266 PALj^ONTOLOGY OF NEW YORK. 



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

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

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

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

 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 genus. In 1845 de Verneuil described from the middle and lower 

 Carboniferous limestone of Russia, Or this eximia,\ and O. Olivier ana, both 

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

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

 costse, a type of surface ornamentation otherwise unrepresented in this group. 

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

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

 Francis Garnier. 



* Ives' Report Colorado River of the West, p. 126. 



t According- to db Vbrnedil this is the Productus exwiitis of von Eichwald, and the Choristites Wal- 

 cotti of Fischer db Waldheim. 



X Sur quelques Fossiles Paleozoiques de Chine, op. cit. 



