

■ >ni.i with a well-marked a\is, which is jointed, i. e., consisting "l alternating 

 a hard calcareous and a snh horny substanci [*he hard joints (internodes consist 

 with but .1 tracé of horny substance: th<- soft joints nodes 

 formed of ' dcareous spicules in a mesh of horny substance". 



K •. . ..• - .i more extended definition, which maj be translated ;is follows: 



..Di.i with an evident a.\is sometimes traversed bj endodermal canals and consisting 

 and hard (internodes) joints. The hard joints consist of complety fused calcareous 

 spicules, and the soft joints consist of rod-like smooth spicules immersed in a horny matêrial. 

 branching is dichotomous, usually from the nodes, and the colony is usually flabellate. The 

 are borne in calyces arranged either in the lateral borders or one side of the bram 

 The polyp spicules are spindles or clubs, the cortex spicules are in part "Blattkeulen". 

 1'his definition is acceptable for the purpose of the present work. 



This same writer (Kükenthal, [908) furnishes an excellent kev to the genera of the 

 family Melitodidae. This is so well devised that the following translation is otïered, the new 

 is Birotulata being added : 



1. Polyps with exserted calyces. 



A. Branchings trom the nodes, only the terminal twigs sometimes from 



the internodes. 



1. Cortex spicules spindles or thorny clubs. 



</. Nodes and internodes traversed by water-vascular canals. 



Polyps ordinarily placed on one side of the branches . . Melitodes Verrill. 



(>. Water-vascular canals not in the internodes. 



Polyps distant and biserially placed Acabaria Gray. 



2. Cortex spicules foliaceous clubs Mopsella Cray. 



l'he foliaceous clubs are nodular in form Wrightella Gray. 



4. Cortex spicules doublé wheels Birotulata Nutting. 



B. Branchings from the internodes only Parisis Verrill. 



2. Polyps with inserted calyces (Clathraria) Gray. 



Synoptic view of the genera and species of Melitodidae 

 collected by the Siboga Expedition. 



New genus anl species are indicated by an asterisk 



Wrightella. 

 //'. coccinea, II', tongamsis. 



Melitodes. 

 .1/. ochracea, M. flaöellum, .1/. vqriaöilis, 

 .1/. esperi M. *squamata y M. *tnodesta. 



Acabaria. Parisis. 



.1 philippinensi A. tennis. .1 formosa, ,, ,- ,■ ,, ■ 



11 J I . fruheosa, 1 . minor. 



. I . triangulata. 



Mopseida. Birotulata. 



.1/ \1 ':i.(\ri. M. *spongiosa, B. 'i/iinor. 



