704 ZOOPHYTES. 



1 * 



Plate 60, fig. 3 ; corallum, natural size; 3 a, extremity of a branch, 

 magnified. 



East Indies and Pacific. Paumotu Archipelago. Exp. Exp. 



The specimens of this and the following species were collected by 

 J. P. Couthouy. 



Millepora violacea, Pallas, Zooph., 258. , Schweig., Beob., tab. 6, fig. 61. 



, Gmel. Linn., 3785. Distichopora violacea, Lamk., ii. 305. 



, Ellis and Solander, 140, lab. 26, , Schweig., Handb., 413. 



figs. 3, 4. , Lamour., Exp., 46, pi. 26, figs. 3, 4. 



, Oken, Zool., i., 63. , Blainv., Man., 416, pi. 55, fig. 2. 



2. DISTICHOPORA GRACILIS. (Dana.} 

 D. rubida; gracittor, ramulosa; ramulis tripk angustior (apice '"). 



Reddish; more slender than the violacea, ramulous; branchlets one- 

 third as broad, at summit about a third of a line. 



Plate 60, fig. 4, corallum, natural size ; fig. 5, a variety ? natural 

 size; 5 a, 5 b, views, enlarged. 



Paumotu Archipelago. Exp. Exp. 



The delicate corallum is about an inch high. 



NOTE. Michelin has instituted the genus LAMINOPORA, for a recent species, which is 

 near the Distichoporoe in structure, though somewhat different in habit. His figure re- 

 presents a small branch, compressed, and nearly in a plane, with the surface covered with 

 contorted laminate branchlets, one to three lines in breadth; and in the enlarged view the 

 edges of these plates have two series of pores. Michelin describes the specimen as having 

 pores on the lateral surface, but adds that they become filled and obliterated by age, so 

 that they are only distinguishable along the margin. The specimen was three inches high, 

 and the branches one and a half to nearly three lines wide. It approaches, a little, in 

 habit, the Apsendesia of Lamouroux. No locality is given. 



Laminopora contorta, Michelin, Guer. Mag. de Zool., 1842, pi. 3. 



GENUS ORBULITES. LAMARCK. 



Liber OR; orbiculatc disc/formes, supra infrnque planiusculce, super f tie 

 utraque leviter porulosa. 



