Deep-sea and Shallow-water Hydrozoa. 19 



from bright red to light orange ; by its minutely granular 

 surface, becoming almost smooth at the basal parts ; by its 

 obsolete or very shallow lateral furrows, the partitions between 

 the gastropores being generally raised to the surrounding 

 surface ; by the unequal large gastropores ; by the minute 

 superficial dactylopores j and by the scattered or grouped raised 

 granulated ampullee, in which the pores communicating with 

 the central cavity are arranged in a circle around the base, 

 the septiform partitions between them passing off to the sur- 

 rounding coenenchyma or to neighbouring ampullse. 



Distichopora ochracea^ n. sp. (PI. I. fig. 2.) 



Coenosteum branching in a plane, of a dull ochre-yellow 

 colour, sometimes becoming white at the tips ; branches 

 thick, rounded, or slightly flattened; branchlets short and 

 rather thick, rounded, obtuse, expanded at the tips before 

 division takes place. Coenenchyma rather firm ; surface 

 minutely granular at the basal parts of the branchlets, 

 becoming more granulated at the extremities, with crowded, 

 very obtusely conical eminences, between which are scattered 

 pores. Cyclosystems regularly arranged in continuous, wide, 

 shallow lateral furrows. Gastropores irregularly placed, 

 unequal, but generally very large, circular or elongated trans- 

 versely, separated by very narrow partitions, which are often 

 raised to the general surface ; gastro-canal very crowdedly 

 papillose ; style very deeply placed, slender, and finely hirsute. 

 Dactylopores very unequal, some rather large, others very 

 minute, elongated transversely, the outer and lateral margins 

 scarcely or not at all raised, except at the extremities of the 

 branchlets, where the inner margin is continuous with the 

 rounded edge of the furrow, along which the dactylopores are 

 closely placed. Ampullas scattered or grouped^ consisting of 

 rounded eminences with slightly developed subradial ridges 

 on the central portion, surrounded at the base by a circle of 

 pored openings which communicate with the single central 

 cavity and which are separated by septiform partitions passing 

 ofi" to neighbouring ampullas or to the surrounding coenen- 

 chyma. 



Locality. Solomon Islands, 14 fath. B.M. 



This species is founded on a small piece of a coenosteum 

 which was dredged by H. B. Guppy, Esq., M.B., R.N., Sur- 

 geon to H.M.S. ' Lark,' and by him presented to the national 

 collection. It is very distinct from all known species of the 

 genus, being most closely related to the D. nitida, Verrill. 



2* 



