 4.6-8 fi, in diameter. Steri-asters: 84-110 by 

 73-94 by 60-74 {i. 



Eastern Pacific. Gulf of Panama: Mexico (probably Pacific coast). 



Geodia magellani (Soll.vs). 



Lbndenfeld, Tierreich, 1903, 19, p. 107. Thiele, Zool. jahrb. Suppl., 1905, 6, p. lOS. 

 Cydonium magellani Sollas, Proc. Roy. Dublin soc, 1886, 5, p. 197. Rept. voy. "Challenger," 1888, 

 25, p. 221, plate 21, figs. 1-14. 



In spirit: brownish white. 



Amphioxes: 3.927-5.71 mm. by 51.6-58 ji. Dicliotriaencs: rhabdome 

 3.927-4.82 mm. by 64-90 /(; main clades 127 /i, end clades 275 /n long. Ana- 

 triaenes: rhabdome rounded terminally, 7.14-7.5 mm. by 19-23.7 /t; clades 

 110-116 n long; cladome 160-175 /i broad and 103-119 fi high. 



Choanosomal oxyasters: total diameter 16 fi. Subcortical oxysphaerasters: 

 rays spined; centrum 8 ft, whole aster 21.7 fi, in diameter. Small sphaerasters: 

 rays cylindroconical, truncate; centrum large; total diameter 12 fi. Sterrasters: 

 spheroidal 123 by 103 ft. 



Southeastern Pacific. Chile; Calbuco: Patagonia; Tom Bay, 50° 8' 30" S., 

 74° 41' W. ; Port Churruca, 52° 45' 30" S., 73° 46' W. 



Geodia ezigua Thiele. 

 Zoologica, 1S9S, 24, p. 11, plate 6, fig. 8a-h. Lendenfeld, Tierreich, 1903, 19, p. 115. 



Small, cylindrical. Dry: whitish. 



Amphioxes 1 mm. by 11 fi. Orthoplagiotriaenes: rhabdome 1-1.2 mm. by 

 15 fi; clades 100 fi long. Anatriaenes: rhabdome long and slender; clades 

 30-40 fi long. 



Large spJuier asters: rays cylindroconical, blunt pointed; centrum well de- 

 veloped; total diameter 18 ft. Large strongylasters: rare; total diameter 12 

 fi. Small strongylasters : total diameter 6 p.. Sterrasters : 58 by 52 pi. 



Northwestern Pacific. Amami-Oshima : Liu-Kiu Islands. 



