Habitat.—Tropical Atlantic, Station 347, surface.
Genus 659. Cannorrhaphis,[[277]] Haeckel, 1879, Sitzungsb. med.-nat. Gesellsch. Jena, Dec. 12, p. 4.
Definition.—Cannorrhaphida with a skeleton composed of tubular acicular pieces, which are spiny, cylindrical or spindle-shaped tangential needles, either with lateral spines or branches.
The genus Cannorrhaphis differs from the preceding closely allied Cannobelos in the spiny shape of the tangential acicular spicula, which are studded either with short spines or with longer lateral branches.
1. Cannorrhaphis spinulosa, n. sp. (Pl. [101], figs. 3, 4).
Tangential tubes cylindrical, straight, gradually tapering towards the two pointed ends, densely studded with conical spines, arising perpendicularly. (The specimen figured, fig. 3, exhibited two ovate central capsules, each of which contained two large nuclei, with numerous nucleoli.)
Dimensions.—Length of the tubular spicula 0.3 to 0.5, breadth 0.01 to 0.015.
Habitat.—North Pacific, Station 244, surface.
2. Cannorrhaphis lampoxanthium, n. sp.
Tangential tubes cylindrical, more or less curved, suddenly tapering towards the two pointed ends, densely studded with irregular conical spines of unequal length, which arise obliquely from their surface.