Rav.mon'I) : Brachiopuda and Ostracoda of the Chazy. 247 



is shown not only Ijy the condition of the edge, but by other evidence. 

 In the first ph\ce, the median septum extends to the anterior margin, 

 a \er\- unusual condition in tlic Ortluds; secondly, tiie cardinal process 

 is about half as long as the shell, which is certainly not a normal 

 feature; and thirdK', only the posterior pair of adductor scars are 

 retained on this fragment. The accompaning text figure shows the 

 present condition of the shell, and the probable outline when complete. 

 This name had better be dropped, as it will be impossible to identify 

 an\- more nialerial with this t\pe. 



29. Orthis piger Billings. 

 Orlliis piger Billings, 1859. Canadian Naturalist and Geologist, Vol. IV, p. 442. 

 This species was never figured, and it appears that the type is not 

 to be found, so that it is not now possible to place the species in its 

 proper genus. 



Family CLITAMBONITID.^ Winchell and Schuchert. 



Genus Clitambonites Pander. 



30. Clitambonites multicostus (Hudson). 



(Plate XXX\'I, figures 10-14.) 

 Synlrophia muUicosta Hudson, 1905. Report of the New York State Paleontologist 

 for 1903, p. 285, PI. 5, figs. 8-15. 



Description. 



Shell similar in form to a typical Orthis, the brachial valve flat or 

 only slightly convex, the pedicle ^•al\•e pryamidal, with a high, fiat 

 cardinal area, which may be at right angles to the plane of the brachial 



Fig. 23. Clilamboniles multicostus Hudson. Exterior and interior of a large 

 specimen, showing spondyliuin. The deltidium is entirelj- removed. One-half 

 larger than natural size. 



valve, or tilted a little backward. The surface is marked by very 

 numerous fine stride which increase by bifurcation. 



