Agelacrinidae and Lepadocystinae 
461 
stellate^ probably owing to the retention of only the stronger, 
central ones among the parallel lines characterizing the type of 
the species. The character of this stellate ornamentation is 
indicated in the following analysis of the plate system. 
The stellate lines radiate from the center of the plates to their 
outlines, chiefly to the middle of the sides, but, in part, also to 
some of the angles of these plates. This stellate ornamentation 
appears to be characteristic of small sized specimens and may indi- 
cate the presence of a distinct variety of this species. For the 
present it is regarded merely as indicating immaturity. 
The most interesting feature of this smaller specimen is the 
excellent preservation of the surface and of the outline of those 
plates which, in the type of Lepadocystis moorei, were scarcely 
decipherable. The pectinirhomb on plates 11-17 is well pre- 
served, although distinctly smaller than those on plates 1-5, 
Fig. 4. Diagram of Lepadocystis moorei. The natural size of the specimen is 
indicated by an outline drawing at the right of the diagram. Museum of Earlham 
College, Richmond, Indiana. 
10-15, 12-18, and 14-15. The anal area is surrounded by plates 
7, 8, 13, and 14, excluding 19 from any contact with this area. 
The plates of the anal area are arranged in two circles, of which 
the outer circle consists of small polygonal plates. Only a part 
of these plates, those forming the lower and lower right hand part 
of the outer circle, are exposed. The smaller plates, completing 
the remainder of the circle, where it is narrower, are not seen. 
The central circle consists of more triangular plates, evidently 
meeting at the center in the form of a prominent cone, but, owing 
to the strong inclination of this cone toward the oral end of the 
specimen, only three of these triangular plates are well exposed, and 
the total number can not be determined. In other specimens they 
are not as narrow as here indicated. The outlines of plates 20 
to 24 cannot be distinguished with certainty. 
