274 The American Geologist. 
November, 1904. 
Melocrinus wittenbergensis, n. sp. 
Plate XVI. Fig. 27. 
The only specimen collected is small and injured on one 
side. The color is quite black. 
The four basals form a short neck. The first radials are 
a little wider than long-, and hexagonal. The second radials 
or first costals are wider than long and pentagonal. The 
second costals are wider than long, pentagonal and bifurcat- 
ing, supporting above a double series of two distichals each 
to the arm bases, or rather brachial rays. There is very lit- 
tle diftcrence in the size of any of these radial plates. There 
is a single heptagonal interdistichal plate. The lowest inter- 
brachial rests between the sloping upper edges of the radials 
and the lateral edges of the costals and is seven sided. Above 
this latter are two other interbrachials, somewhat smaller, or 
three interbrachials in all. 
The azygous side is injured so that no diagnosis can be made 
of the anal interradius. The plates of the ventral disk are 
quite large and each has a short central tubercle. The plates 
of the dorsal side have little convexity, the costals, under a 
magnifier, having the appearance of an ill defined central tu- 
bercle. 
The anal tube or opening is broken awav in the speci- 
men. There is a slight basal excavation for a rather strong- 
column. 
Delthyris limestone, a mile and a half helow Wittenberg, Mo. 
Troostocrinus? dubius Rowley. 
Plate XVI. Figs. 28. 29. 
This little blastoid was figured and described in the Feb- 
ruary, 1900, number of the American Geologist. (Plate 2, 
Figs. 36, 37, 38.) 
The three basal plates form a triangular, pyramidal cup. 
Hight and width about equal. The radial sutures apparent- 
ly extend to the top, as mi intcrradials are visible externally. 
The top of the anal interradial area projects somewhat above 
the tops of the other areas in some of the specimens. Ex- 
cept the anal opening and the central uncovered area, no oth- 
er openings are visible. 
The ambulacra are over a third of the length of the entire 
body and lie a little below the edges of the radial lips. The 
