52 BULLETIN 64, UNITED STATES NATIONAL MUSEUM. 



In the description of the E. ovalis I stated that small circular pits surrounded the 

 lower part of the body and that I considered them as the work of parasites. It is the 

 same with this species, most of the specimens are surrounded by these excavations 

 the largest of which have a diameter of four mil. met. If it is the work of parasites, 

 they must have taken hold of these animals when young because I found them on 

 very small specimens of this species. I found them on three species while all the other 

 species are free of them. 



Observations. — The circular pits mentioned by Troost are a con- 

 spicuous feature of the specimens, and they are probably due, as he 

 suggests, to the work of a parasite, but it is not known what organism 

 produced them. 



The differences between the specimen represented by figs. 2, 3, 4, 

 plate 13, and others referred to the species are mainly due to condi- 

 tions of preservation, and there seems to be no good reason for sep- 

 arating it as a variety. 



Eucalyptocrinus phillipsi has the general form of Eucalyptocrinus 

 crassus with straight sides and truncated base, but differs to a marked 

 degree in the character of the basal excavation. In E. phillipsi the 

 excavation is deep and sharply pentangular. 



The basals are long and narrow, occupying about one-third the 

 depth of the basal excavation. About one-half the length of the 

 radial is required to complete the cavity, at the margin of which the 

 radial bends abruptly upward at an angle of about 70° with its lower 

 half. Other plates of the calyx are arranged as in E. crassus. The 

 second secundibrach differs, in form from that of E. crassus in being 

 a quadrilateral plate with width about twice the height and the 

 upper edge forming a straight line. The plates are not preserved 

 above the first pair of tertibrachs. 



The surface is smooth. 



Column small and circular with pentalobate lumen. 



Formation and locality. — Brownsport limestone, Eucalyptocrinus 

 zone of the Beech River formation. Decatur County, Tennessee. 



Cat. Nos. 39963, 39964, 39965, 39966, U.S.N.M. 



EUCALYPTOCRINUS GOLDFUSSI Troost. 

 Plate 15, figs. 5, 6. 



Eucalyptocrinites gold/ussi Troost, Proc. Amer. Ass. Adv. Sci., II (read 1849) 



1850, p. 60 (nomen nudum); MSS., 1850. 

 Eucalyptocrinus gold/ussi Shumard, Trans. Acad. Sci. St. Louis, II, No. 2, 1866, 



p. 370 (catalogue name). — Wachsmuth and Springer, Rev. Palseocrinoidea, 



III, 1885, p. 128 (catalogue name). — Miller, North Amer. Geol. and Pal., 



1889, p. 244 (catalogue name). 



The following description is by Troost: 



The cup is almost hemispherical but more flattened at the base than any other of 

 the Tennessee species — in fact the whole of first series of costals [radials] and the 

 lower part of the second series together with the lower part of the large heptagonal 

 [decagonal] intercostal, contribute all to form the bottom of the cup, consequently 



