178 PROCEEDINGS OF THE ACADEMY OF 



A third specimen from the Toiyabe Range, on the Reese River, north-east of 

 Austin, consists of the isolated body of a vertebra, somewhat distorted, ground 

 oflFat one of the articular faces, and less infiltrated with the rocky matrix than 

 the others. It appears to have corresponded in proportions with those of the 

 series last noticed. It is biconcave, moderately concave at the sides., nearly 

 plane below, presents the remains of two short oblong articular processes for 

 ribs near the position of the neural arch, the sutural impressions of which are 

 visible above. The leugth has been about 8 lines, the breadth about 16 lines. 

 The neural canal about 2 lines wide. 



The very imperfect condition of the specimens renders me unable to say 

 more about them, nor is it certain that they all belong to the same animal, but 

 for the present I propose to consider them so, under the name of Cymbospon- 



DYLUS PISCOSUS. 



Of the remaining specimens, three consist of the greater portion of three 

 vertebral bodies, which belonged in series and have been broken apart. These 

 are labelled Humboldt, Nevada. They apparently indicate a much larger spe- 

 cies of the same genus as the former, the vertebral body having the same form. 

 The sides of the articular funnels are convex outwardly from the centre, which 

 deepen more rapidly at the inner third of the surface. One specimen retains 

 the neural arch without its spine, and a short, robust, costal process, extending 

 from near the bottom of the arch almost half the depth of the body. A second 

 vertebra is singularly distorted, apparently as if the bone had been in a plastic 

 condition. The measurements of these vertebrte, partially estimated, are as 

 follows : 



Length inferiorly 17 to 18 lines. 



Depth of body 44 " 



Breadth " 44 " 



Depth of costal process 21 " 



Projection of costal process 4 " 



For this species I propose the name of Cymbospondylus petrisus. 



Another specimen, consisting of a mutilated vertebral body from Star Cafion, 

 Humboldt County, indicates an Enaliosaurian, apparently not only differ- 

 ing from either of the former, but probably belonging to a different genus. The 

 specimen is broken away at the top and at one side, is also somewhat mutilated 

 on the opposite side, and appears considerably eroded on one articular face. 

 The body is deeply biconcave, as in Ichthyosaurus, but proportionately much 

 longer in relation with the breadth. The funnel-like surfaces are convex out- 

 wardly from the centre, and deepen more rapidly at the inner third. The sides 

 and under part of the body are slightly concave fore and aft, and defined by 

 acute borders. The under part exhibits a square depressed appearance from 

 the presence of four angular chevron processes, associated fore and aft by sub- 

 angular ridges. The estimated size of this specimen is as follows: Length of 

 the body inferiorly 2\ inches; depth 4J inches; breadth about-6 inches. 



For this animal I propose the name of Chonespondylus grandis. 



Notice of some VERTEBRATE REMAINS from the West Indian Islands. 

 BY JOSEPH LEIDY, M. D. 



Some time since Prof. Felipe Poey, of Havana, sent to me several fossils, to- 

 gether with a copy of a pamphlet entitled " De la Existencia de grandes Mami- 

 feros Fosiles en la Isla de Cuba. Par D. M. F. de Castro. Habana, 186.5." 



The fossils consist of the vertebra of a crocodile and part of a costal plate of 

 a turtle, which were found with other bones, together with the lower jaw of a 

 giant sloth, at Ciego-Montero, Cienfuegos, Cuba. 



The reptilian fossils are as follows : 



[June, 



