400 MEMOIRS OF THE CARNEGIE MUSEUM. 



7. Squatina speciosa H. von Meyer. (Plate LXVIII, fig. 3.) 



(For synonymy cf. A. S. Woodward, Cat. Foss. Fishes Brit. Mus., Pt. I, p. 67.) 



Several nearly perfect examples of this small ray are preserved in the Carnegie 

 Museum, the Museum of Comparative Zoology at Cambridge, Massachusetts, 

 and the British Museum. Those in the first-mentioned institution bear the catalog 

 numbers 4052, 4053 (in counterpart) and 4054. One of them is noteworthy for 

 displaying to excellent advantage, the contour of the body in the form of an im- 

 pression but no new details are added to our previous knowledge of the species. 



Family RHINOBATID^. 



"This family dates from the Upper Jurassic and is at present widely distrib- 

 uted, being represented by about five genera and twelve species. Most of these 

 are inhabitants of tropical and subtropical seas." Cf. Cambridge Natural History, 

 Fishes, p. 460. 



Genus Rhinobatus Klein. 



The nomenclature and synonymy of this genus, from which the family derives 

 its name, is discussed by Garman in his memoir on the Plagiostomia published in 

 1913. Variously written as Rhinobates, Rhinobatos, and Rhinobatus, the estab- 

 lishment of the genus under the last-named style is credited by Garman to J. T. 

 Klein, 1776, the type being fixed as Rata rhinobatos Linne, 1758. Most writers, 

 following Miiller & Henle, have ascribed the authorship of the genus to Bloch 

 (ed. Schneider, 1801). 



8. Rhinobatus bugesiacus (Thiolliere) . (Plate LXVI, fig. 2.) 



(For synonymy cf. A. S. Woodward, Cat. Foss. Fishes Brit. Mus., Pt. I, p. 78.) 



"Snout produced and acute, the two rostral ridges narrow, and separated by 

 a broad groove throughout their length. Cleft of mouth straight. Disk moder- 

 ately broad; length of pectoral fin nearly 2^/^ times its breadth at the point of 

 insertion. Skin covered with fine shagreen, without large tubercles or spines" 

 (A. S. Woodward, Cat. Foss. Fishes, Part I, p. 78). 



As first recognized by A. Smith Woodward, the type of the so-called Spatho- 

 batis mirabilis is only a large variety of this species. It is preserved in counter- 

 part, one of the halves belonging to the Paleontological Museum in Munich, and 

 the other to the Carnegie Museum (Cat. No. 5396).* This particular specimen is 



* Note by the Editor. — This specimen lias undergone and survived great dangers. One evening in 

 Brussels, when the writer was engaged in packing up the collection of Baron Bayet for shipment to 

 Pittsburgh, the hour being late, he gave orders that no more specimens should be brought down from 



