REPORT ON THE SIPHONOPHOR^E. 229 



the female (figs. 15, 16), subcylindrical in the male (fig. 17) ; the four radial canals are 

 connected at the ostium by a ring-canal. The ovate manubrium of the gynophores 

 (fig. 15) includes a single large ovum only, surrounded by an irregular network of anasto- 

 mosing spadicine canals (fig. 16, cy, compare p. 195). The cylindrical manubrium of the 

 androphores (fig. 17, hm) is very large, purple, prominent from the narrow ostium of 

 the umbrella, and contains a simple axial canal or central spadix. 



Genus 45. Anthemodes, 1 Haeckel, 1869. 

 Anthemodes, Hkl., Ueber Arbeitstheilung, &c, 38, p. 140. 



Definition. — Agalmidaa with a long and movable siphosome, the trunk of which is 

 very contractile ; bracts with large intervals. Cormidia ordinate, with free internodes ; 

 palpons and gonostyles on the nodes. Tentilla with a simple terminal filament. 



The genus Anthemodes was founded by me in 1869 for two different Atlantic 

 Agalmids which I had observed in the winter of 1866-67 during my residence in the 

 Canary Islands. One of these, figured as Anthemodes canariensis (38, Taf. i.) has 

 loose cormidia and belongs to Cupidita (Genus 47b). The second species, described 

 here as Anthemodes ordinate/,, and figured in Pis. XIV. and XV., has ordinate cormidia, 

 with free internodes, and may be retained as the true type of this genus. Fragments of 

 a similar species, Anthemodes articulata, have been found in a bottle in the Challenger 

 collection from the South Atlantic (Station 325) ; it seems to differ from the former 

 mainly in the thin fobaceous shape of the triangular bracts and the broader form of the 

 nectophores. The cormidia in Anthemodes are as regularly ordinate as in Stephanomia, 

 from which it differs mainly in the prolonged and very movable stem of the contractfle 

 (not rigid) siphosome. 



Anthemodes ordinata, n. sp. (Pis. XIV., XV.). 



Habitat. — North Atlantic, Canary Islands (Lanzerote), January 25, 1867 (Haeckel). 



Nectosome (PL XIV. figs. 1-4). — The swimming apparatus was composed in the 

 only specimen observed of a small pyriform pneumatophore at the top of the tubular 

 trunk, and of eight nectophores disposed alternately in two opposite rows. Between 

 the uppermost nectophore and the base of the pneumatophore were visible a few buds 

 of young and undeveloped nectophores. Fig. 1 exhibits the nectosome from the lateral 

 and fig. 2 from the dorsal side. The swimming movements of this most elegant 

 Agalmid are very rapid. 



Pneumatophore. — The float filled with air at the apex of the trunk is very small, 

 pyriform ; its pointed apex bears an octoradiate pigment-spot, composed of red-brown 



1 Anthemodes = Flower-shaped, xudtpuly;. 



