42 Proceedings of the Biological Society of Washington. 



Ptilometra macronema (J. Muller). 



(H. L. Clark, Biol. Results Fishing Exper. F. I. S. Endeavour, 1909-14, 

 p. 23 [Bass Strait].) 

 Cosmiometra dasybrachia H. L. Clark. 

 (Biol. Results Fishing Exper. F. I. S. Endeavour, 1909-14, p. 24 [Bass 

 Strait].) 

 Compsometra incommoda (Bell). 

 (H. L. Clark. Biol. Results Fishing Exper. F. I. S. Endeavour, 1909-14, 

 p. 25 [Flinders Island].) 

 Metacrinus cyaneus H. L. Clark. 



(Biol. Results Fishing Exper. F. I. S. Endeavour, 1909-14, p. 9 [Bass 

 Strait] . ) 



Comanthus tasrnaniae, sp. nov. 



Description. — The centrodorsal is discoidal, rounded pentagonal in out- 

 line, extremely thin, 4 mm. in diameter; the cirri are arranged in a 

 single incomplete and more or less irregular marginal row. 



The cirri are XX, 14-16, slender, 10 mm. long; the first segment is 

 broader than long, the second is as long as, or slightly longer than, broad, 

 the third is twice as long as broad, the three following about two and 

 one-half times as long as broad, and their successors rapidly become 

 shorter so that the terminal eight are broader than long; these last are 

 somewhat compressed laterally and in lateral view appear slightly broader 

 than those preceding; with the one or two preceding they each bear a 

 small pointed subterminal tubercle. 



The arms are 37 in number, 65 mm. long, and resemble those of C. 

 trichoptera ; the distal edges of the ossicles of the division series and of the 

 brachials (especially the latter) are strongly everted and finely spinous. 



Habitat. — Tasmania; I have examined two specimens, one in the col- 

 lection of the Australian Museum at Sydney, the other in the collection 

 of the U. S. National Museum (No. 34976). 



Remarks. — This species probably includes the multibrachiate examples 

 listed under Dr. H. L. Clark's new species Comanthus spanoschistum from 

 Bass Strait and Tasmania. The ten armed specimens, which Dr. Clark 

 especially had in mind when he wrote the description, appear to belong 

 not to Comanthus, but to Comissia, for the lower pinnules as described 

 agree with those of Comissia. Dr. Clark notes the " absence of the pecu- 

 liar axillaries characteristic of" Comanthus trichoptera, and states that 

 " many of the specimens, even the small ones, have the genital pinnules 

 immensely swollen with the reproductive cells." 



Comanthus novaezealandiae, sp. nov. 



Description. — The centrodorsal is discoidal, irregularly circular in out- 

 line, broad, flat and very thin, 5 mm. in diameter; the cirri are arranged 

 in a single irregular and unequally developed marginal row. 



The cirri are XIII+, 17, rather slender, 10 mm. to 11 mm. long; 

 the first segment is very short, the second twice as broad as long, the 



