PORIFKRA. II. 



79 



of C. morula must be supposed to completely correspond to the branches in longipinna, similis, and 

 inversa, and the figure of the skeletal structure in morula (I.e. 91) shows that the fibres of the branches 

 are inserted in the same way as those of the branchlets of the species of the other group. The same 

 fact is otherwise shown by the figure of the skeleton in Axoniderma mirabilr (1. c. 97). The branchlets 

 in the C/adorhiza-species must be regarded as corresponding to what I have called the lateral branches 

 in the Asbcsfopl/uua-species, as they are inserted in the axis in a quite similar way. Also in the genus 

 Asbcstopluma, subgenus Lycopodiua, a species is found, A. hydra, which, instead of having lateral 

 branches along the axis, has the branches collected at the top. 



1. C. abyssicola M. Sars. 



PI. XII, Fig. 2 a— f. 



1872. Cladorhiza abyssicola M. Sars, On some remarkable forms of animal life I (by G. O. Sars), 65, 



PI. VI, figs. 16-34. 

 1875. Cladorhiza abyssicola O. Schmidt, Jahresber. d. Comm. zur wissenschaftl. Unters. der deutsch. Meere 



in Kiel fur 1872 — 73, 119, Taf. I, Fig. 13. 

 1878. Cladorhiza abyssicola v. Marenzeller, Coelent. etc. d. osterreich-ungar. Nordpol-Fxp., Denkschrift. 



d. Kais. Akad. d. Wisseuschaft. Math. Nat. CI. XXXV, 371. 

 1896. Cladorhiza abyssicola Lambe, Proc. of the Roy. Soc. of Canada, Ser. 2, II, Sect. IV, 188, PI. I, 



figs. 8, 8 a — e. 



Slender, unbranched (young specimens), or with rather long brandies issuing from a central 

 axis; below a richly branched roof. The skeleton arranged in the way characteristic of the genus. Spi- 

 cula: Megasclera sfyli o-jp — o/j""": microselera of three forms, anisancorce tinguifcrcc with five teeth 

 0'02i — o-ojy"", sigmata of two forms, large ones o-o'/S — owo""", small ones with compressed end parts 

 0-040 — 0-042""". 



Of this species I have had only a slight material, and I therefore am only able to add little new 

 to the very good and exhaustive description given by Sars. Of the specimens in hand the largest ones 

 agree, as to their external form, with the description of Sars. They consist of a stalk, divided below 

 into a great number of branches or fibres, so that a richly branched root is formed; to this root some 

 bottom-material is still attached, among other things tubes of Rhabdammiua. The stalk is straight 

 and from it go off lateral branches issuing at about right angles, only directed a little upwards. The 

 lateral branches may be of different lengths, but generally they are longest below. The distance 

 between them is different. The branches may be directed to different sides, but upon the whole a 

 certain bilaterality is prevailing. Besides the branched specimens we have a couple of smaller ones 

 consisting only of a central stem without branches, but otherwise of the same structure. From the 

 stalk and branches branchlets or filiform appendages issue everywhere and on all sides. They are 

 thin, thickest at the base, and tapering a little outward; they may be of somewhat varying length, 

 but reach at most a length of ca. 5 mm . The branchlets are directed upwards in a somewhat arcuate 

 way. At the point of the stalk and the branches they become short, and at the outermost end they 

 are placed close together as quite small projections, whereby the stalk and branches here show a little 



