Keratoisis paucispinosa (Wright & Studer, 1889)  

Transcribed from Wright & Studer 1889

Axis unbranched. From 6 to 7 dm. long; calcareous internodes 3 to 4 cm. in length; base of broad, calcareous, root-like projections; basal internodes solid; apical, hollow and grooved, the whole axis very flexible; a somewhat irregular alternate verticils, a little crowded to one side of the axis. No spicules on the body of the polyp facing the axis, a few fusiform spicules greatly varying in size on the dorsal aspect, eight large spine-like dentate spicules surrounding the tentacular base of the polyp. Tentacles large, massive, very imperfectly retractile, studded with minute, irregular, dentate spicules. The large spine-like spicules on the polyp bodies measure 5-2; 5-3.5; 3-.13 mm. The small needle-like spicules measure 0.14-0.16; 0.4-0.03 mm. The irregular dentate spicules of the tentacles measure 0.13-0.03 mm. smaller. Three nearly perfect specimens of this species were taken off Japan; it seems an abundantly distinct species.