Narrative of Bahama Expedition. 85 



zoids inhabit smaller slit-like pores placed on either side along" 

 the edge of the two ridges. The specimens of this form 

 secured by us attain a height of about two inches. 



Two other species of this genus were found which attained 

 a considerable size. Both were profusely branching forms, 

 with the branches in the same plane. One, D. sii/cata (?), 

 had the edges cut by deep grooves, which were continuous 

 and included large pores, and ill-defined nodules scattered 

 rather freely over the broad surfaces of the branches. Color, 

 light buffy. The other species was characterized by very 

 shallow, discontinuous grooves along the edges, small pores, 

 comparatively smooth surface, and a white color. 



So far as we discovered, these deep-water Hydrocorallina' 

 did not possess stinging powers at all comparable with their 

 shallow-water relatives, which have an ur.icating effect hardh' 

 surpassed by any coelenterates which we encountered, with 

 the exception of certain Siphonophora. 



The Alc\'onaria were no less interesting than the hard 

 corals, and were in a better state of preservation, making 

 their approximate identification possible. The classification 

 used is the one adopted in the •• Challenger " Report on the 

 Alcyonaria.^ 



Two beautiful crimson species of Gorgonia were found, with 

 sub-fiabellate system of branches and slightly raised calicles. 

 The Chrysogorgidje were represented by species of the 

 genera Dasygorgia and C/n'ysogvrgia. The former does not 

 have the branches spirallv arranged, and the branches are 

 sparse and do not break up into branchlets, as is usual in this 

 genus. On the other hand, the calicles are long and at an 

 acute angle to the branch, and have the spicules arranged as 

 in the genus mentioned. The specimens of Chrysogorgia are 

 branched in an exceedingly profuse dendritic manner, giving' 

 an unusually delicate and pleasing appearance to the colony. 

 The calicles are much smaller than in the preceding species. 



1 It is surprising how greatly these magnificent Reports differ in tlie convenience 

 with which they maybe used by the general zoologist, the Report on the ^/0'o«(7Wrt 

 being particularly satisfactory in the synopsis of classification in the introduction. 

 which greatly enhances the utility of the work to the non-specialist. 



