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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 83 



Ilarione, Italy, the main differences between the two being the wider 

 valleys, equal septa, and knoblike fused inner ends of the septa on 

 either side of the columella in the Eocene form; but it is probably 

 more closely related to Z. reticulata (Goldfuss) from the Maastrich- 

 tian of St. Petersburg, as it has been recently described and figured 

 by Umbgrove (1925, pp. 107, 108). In this species the valleys are 

 about 1 mm in width, with the same width for the collines, and the 

 septa number 70 to 100 to the centimeter. L. konincki Milne Ed- 

 wards and Haime and L. dellcatula Reuss from the European Seno- 

 nian are both separated from the Jamaican species by the lack of 

 costate grooves between the walls. 



Family AGARICIIDAE Verrill 



Genus TROCHOSERIS Milne Edwards and Haime, 1849 



TROCHOSERIS CATADUPENSIS Vaughan 



Plate 2, Figures 9, 10 



Trochoseris catadupensis Vaughan, 1890, p. 242, pi. 39, figs. 5, 6; 1919, pp. 194, 



426.— Felix, 1925, p. 120. 

 fTrochosmilia lulli Vaughan, 1899, p. 233, pi. 36, figs. 1-4. 



Occurrence. — Specimen 1 comes from the limestone near Cata- 

 dupa ; specimen 2, which possesses two calices, the result of budding, 

 is from a locality near Catadupa; specimen 3 is from a shale that 

 underlies the rudistid limestone and that is the equivalent of the 

 Providence shales near Port Antonio, in the railway cut between 

 Cambridge and Catadupa (Trechmann collection). Vaughan's type 

 specimen came from near Catadupa. 



Remarks. — Five specimens from the Trechmann collection are re- 

 ferred to this species. Three of them, mentioned above, fit Vaughan's 

 description very well. Their measurements are as follows: 



Notes on other specimens. — Two other specimens that almost cer- 

 tainly belong to this species are much larger and more mature forms. 

 The following is a description of the better-preserved specimen : 



