22 



DE. P. H. CAEPENTEE ON CEETAIN POINTS 

 Fig. I. 



Diagram of the summit of Hcmicosmites fynformis. The course of the ambulacra, 

 which are superficial, is indicated by dotted lines. — r (11, 12, 14-17), 

 radial plates ; A, the anterior interradial ; i (13, 18), anterolateral inter- 

 radials ; G, H, n, i^eristomial plates (orals?). Copied from Miiller 

 (Abhandl. Berlin Akad. 18.53, Taf. vi. fig. o). 



Fig. II. 



Diagram of the summit of Caryocrinns ornatus, showing the relation of 

 the orals (o) to the plates of the dorsal cup (11-18), which are 

 lettered as in Fig. I. — b, anus. The dotted lines indicate the course 

 of the subtegminal ambulacra. From Mr. Wachsuiuth's specimen, 

 represented in Plate I. fig. 14. 



