130 
Koenen. These two elongate and pyramidal species are comparable to our 
M. kindlei, and associated with them are two species of rotund contour, 
M. benedeni and M. mespiliformis, both similarly asymmetric, which are 
of a type represented by our M. whittakeri and M. mackenzie. The oblique 
form of the calyx in the Belgian species is better shown in specimens from 
the type locality, which I owe to the generosity of M. le Professeur Dewal- 
que, than in the figures. 
Melocrinus kindlei n. sp. 
Plate XXIV, figures 1-9 
A large-sized species. Calyx elongate, inverted pyramidal, varying 
in height from 14 to 38 mm. of which the height of dorsal cup to tegmen 
is about as 8 to 1, and the width of calyx at the arm bases is to the total 
height about as 1 to 1*2; it stands oblique to the stem axis from 5 to 15 
degrees. Plates of dorsal cup unequal in the same ranges, especially 
the basals, which may be twice as high on one side as on the opposite; 
the measured distance from base to apex of first auxiliary on one side 
may be a fourth greater than that on the opposite ray. Plates more or 
less convex, with a tendency to pitting at the angles, stronger in younger 
specimens than in the more mature. Obscure stellate ornament sometimes 
accompanies the pitting. The base is narrow, protuberant, cylindrical, 
and conspicuous by reason of its unequal projection, and the angle which 
it forms with the parts above it. This deflexion follows no fixed rule, 
although tiie bending seems to be most frequent toward the posterior 
side. Column facet large, occupying almost the full width of the base. 
The large basal is either in the anterior or left anterior position, more 
frequently the latter; and, as in other species, is distinguishable not only 
by its size, but by the fact that it supports a ray directly over its median 
line, instead of supporting it in part at either side like the other three. 
Tegmen low convex, about one-eighth the height of the dorsal cup; 
composed of numerous smooth plates of moderate size, with a subcentral 
anal opening, which may have been extended into a short tube. Below 
the arm bases the anal area is but little differentiated. The rays at the 
zone of the arm bases are more or less protuberant, giving to the calyx, 
as seen from above or below, a pentagonal outline. A few ossicles of the 
doubled rami which compose the free ray are seen in several specimens. 
The species may be compared with M. konincki Dewalque in Fraipont, 
which has a similar cylindrical, protuberant base, but differs greatly in its 
convex sides, and sharp surface ornament; and with M. dewalquei von 
Koenen, which has a similar pyramidal contour, but is smaller, has a less 
conspicuous base, and smoother surface. 
The description is made upon the evidence of seventeen specimens, 
of which an average representative is about 22 mm. high by 18 mm. wide 
at the arm bases, and 7 mm. wide at the column facet. The original 
of figures 1, 2, and 3 is of disproportionate size, probably exceptional; 
it has all the appearance of a very mature individual, in which the obliquity 
of the calyx is strongly accentuated, although it is well shown in most 
of the specimens. 
