CATALOG OF THE FOSSIL FISHES IN THE CARNEGIE MUSEUM. 411 



Genus Caturus Agassiz. 



30. Caturus furcatus Agassiz. (Plate LIX, fig. 3; Plate LX, fig. 2; 



Plate LXI, figs. 4 and 5; Plate LXVIII, fig. 1; Plate LXXII, 



fig. 3; Plate LXXXIII, fig. 3.) 



(For synonymy cf. A. S. Woodward, Cat. Foss. Fishes Brit. Mus., Pt. Ill, p. 332.) 



This, the typical species, is of common occurrence in the Lithographic Lime- 

 stone of Bavaria and the Department of Ain, France; and, owing to its abundance 

 and favorable state of preservation, nearly all details of its skeletal organization 

 are accurately known. An excellent restoration is given by Dr. A. S. Woodward 

 in his Catalog, Pt. Ill, p. 331, fig. 36. A view of the underside of the head of a 

 specimen (No. 4451) is given on Plate LXVIII, fig. 7. 



In the opinion of Dr. A. S. Woodward, various small forms of Caturus, which 

 have been described under different specific titles, are to be regarded as immature 

 examples of the type species, C. furcatus. As shown by comparison of a large 

 series of specimens, the latter is.no doubt represented in the Lithographic Stone 

 by several well-marked varieties, which appear, nevertheless, to grade into one 

 another, and for that reason can scarcely be separated into species clearly dis- 

 tinguishable from the type. It is more expedient, therefore, to group them all 

 under one head, in which case the trivial names C. macrurus, microchirus, obovatus, 

 ferox, and gracilis become synonyms of C. caturus. From the large suite of material 

 belonging to the Carnegie Museum several well-preserved examples have been 

 chosen for illustration in the present Memoir, among them one of the small varieties 

 which was named by Agassiz C. macrurus. This is shown in Plate LXI, fig. 4. 

 The remaining specimens in the collection are cataloged as follows: 696, 866, 871, 

 872, 4028, 4451, 4697, 4699, 4713, 4720, 4721, 4723, 4771, 4774, 4778, 4790, 4795, 

 4808, 4809, 4809a, 4859, 4861, 5013, 5014, 5020, 5049, 5053. 



31. Caturus pachyurus Agassiz. (Plate LIX, fig. 1.) 



(For synonj'my cj. A. 8. Woodward, Cat. Foss. Fishes Brit. Mus., Pt. Ill, pp. 

 336-7.) 

 This is a much rarer form than the tyjie species of Caturus, and is represented 

 in the collections of the Carnegie Museum by a single well-preserved specimen, 

 which bears the catalog number 4724, and is shown on Plate LIX. 



