266 PALjEONTOLOGY OF NEW YORK. 



the name Orthisina Missouriensis by Swallow, and it is probably identical with 

 0. occidentalis of the same author. Dr. Newberry has described* the species 

 Streptorhynchus pijramidalis, and S. occidentalis ; the former of these may be iden- 

 tical with Meekella striatocostata, though the original specimen appears to be ot 

 very large size and of rather more pronounced plication. Figures of the 

 original specimens of the latter species are given on Plate XI c, showing it to 

 be very distinct from M. striatocostata, and the largest known representative 

 of the eenus. In 1845 de Verneuil described from the middle and lower 

 Carboniferous limestone of Russia, Orthis eximia,j and O. Olivierana, both 

 of whicli unquestionably belong to Meekella, the former being of the type 

 of M. striatocostata, the latter an evenly striated shell without the radiating 

 cost£fi, a type of surface ornamentation otherwise unrepresented in this group. 

 Still another species has been described by Bayan,± M. Garnieri, from some 

 fossils collected in the valley of the Yangtsee-Kiang, China, by the late M. 

 Francis Garnier. 



* Ives' Repoi-t Colorado River of the West, p. 126. 



t According- to db Vernbdil this is the Productus exhii'ms of von Eichwald, and the Choristites Wal- 

 cotti of Fischer db Waldhbim. 



I Sur queliiues Fossiles Piileozoiqiies de Chine, op. cit. 



