240 



BULLETIN OF THE 



Cryptolaria lonxjitlicca Allmax, 101 fins. 

 Sertularia distans Allman, 36 fms. 



*' complcxa sp. nov. 

 Sertularclla amphorifera Allman, 101 fs. 



" conica Allmax, 36 fms. 



Plumularia gracilis sp. nov. 

 Cladocarpus dolicotlieca Allmax, 339 fms. 



Cladocarpus tenuis sp. nov. 101 fms. 

 Aglaophcnia apocarpa Allman, 175 fms. 



" distaiis Allman, 539 fms. 



" rigida Allmax, 339 fms. 



'• gracilis Allmax, 37 fms. 



NematopJwrus grandis gen. et sp. nov. 

 339 fms. 



Pennaria symmetrica sp. nov. 



Plate I. Figs. 3, 3. 



Trophosome. — Hytlrocaulus three, sometimes four inches high, occurring in 

 dense clusters, which arise from a thick network of wiry, hydrorhizal fila- 

 ments ; deep black, becoming light horn-color at the tips ; tapering but 

 slightly towards the distal end, slightly zigzag, straight or very slightly curved ; 

 annulated at the base, and with a few, usually three, annulations just aljove the 

 origin of each branch. Branches short, alternate, and with the distichous ar- 

 rangement characteristic of the family ; annulated at the base, and at the distal 

 side of the origin of each ultimate ramulus. The ultimate ramuli all spring 

 from the upper sides of the branches, are annulated at the base, and increase in 

 size towards the distal end. Hydranths large, borne on the distal ends of the 

 ultimate ramuli and those of the main stem and branches, largest at the base, 

 tapering towards the mouth ; filiform tentacles fourteen to eighteen, tapering 

 but very little, if any, towards the distal end ; capitate tentacles very short and 

 about thirty in number. 



Gonosome. — Unknown. 



Locality. — Bahia Honda, Cuba. 



The specimens form a thick cluster of dark-colored stems, considerably over- 

 grown at the base and on the hydrorhiza with small sponges, ascidia, encrust- 

 ing forms of polyzoa and annelid-tubes. A great many particles of coarse sand 

 are by this means retained in the network of the hydrorhiza, thus indicating 

 the nature of the bottom on which the colonies lived. 



There is quite a close general resemblance between this form and the Pen- 

 naria gihbosa of L. Agassiz. But the zooids of this one have a symmetrical, 

 not a gibbous-shaped body ; the ultimate ramuli are annulated only at the 

 base, not throughout ; and the branches are not annulated at their distal ends. 

 Still another difference is found in the position or point of origin of the fili- 

 form tentacles. In P. gihbosa they arise from the extreme base of the hy- 

 dranth, while in the present form the point of origin is at some distance from 

 the base. 



Upon examining quite a large number of hydranths, I find that they vary in 

 one particular. In some of them the filiform tentacles terminate iix slightly, 

 but distinctly swollen tips, while in others this feature is entirely wanting. 

 Judging from alcoholic specimens, I am inclined to believe that this is due to 

 the state of contraction they were in at death. 



