Mr. Brjce Wright on new Species of Corals. 75 



tubuli or canals are thicker than towards the extremities, 

 and the enclosed coenosarc is much denser, and opaque. The 

 broken stems from which the sections were cut, exhibit 

 immediatelj around the pores a dense white opaque body ; and 

 thence to the outside of the branch the peculiar colour of 

 the coral obtains. These colours disappear in the microsco- 

 pical sections. 



HYDROIDEA. 



Section Hydrocoeallin^, Moselej. 



Fam. Stylasteridse, Lamarck. 



Genus DiSTlCHOPORA, Lamarck. 



Disticliopora Brasseyij nov. sp. 

 (PL II. fig. 1, PL IV. figs. 3, 4, 4*, 4**.) 



Coenosteum a deep red, tinted or slightly mottled with 

 orange at the extremities of the stems and adult branches, 

 paling ofif into white and pale orange-yellow, basal portion of 

 coral moderately solid ; branches long and erect, slightly tortu- 

 ous, not so curved or foliaceous as in most of the other species 

 rounded but slightly compressed in the plane of the llabellum 

 termination of main branches bilobed and occasionally trilobed 

 lateral branchlets not frondose; but chiefly elongate and 

 obtusely pointed or clavate, moderately distant from each 

 other ] main stems closely set together. Surface of coenosteum 

 very minutely and tortuously canaliculated, as in the vertical 

 section. The pore-rows in this and the transverse section ex- 

 hibit the gastropores rather irregularly spaced and outlinv.d,v,'ith 

 the dactylopores slightly intermixed. Pore-rows sinuated 

 very inequilaterally on each side of the flabellum. Stellate 

 prominences or ampullas (vermes stelliformes, Lamarch) 

 abundant on the front and sides of branches, largely deve- 

 loped, hollow, and finely pustulated and prominent. These 

 ampulla are of late growth, when the organism was tally 

 developed, since, while frequently occurring in proximity to 

 the poriferous lines, they are never or very rarely intersected 

 by them. Fig. 4**, PL IV., illustrates this very well, showing 

 two separate ampulla with the poral line running between. 

 The back of the coral is free from this arrangement. The 

 figures in Plate IV. represent a frond of this species reduced 

 to ^, to illustrate the form of branches as compared Avith those 

 of i^. Allnutti ^w^\. D, coccinea, both figured natural size. 



Height of specimen 16 inches, width 20) inches. 

 Hah. Gilbert Islands. 



G* 



