98 PROCEEDIiSrGS OF THE NATIONAL MUSEUM vol.83 



theca. Wall indistinct, perforate, and synapticulate. Septa nu- 

 merous, thin, imperforate, in five complete cycles and part of the 

 sixth, the fifth and sixth cycles often uniting, the rest free at their 

 inner ends, their upper margins with prominent dentations and their 

 sides granulate, united by numerous synapticulae. The septa of the 

 first two cycles are equal, more prominent than the rest in the calice, 

 their inner ends sometimes uniting in the center. 



Measurements. — The specimen measures : Height, 6.5 mm ; diam- 

 eters, 9.25 by 10.5 mm ; depth of calice, 3.25 mm. 



Specimen.— V.^.'^M. no. 44288. 



Occurrence. — In the Yellow limestone on the bridle trail near 

 Whitney Valley, \y^ miles from Peace River, Clarendon Parish, 

 Jamaica (Matley collection). 



Remarks. — The preceding is a description of a small coral occur- 

 ring with Eupsammia cla7'endo?iensis in the Peace River district and 

 of which there is one specimen in the Matley collection. It prob- 

 ably represents a new species, but owing to the lack of other and 

 more satisfactory specimens, it is not now named. It is distin- 

 guished from the other species of this genus occurring in the Eocene 

 of the West Indian region by its relatively broad, low shape and 

 deep calice; most of the species of the genus are taller, more cylin- 

 drical forms, except A. cyclolifes (Duncan) of the upper Eocene of 

 St. Bartholomew, which is much broader and flatter. A. antUlarum 

 (Duncan) approaches the Jamaican form but has a more compressed 

 corallum. 



Genus TROCHOSERIS Milne Edwards and Haime, 1849 



TROCHOSERIS (?) species 



Description. — Corallum simple, apparently free, with a broad, sub- 

 cylindrical, slightly convex base, becoming compressed and elliptical 

 in outline but not flaring outward near the calice. Wall apparent- 

 ly solid. Costae not preserved in the specimen. Calice superficial, 

 with a long, narrow, shallow f ossette. Septa, about 200 in number, 

 strongly exsert, imperforate, unequal, laterally granulate, upper 

 margins not preserved. The first four cycles are equal, much 

 thicker than the rest, and extending to the center. Those of the 

 fifth cycle also extend to the center. The remaining septa are thin 

 and extend one-third to two-thirds of the distance to the columella. 

 Columella thin, lamellate, spongy, papillate on top, not prominent 

 in the fossette. Synapticulae well developed, abundant. Endo- 

 thecal dissepiments developed in the vicinity of the wall. 



Measurements. — The specimen measures : Height, 34 mm ; basal 

 diameters, 40 by 45 mm ; calicular diameters, 30 by 59 mm. 



