NO. 1194. TWO NEW TVBBINOLID CORALS— VAUGMAN. 201 



LEVIPALIFER ORIENTALIS, new species. 

 (Plate XVT, fij>s. 3-7.) 



Corallum, without any sign of attacbment, subdiscoid in forir., the 

 base poiuted. Trausverse outline of the caiice circular. 



Dimensions. — Diameter, 20 mm.; altitude, 9 mm. 



Costte well developed, thin, distant, correspond to all septa; those of 

 the first and second cycles of the same size; those of the third slightly 

 smaller, and those of the fourth still smaller. They are rather tall at 

 the calicular edge of the wall, becoming- lower as the base is approached. 

 Two cycles are continued to the apex of the base. The costal margins 

 are beset with rather tall, rounded or blunt dentations. In some 

 instances the ends of the dentations are swollen. Each dentation 

 marks the emergence on the surface of a small ridge (or stria) along 

 which are arranged rather tall but not very sharj) i^ointed granulations. 

 The lateral faces of the costne are i^erpendicular to the corallum wall; 

 that is, the costte show no, or almost no, thickening at the wall. 



There are four complete cycles of septa, arranged in six definite sys- 

 tems. Six of the septa stand isolated from the other septa and extend 

 directly to the columella. Between each i^air of these six is a definite 

 group of septa belonging to higher cycles. Those of the third cycle 

 bend toward those of the second, and the members of the fourth bend 

 toward those of the third. Quite frequently the members of the fourth 

 cycle are longer than the inclosed members of the third. The longer 

 member of the fourth cycle for any given half system is the one stand- 

 ing next to the septum of the first cycle. This arrangement is the 

 common one in the Eupsammidfe. The fusion of the septa into the 

 groups above indicated is affected by the pali. The lateral ornamenta- 

 tion of the septa consists of ridges or stria;, which possess a line of 

 divergence slightly interior to the wall and parallel to it, and granula- 

 tions placed along the strige. Within the line of divergence the striae 

 bend toward the interior of the corallum, and exterior to it they bend 

 outward, ultimately downward. On the inner side of the line of diver- 

 gence the septal margin is entire or shows very faint crenatious. 

 Exterior to it each ridge is terminated by a dentation, not very 

 long just at the line of divergence, but quite soon the dentations are 

 larger. The dentations on the peripheral ends of the septa, that is, 

 the costse, have already been described. When one looks directly at 

 the edge of a septum the striae are seen to alternate in position, and 

 the septum is usually faintly undulate in a direction parallel to the 

 long axis of the strife. The granulations are placed along the striae 

 and are arranged in curves parallel to the septal margin. The granu- 

 lations are rather tall, but are not sharp-pointed; their tips are blunt 

 or rounded. The septal margins project considerably above the upper 

 edge of the wall ; the members of the first and second cycles are equally 

 prominent, and are more exsert than those of the third and fourth 



