PLATE CXVI A— Continued. 
CoRNULiTES MAJOR, BaiTaiidc. 
Fig. 14. An individual imbedded or adhei'ing to some foreign body for its entire length. 
The several figures under other names given by Barrande may be immatui-e stages of the same 
species. 
The following illustrations are given by Mr. Nicholson, in his paper on “ Ortonia, a 
New Genus of Fossil Tubicolar Annelides,” etc. Geol. Mag., vol. ix, p. 447. 1872 : 
ORTONIA CO NIC A. 
Page 23. 
Fig. 15. (Fig. 1—A.) Tubes of Ortonia coniea, Nich., growing upon the valve of iStrophomena alternata, 
natural size. 
Fig. 16. (Fig. B.) A single tube of the same, enlarged. 
The following illustrations are given by Mr. Nicholson, in his “Description of Two 
New Species of Fossil Tubicolar Annelides.” Geol. Mag., vol. x, pp. 54-57, pi. iv, 
figs. 2, 3. 1873 : 
CONCHICOLITES CORRUGATUS. 
Page 23. 
Fig. 17. (Fig. 2 a,*) [= fig. 3 on xdate]. “A group of the tubes of ConcJdcoUtes corrugatus, growing upon 
Plmrotoinaria bilix, natural size.” 
Fig. 18. (— b,) [= fig. 3a of x>late]. “A single tube of tfie same, enlarged.” 
ORTONIA MINOR. 
Page 24. 
Fig. 19. (Fig. 3—a,) [= 2a of plate]. “Tubes of Ortonia inino^', Nich., growing ujion a Strophomena, 
natural size.” 
Fig. 20. (—b,) [= 2a on j)late]. “One of the tubes, enlarged.” 
* The references to figures of x^late iv, Geol. Mag., ji. 57, are i-eversed in the exidanation. 
